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Old Mar 29, 2004, 03:38 PM
Purple power
gregg f's Avatar
shadow hills,ca
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Quote:
Originally posted by gregg f
Bob: i still have it............
your pm box is full!
e mail me your address and i'll send it out.
greggdeb@comcast.net
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Old Mar 29, 2004, 03:39 PM
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Ed Waldrep's Avatar
Las Vegas, NV
Joined Dec 1996
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Did Uncle Joe ever fly the converted panther on lipos? Nope, he did this conversion about two years ago I believe, before lipos became available. With my F-18 setup, I lost 8 oz going from 2600 nimh to 5s4P TP 8000 mah lipo. I estimated that adding gear to a midi sized airplane adds about 6 oz in weight total, but that may be too much to add, it depends on the airframe. Being able to ROG to me more than makes up for the weight gain, and not having to worry about bungee death roll is nice. Of course your field conditions may make ROG impossible but I'm lucky to have a paved runway. I think the F-18 would have no problem on really short cut grass though, and smooth dirt might be fine as well. I think it helps if the kit is designed with retracts in mind in the first place, but that's not very common with EDF kits.

Dang, now I want to get a Airworld Panther myself and put retracts in it... Well why not put a 350 dollar battery pack in a 440 dollar molded airplane?
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Old Mar 29, 2004, 04:39 PM
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St. Mary, Maryland, United States
Joined Dec 1996
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I believe the airworld kit is a Couger not a panther.

Adding 602's to a plane is a lot closer to a pound than 6 ounces. You gotta add the weight of retracts, struts, wheels, airtank, airvalve + servo, and the mounting structure and glue to keep it all attached to the airframe. I'm quite sure my El Bandito is a pound heavier all other things being equal. I did add flaps so take off about 2 ounces - + 14 ounces for the retracts.
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Old Mar 29, 2004, 04:54 PM
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Ed Waldrep's Avatar
Las Vegas, NV
Joined Dec 1996
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The EJF retracts are supposedly lighter than the springair 602s, but I don't know how much. I came up with my 6 oz figure a long time ago, I may be off and I may not have weighed everything. In the F-18 the bulkheads are there anyway so it doesn't take much extra structure to support them, but in another plane that might be different.

Yeah Chris you're right, Airworld Cougar, Aeronaut Panther. They need better advertising I guess!
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Old Mar 29, 2004, 05:39 PM
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I've made the same mistake myself - both blue navy jets
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Old Mar 29, 2004, 06:52 PM
shut up & fly
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United States, FL, Miami
Joined May 2001
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I think we all talked about the weight of retracts on planes a while back.

the gear including struts tires, tank valve, lines and servo add 12oz minimum to a plane. which is in general for a 90mm EDF 10-15+% of the total weight, which is the price we pay to rog.

I also think we said back then that this would limit the thrust to weight ration in an ROG EDF from 40% to 70% at best.

thank god for lipos!

now non rog EDF's can get over 1 to 1 and ROG EDFS can reach over 80% thrust to weight!

Ed the ejf retracts are a few grams lighter but most important they are shorter which is better for thin wings.

I still wonder if this plane would need a blow in door for take off?
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Old Mar 29, 2004, 07:05 PM
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Irvine, Calif USA
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As I said, I think it's a good candidate for lightweight retracts. Mine on 16GP's has enough thrust to disappear on a vertical right into the marine layer, so I don't think that a bit of extra weight would be too much of an issue ...
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Old Mar 29, 2004, 11:16 PM
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TGoodwin's Avatar
Las Vegas, NV
Joined Dec 2000
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The EJF retract are good and lower profile than the SprinAir 602's. They will take alot of abuse also. BUT You have to run two sets of air lines and a larger/heavier valve to operate them. I guess it just deppends on your application.

Ted
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Old Mar 31, 2004, 07:42 PM
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Hmm looks familiar ?



http://www.flugzeugforum.de/frames/p...ower_0204.html
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Old Mar 31, 2004, 11:52 PM
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RalleKnalle's Avatar
Germany
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in English...

http://www.jetpower-magazin.com/index.php?newlang=eng
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Old Apr 17, 2004, 07:41 PM
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Irvine, Calif USA
Joined Feb 1999
12,177 Posts
Twins at the field ...
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Old Apr 17, 2004, 10:03 PM
EDF Head
Haldor's Avatar
Stavanger, Norway
Joined Feb 2000
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Cute pair of twins they are..
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Old Apr 18, 2004, 01:52 AM
smug in granny panties
monkamarm2000's Avatar
NorCal Silicon Valley
Joined Aug 2002
11,779 Posts
Beautiful planes and pics Herb!


Barry
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Old Apr 19, 2004, 08:20 PM
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Irvine, Calif USA
Joined Feb 1999
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The one on the right is Gregg's, the title of the picture was "Waiting for Bob" (in the rain). Panther formation flying did not work out due to the weather ... maybe next time .

And now on to my next little project ...
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Old Apr 20, 2004, 03:03 AM
Nils_H
Paris, France
Joined Jul 2003
6 Posts
Herb,
that one is not yet available, right? Last time I spoke to Daniel S, he told me that it will only be on the market some time after Aspach, i.e. September. Or did you again manage to get a prototype???
Nils
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Old Apr 20, 2004, 04:01 AM
EDF Head
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Stavanger, Norway
Joined Feb 2000
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If DS is releasing a Hawk for 90mm fans I know where my allowance will go this year.....
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Old Apr 20, 2004, 04:12 PM
Nils_H
Paris, France
Joined Jul 2003
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Japp,
let's hope the economy is picking up. The price will be probably around €600 pushing it into the top end of the market where Axel Schreiner is with his F18 and the other goodies.
Anyway, let's hope our girls don't kill us later this year (or let's try not to tell them what we paid and quickly burn the receipt).
Nils
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Old Apr 21, 2004, 01:52 PM
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Irvine, Calif USA
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... It's not made by JePe - I believe he is working on a different set of projects...

The BAE Hawk is still in the early prototype stage.
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Old Apr 23, 2004, 12:28 PM
Nils_H
Paris, France
Joined Jul 2003
6 Posts
JePe? Who mentioned JePe?
The original was done by by Benni von Arx and Daniel Eichenberger in Switzerland and when they sought to get it into a kit they got in contact with DS.
Nils
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Old Apr 23, 2004, 02:00 PM
EDF Head
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Stavanger, Norway
Joined Feb 2000
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I mentioned JePe after a swift brain fade, corrected myself soon after
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Old May 07, 2004, 02:43 PM
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Herb's Avatar
Irvine, Calif USA
Joined Feb 1999
12,177 Posts
Here's a nice in-flight picture of Gregg's Panther taken at the MWE 2004 (picture courtesy of Shredair):

http://www.shredair.com/album/mwe/04mwe1.html

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Old May 07, 2004, 05:26 PM
Cogito Ergo Zoom
Parallax's Avatar
Calgary, Alberta
Joined Mar 2004
253 Posts
Sorry to veer of topic, but I have purchased an RD El Bandito/DS-51-FAN 3ph (non-retract version), and am looking seriously at the following:

-Hacker D50-12XL (B50 w/C50 slotted rotor - apparantly runs 5-10C cooler)
-Kontronics Newest JAZZ 55-10-32 (in 2 weeks Mike will have lower Li cut-off V, I chose this unit because of it's superior part throttle performance)
-up to 30 GP 3300's

ChHris has been kind enough to suggest parts of this, I would appreciate I/P from you folks. I have really enjoyed the info posted to date, the Dopplar info is very useful.

regards

Simon
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Old May 07, 2004, 05:30 PM
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Irvine, Calif USA
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http://www.rcgroups.com/forums/showt...hlight=Bandito
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Old May 07, 2004, 08:11 PM
EDF Jet Jam 2015, May 28-31st
Robert Belluomini's Avatar
United States, KY, Crestview Hills
Joined Dec 2000
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Quote:
Originally Posted by Herb
The one on the right is Gregg's, the title of the picture was "Waiting for Bob" (in the rain). Panther formation flying did not work out due to the weather ... maybe next time .

And now on to my next little project ...
OK, just a minute now. It rained all day on saturday in Costa Mesa. You guys actually flew that day? That is what I call a couple of die hards. I'll send you my cell# so we can get in touch next time. I'll be back at the end of May to see that formation flying in practice. Regarding the BAE Hawk. I spoke with Daniel a week or so ago and he said it would be October before he will have airframes ready to ship. They plan on producing about 3-4/month and they will be fairly expensive. Basically paint it, install the DS fan, radio gear and you are ready to fly. I plan on making it my winter project.
It designed for a high voltage set-up for Lipolys.
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Old May 07, 2004, 08:19 PM
Purple power
gregg f's Avatar
shadow hills,ca
Joined Apr 2000
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Quote:
Originally Posted by agustapower
OK, just a minute now. It rained all day on saturday in Costa Mesa. You guys actually flew that day? That is what I call a couple of die hards. I be back at the end of May to see that formation flying in practice. Regarding the BAE Hawk. I spoke with Daniel a week or so ago and he said it would be October before he will have airframes ready to ship. They plan on producing about 3-4/month and they will be fairly expensive. Basically paint it, install the DS fan, radio gear and you are ready to fly. I plan on making it my winter project.
It designed for a high voltage set-up for Lipolys.

HEHE
I think Herb flew his? But he had jeans on! My legs were too cold
We were waiting for you so we could escape and go have lunch and talk jets.
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Old May 08, 2004, 03:53 AM
EDF Head
Haldor's Avatar
Stavanger, Norway
Joined Feb 2000
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Here is a repost of my F9F Panther caught inflight.
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Old May 08, 2004, 07:49 AM
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Jim Phelps's Avatar
Elizabethtown/Ft. Knox, Kentucky, United States
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You guys are going to keep on until you make me buy one of these

They all look great!

Jim
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Old May 08, 2004, 01:02 PM
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Irvine, Calif USA
Joined Feb 1999
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Quote:
Originally Posted by agustapower
OK, just a minute now. It rained all day on saturday in Costa Mesa. You guys actually flew that day? That is what I call a couple of die hards. ...
Bob did you really believe a couple of raindrops would hold us back ?
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Old May 08, 2004, 05:15 PM
Cogito Ergo Zoom
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Calgary, Alberta
Joined Mar 2004
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http://www.rcgroups.com/forums/showt...hlight=Bandito[QUOTE]

Thank you Herb.
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Old May 18, 2004, 12:30 PM
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Irvine, Calif USA
Joined Feb 1999
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Interesting new all-carbon Panther prototype, takes off from the ground (with or without LG ), rather lightweight on 6S2P pack ...

http://www.rc-network.de/cgi-bin/bei...5;t=000363;p=3
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Old May 31, 2004, 01:40 PM
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Irvine, Calif USA
Joined Feb 1999
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Bob (Agustapower) came out at the field yesterday so he had a chance to
fly my Panther - I think he liked it !


Bob & Panther short video (5MB, use "save as" to download)

Only after about 4 mins of flying did I grab the video camera, so the video shows the last minute or so. I did set the camera down for the landing as well ...

.
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Old Jun 03, 2004, 08:50 AM
EDF Jet Jam 2015, May 28-31st
Robert Belluomini's Avatar
United States, KY, Crestview Hills
Joined Dec 2000
6,679 Posts
I sure did like flying the Panther!! This is a really solid handling model. I was really surprised when Herb handed me the transmitter. I just happen to have three 16 cell packs that would be right at home in this jet. Hmmm!!
Thanks again Herb.
Bob
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Old Jun 03, 2004, 09:09 AM
Team JR
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San Diego
Joined Feb 2002
1,824 Posts
Always liked 'Blue Tail Fly' myself.

-Doug
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Old Jun 03, 2004, 10:58 AM
Suspended Account
k_sonn's Avatar
Bellevue, WA
Joined Feb 2004
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I just received the Aeronaut Panther and I am looking for a set of instructions in English. Does anyone have a set they would like to part with or photo copy?

Thanks, Kirk
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Old Jun 03, 2004, 01:57 PM
Fight On!
mario alvarez's Avatar
San Salvador, El Salvador
Joined May 2001
605 Posts
I suppose a lot of you Panther drivers has either seen or flown Aeronaut's DH Vampire. Which is the better aircraft?
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Old Jun 03, 2004, 02:56 PM
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Elizabethtown/Ft. Knox, Kentucky, United States
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I haven't flown the Panther but I do have a Vampire and It flys great. I'm sure it's nothing like the Panther though

Jim
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Old Jun 03, 2004, 05:19 PM
Purple power
gregg f's Avatar
shadow hills,ca
Joined Apr 2000
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Quote:
Originally Posted by k_sonn
I just received the Aeronaut Panther and I am looking for a set of instructions in English. Does anyone have a set they would like to part with or photo copy?

Thanks, Kirk
Kirk:
I have them in a Word doc.
PM me your e mail and I'll send it to you.....gregg
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Old Jun 03, 2004, 05:26 PM
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Thanks Gregg. I sent you a PM.

Kirk
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Old Jun 03, 2004, 05:28 PM
Purple power
gregg f's Avatar
shadow hills,ca
Joined Apr 2000
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Quote:
Originally Posted by k_sonn
Thanks Gregg. I sent you a PM.

Kirk
On the way..........
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Old Jun 03, 2004, 05:38 PM
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Gregg, I received. Thanks a bunch.

Kirk
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Old Jun 04, 2004, 05:52 AM
EDF Head
Haldor's Avatar
Stavanger, Norway
Joined Feb 2000
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Quote:
Originally Posted by mario alvarez
I suppose a lot of you Panther drivers has either seen or flown Aeronaut's DH Vampire. Which is the better aircraft?
I cant imagine the Vampire to be anything but a very well behaved EDF as it has a nice big wing, probably better for those in their EDF infacy. The Panther is the "big brother"
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Old Jun 04, 2004, 05:25 PM
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Irvine, Calif USA
Joined Feb 1999
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Quote:
Originally Posted by mario alvarez
I suppose a lot of you Panther drivers has either seen or flown Aeronaut's DH Vampire. Which is the better aircraft?
I have never seen the Aeronaut Vampire fly, but I have read in the German forums that it flies quite well.

With these kind of scale planes, the issue is often "which one do you like better?". I am sure with the right setup the Vampire should tear up the sky just as well as my Panther .

Ralle's Vampire:
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Old Jun 05, 2004, 07:43 AM
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Elizabethtown/Ft. Knox, Kentucky, United States
Joined Jan 2001
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I have an old Aveox 1409/2Y and 14-CP2600 cells in mine and it does very well, probably not as fast as the Panther. With the large wing area it's a little hard to get down on a windy day, it wants to float "like a butterfly". I bungee launch and belly land but I think the EJF retracts could be installed easily.I've been very pleased with it.

Jim
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Old Jul 06, 2004, 01:03 PM
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Herb's Avatar
Irvine, Calif USA
Joined Feb 1999
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We experimented with some new hires video equipment yesterday ... three more videos (one more Panther, JePe F-16, JePe Reno Racer) to come...

panther video (4 mins, 640x480, 63 MB)

Gregg btw here's your Me-109E :

me-109 video (3 mins, 640x480, 41 MB)

Ooops panther link was to wrong video file ...
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Old Jul 06, 2004, 01:41 PM
Purple power
gregg f's Avatar
shadow hills,ca
Joined Apr 2000
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Nice to see the Me in the air again.........
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Old Jul 06, 2004, 02:15 PM
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demetrius's Avatar
Van Nuys
Joined Mar 2004
1,092 Posts
hello guys, i was wondering if i could get the same power performance that you guys are getting to power the panther with the astro-flights 825g by removing the gear and will this work? here are some of the specs.: model name - 025 geared, winding - 4t #17, rpm/v - 2230rpm/v, resistance - 0.033ohms, no-load current - 1200ma, rotor magnets - * Sm- cobalt, bearings ball - bearings, motor diam. - 1.35inches, motor length - 6.0, weight w/gear - 8.3oz., motor shaft - 5mm dia. control type - sensorless, control rating - 45amps, BEC rating - 1a at 5v., max nicads - 16cells, max lithium - 4cells, max amps - 45amps, max power - 750watts
Thanks guys!
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Old Jul 06, 2004, 02:45 PM
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Irvine, Calif USA
Joined Feb 1999
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Sorry I don't even know what an Astro 825g is ...

http://www.astroflight.com/e/env/000...Brushless.html

If it's a Hacker b50 sized motor then it will indeed work fine provided you have 800 Watts or so of power (depending on taste). I have a JePe fan, Hacker B50-18S & Hacker Master 77A controller in mine.

Mine flies on $64 16 x GP 3300's (I tried 20 at some point, 1050 Watts ) but Gregg flies his on LiPos and his Panther has a great climb due to the lower weight (about 8 oz less perhaps?, mine's 88 oz on 16 cells).

Is this the Astro motor you are talking about? I took this picture last fall ...
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Old Jul 06, 2004, 02:52 PM
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HUNTINGTON BEACH, CA, USA
Joined Feb 2000
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Me-109 (JG-26)

Gregg,

You can see the Me-109 found a good home......

Hmmm.... Should the next plane I build be also a Luftwaffe fighter ?

I was surprised you didn't come out for the 'plane' fireworks....


Phil
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Old Jul 06, 2004, 11:11 PM
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Irvine, Calif USA
Joined Feb 1999
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... fixed the link to the Panther video, it was pointing to the wrong video ...
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Old Jul 07, 2004, 04:09 AM
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demetrius's Avatar
Van Nuys
Joined Mar 2004
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Quote:
Originally Posted by Herb
Sorry I don't even know what an Astro 825g is ...

http://www.astroflight.com/e/env/000...Brushless.html

If it's a Hacker b50 sized motor then it will indeed work fine provided you have 800 Watts or so of power (depending on taste). I have a JePe fan, Hacker B50-18S & Hacker Master 77A controller in mine.

Mine flies on $64 16 x GP 3300's (I tried 20 at some point, 1050 Watts ) but Gregg flies his on LiPos and his Panther has a great climb due to the lower weight (about 8 oz less perhaps?, mine's 88 oz on 16 cells).

Is this the Astro motor you are talking about? I took this picture last fall ...


i think that's the one. i dont have it as of yet but i asked if they would provide me with a spec. sheet on something capable to the power a large ducted fan and they told me that this one should do the trick. However, i need more info. on this motor to make sure it's going to work with similar performance as the B50, megas. etc.
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Old Jul 07, 2004, 12:12 PM
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Germany, HE, Schauenburg
Joined Dec 1996
347 Posts
Quote:
Originally Posted by Herb
Interesting new all-carbon Panther prototype, takes off from the ground (with or without LG ), rather lightweight on 6S2P pack ...

http://www.rc-network.de/cgi-bin/bei...5;t=000363;p=3
Hi Herb,

I have done a take off without bungee last year with 14 cells RC2400 with my F9F Panther(1950g RTF) on grass. The fuselage has the perfect shape to start from grass without a undercarriage. It takes about 25 to 30m without wind.

Best Regards,

Ulf
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Old Jul 07, 2004, 02:16 PM
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Irvine, Calif USA
Joined Feb 1999
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Hello Ulf,

Will have to try that someday - we have some small stones here and there at our field ("California grass"), which need to be cleared first. Also you grass might be wet which helps . Maybe I'll let Gregg try that stunt first ...
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Old Jul 07, 2004, 02:20 PM
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Irvine, Calif USA
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Quote:
Originally Posted by demetrius
i think that's the one. i dont have it as of yet but i asked if they would provide me with a spec. sheet on something capable to the power a large ducted fan and they told me that this one should do the trick. However, i need more info. on this motor to make sure it's going to work with similar performance as the B50, megas. etc.
Back then I talked with AstroBob about that specific motor. It looks good, the magnets are SmCo as usual, but the windings of course will still short above 150-180 C. If you get a Kv in the 2000 range, it will be a good setup for the Panther (16 cells or 5S setup).
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Old Jul 07, 2004, 02:57 PM
Purple power
gregg f's Avatar
shadow hills,ca
Joined Apr 2000
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Quote:
Originally Posted by Herb
Hello Ulf,

Maybe I'll let Gregg try that stunt first ...
gee thanks

Actually, I wanted to try that in Visalia. I forgot though while having fun.........
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Old Jul 07, 2004, 03:08 PM
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Gregg's Stunt

Gregg,

I wanna see you do that stunt too with your lighter Lipos....


Phil
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Old Jul 07, 2004, 05:31 PM
EDF Head
Haldor's Avatar
Stavanger, Norway
Joined Feb 2000
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I've tried taxiing my Panther but I need to remove the hook first Maybe next time
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Old Jul 08, 2004, 02:03 AM
Registered User
demetrius's Avatar
Van Nuys
Joined Mar 2004
1,092 Posts
Quote:
Originally Posted by Herb
Back then I talked with AstroBob about that specific motor. It looks good, the magnets are SmCo as usual, but the windings of course will still short above 150-180 C. If you get a Kv in the 2000 range, it will be a good setup for the Panther (16 cells or 5S setup).

thanks Herb
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Old Jul 08, 2004, 01:54 PM
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Irvine, Calif USA
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Any idea what the Kv is on those motors? Any link to an info page?
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Old Jul 10, 2004, 04:54 AM
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Quote:
Originally Posted by Herb
Any idea what the Kv is on those motors? Any link to an info page?
Sorry Herb, i couldn't find the info on the website but i did scan in the documents that were sent me.
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Old Jul 10, 2004, 04:58 AM
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doc. #2
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Old Jul 10, 2004, 01:55 PM
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I guess it could work as the Kv is 2230. One problem I see often with motors designed for gearboxes is that the short stubby shaft is too short to fit in a fan.

I hope 750 Watts max power for the Astro is a conservative figure (my guess is that it is, apart from possible controller isssues), as that's about the minimum you need to fly the Panther without falling asleep at the sticks
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Old Jul 10, 2004, 04:34 PM
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I'm wondering what mega would be the best choice for the panther? for max speed? i'm thinking of mega 22/20/2 or 30/2. Also, im wondering how the 22/45/2 would work in this plane? It seems that all have a max rpm of about 44,000 but just vary in weight and amp draw.
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Old Jul 11, 2004, 01:35 PM
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Originally Posted by demetrius
I'm wondering what mega would be the best choice for the panther? for max speed? i'm thinking of mega 22/20/2 or 30/2...
Mega 22/30/2 on 16+ cells.
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Old Jul 11, 2004, 11:33 PM
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Some old & new videos (taken last weekend) :


new Panther video (wmv, high qual 720x480, 65 MB, 4 mins)

another new Panther video (wmv, 16 MB, 4 mins)

Bob having fun with the Panther video (wmv, 4 MB, 2 mins)

Gregg’s Panther maiden video (wmv, 15 MB, 4 mins)

old JePe F-16 video (wmv, 8 MB, 3 mins)

new JePe F-16 video (wmv, 13 MB, 3 mins)

old JePe Dago Red video (wmv, 10 MB, 4 mins)

new JePe Dago Red video (wmv, 8 MB, 2 mins)


" ... da bauen sie die tollsten Modelle und landen in der Wüste ... "

.
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Old Aug 10, 2004, 10:44 AM
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Em does any 1 mind sharing a close up on the landing gear on the panther?? Does it come with the kit or did u guys modify the aeronaut panther??

I just got a damaged one free from a friend at the field and i am thinking of putting landing gear on it

Thanks
ZY
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Old Aug 10, 2004, 03:14 PM
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Quote:
Originally Posted by YZYgold
Em does any 1 mind sharing a close up on the landing gear on the panther?? Does it come with the kit or did u guys modify the aeronaut panther??

I just got a damaged one free from a friend at the field and i am thinking of putting landing gear on it

Thanks
ZY
The kit does not come with landing gear. Nor is there any provisons for them from the factory.
I know one former Panther owner who installed retracts. He said if he had it to do over, he woundn't of done it.
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Old Aug 10, 2004, 04:00 PM
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Quote:
Originally Posted by gregg f
I know one former Panther owner who installed retracts. He said if he had it to do over, he woundn't of done it.
Yeah, but remember that he went over to the darkside later on!

Just kidding Joe!
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Old Aug 10, 2004, 08:47 PM
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Originally Posted by Ed Waldrep
Yeah, but remember that he went over to the darkside later on!

Just kidding Joe!
Good point Ed! Notice I didn't name names.
I think gear on the F9f simply disrupted the space time continuim. Thus turning good Mojo into bad Juju
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Old Aug 11, 2004, 04:35 AM
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But i saw quite a few pics here with panther's with landing gears
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Old Aug 11, 2004, 04:40 AM
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Quote:
Originally Posted by YZYgold
But i saw quite a few pics here with panther's with landing gears
You must be thinking of Herb's Panther thats equipped with static undercarriage only (removed before flight)
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Old Aug 11, 2004, 05:31 AM
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Oh dang :{
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Old Dec 13, 2004, 03:05 PM
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Quote:
Originally Posted by YZYgold
But i saw quite a few pics here with panther's with landing gears
My LG is for static display only, I know of only one person who installed retracts in it - and later took them out because he did not like (to put it mildly) the weight penalty. But it seems rather feasible.

If you built it light, the Panther will ROG without LG from grass, but you need a sturdy fan for that (eg Midi).

Mine has a 6S 2P Polyquest 6200 mAh pack in it and flies (actually I should say "could fly", because I never fly that long...) for as long as 10 mins:


.
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Old Dec 13, 2004, 04:57 PM
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Wow thanks so much for the pic
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Old Dec 13, 2004, 05:11 PM
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I might add that I have flown mine for 7mins and only recharged ~1200mAh, was using 20x FAUP's at the time.

Am now using 6S3P (2x 3S3P) Konion 1100mAh cells which are seen in the pic:
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Old Dec 14, 2004, 08:17 PM
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Here is the rx arial shown:
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Old Dec 15, 2004, 05:08 PM
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Quote:
Originally Posted by gregg f
... I think gear on the F9f simply disrupted the space time continuum.
Hah !! ... That's it, that's what it was, how come I did not think of it !!

Ulf Herder ROG' ing his Panther off grass (I believe at Aspach):


.
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Old Dec 15, 2004, 05:30 PM
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David Vo took this picture over lunchbreak today, Canon digital with big zoom lens, still a challenge to photograph


.
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Old Dec 21, 2004, 12:18 PM
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One of the "problems" with LiPos is that the flights get so long now that the motor (a Hacker B50 in the Panther's case) ends up getting sensibly warmer, even with reduced throttle usage ...

On the last flight I had the rotor come slowly unglued from the aluminum hub in the JePe fan (2002 model), it must be the effect of continuous heating propagating from the windings to the shaft and on to the hub, eventually weakening the epoxy ...

On the other hand the second generation 6S2P Polyquest 3100N pack seems to holds up well to high currents (12C), barely getting warm after 5 mins of flying, and showing as expected minimal voltage depression.
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Old Dec 25, 2004, 03:38 PM
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Rotor flew off the JePe fan
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Old Dec 25, 2004, 03:39 PM
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... but aluminum hub is still on Hacker B50 shaft ...
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Old Dec 25, 2004, 07:13 PM
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Omg ....
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Old Jan 17, 2005, 03:58 PM
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Flew the Panther on the new 6S Kokams 3200, four minute flight, 1150 Watts wot, ca. 74 oz auw, battery temp measured by Gregg after flight ca. 105 deg F

Weather today sunny, ca. 85 degrees, we do get spoiled ...
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Old Jan 17, 2005, 05:08 PM
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Absolutely gorgeous Herb, I really like the color scheme.
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Old Jan 17, 2005, 05:35 PM
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Looks great Herb.
Why don't you rub the weather thing in a little more . High today in central Kentucky was 21 and the low was 10. Tomorrow is going to be colder. A week ago we set a new record high of 69 (I think). Not much flying going on here .

Jim Phelps
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Old Jan 17, 2005, 07:46 PM
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Quote:
Originally Posted by Herb
Flew the Panther on the new 6S Kokams 3200, four minute flight, 1150 Watts wot, ca. 74 oz auw, battery temp measured by Gregg after flight ca. 105 deg F

Weather today sunny, ca. 85 degrees, we do get spoiled ...
Where are your floats? Or did the rain disappear too?
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Old Jan 17, 2005, 11:10 PM
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Floats ?? How did you find out about my floats ...

.
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Old Jan 18, 2005, 12:42 AM
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Quote:
Originally Posted by Herb
Floats ?? How did you know about my floats ...

.

Special inteligance told me. Is that the Costa Mesa HSS field?
At least it looks warm. This is the sort of water we're dealing with in Ohio.
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Old Feb 09, 2005, 08:20 PM
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Finally had a chance to fly twice the Aeronaut Panther with my third power setup ...

This is the original setup from a year ago, 16 x GP 3300 cells, about 800 Watts. The GP pack weighs about 36 oz . Flies nicely but boy does it not want to slow down ...

.
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Old Feb 09, 2005, 08:24 PM
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... then in November switched to a neatly stacked 6S 2P pack of the brand new PQ N3100SP Lipos (with taps).

Pack weight went down to 30 oz , and power (at full throttle) went up to 1100 Watts or so,


.
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Old Feb 09, 2005, 08:30 PM
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Three weeks ago I moved the PQ's out and into the JePe F-16 (they fit nicely there, without a need to remove the canopy), and installed a set of Kokams 3100HD in a 6S pack.

Power went up to 1200 Watts full throttle (the epoxy in JePe fan hub had melted wit the PQ pack, slowing me down for a week or so ) but pack weight went further down to 20 oz giving about 72 oz auw ...

On last flight last weekend, after a 4 min flight pulled 2.5 Ah out of the Kokams, with temp (as measured by my temp man Gregg) around 135 degrees (57 Celsius). Not bad
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Old Feb 10, 2005, 06:34 AM
Maj. Woody
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Hi. I'm building a Panther now. Yours looks fantastic. I will also be using a 6s battery configuration. What motor and fan are you using?

Dom
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Old Feb 10, 2005, 08:25 AM
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Herb, so you're saying the Kokam 6S1P (total 3100mAh) delivers higher voltage than the PQ 6S2P (total 6200mAh)? That's impressive, however the PQ 3100's are 3/4 the weight of the Kokams. I know the Kokam cells are the best around, but it's a shame they're so heavy for their capacity, even if it means they'll handle more abuse and live longer. What do you think about each brand? I get the feeling the Kokams may be better for EDF as they would be more likely to be abused by high current draws & poor cooling, something which the Kokams may handle better.

Stu.
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Old Feb 11, 2005, 12:18 AM
Tom Para
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Herb, I am about ready to maiden my Aeronaut Panther and had a question about bungee tension. Do you recall how many pounds of tension you use on this plane?
I also saw mention of you using a different rate of throw on the elevator and maybe the ailerons. Could you recommend the elevator and aileron throws you use and did you use differential throws on the ailerons?
Thanks
Tom
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Old Feb 11, 2005, 02:57 PM
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Tom,

Re Bungee tension, I use a 22 ft of 9mm od rubber stretched to ca. total of 40 paces (ie 40 paces from bungee release to spike). I think that's > 5 x model weight. As the Panther is built out of the mold straight as an arrow, some more pull won't hurt, it will still launch dead straight . At the same time it's an easy jet to bungee (relatively low wingloading).

Re the CG it's fine where the instructions say it should be. My towhook is just a bit ahead of the intakes. 1/2 root chord ahead of CG is probably where I placed it.

For the ailerons I just use what they suggest (or just eyball it ) and it works fine. A bit of aileron differential can't hurt. It's not too sensitive on the ailerons, as you would expect from the overall geometry.

Re the tail, there is a design error in the tail incidence of the Aeronaut Panther. Both Gregg and I fly it with about 1 mm of down trim. So set it up with a bit of down, and then be prepared to give it some more ...

Because the Panther is short coupled, it's unusually pitch sensitive. You need just a TINY bit of up and down to control it. Again both Gregg and I have similar up and down movement, maybe +- 2mm at most. So be prepared for it to be rather pitch sensitive. Maybe set up dual rates if you are comfortable with them? Also, check that you do not have any elevator binding in the linkages.

When you land it keep in mind it is low drag, so it will just keep on going ... be prepared for nice looong glides. If it's really windy, the tiptanks will make it bounce around a bit in flight.

Hope this helps, and good luck on the maiden. Once trimmed out it flies - and lands - like a trainer ... hwh


.
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Old Feb 11, 2005, 03:23 PM
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Regarding landing this slippery thing :

I use spoilerons (both ailerons up) to increase the aerodynamic washout of the wing allowing me to ge the nose up with reduced risk of tipstall. In this mode there is more drag and the decent become more controllable.
The ailerons go about 3/8" up, some downtrim is also mixed in to keep a level trim.
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Old Feb 12, 2005, 12:15 AM
Tom Para
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Thanks Herb and Haldor. I got the throws set per your advise and added some exponential. My bungee rubber is 1/2 inch dia with 1/8 walls. Its a hosemonster standard 25 foot'er. I'll set it to 25 lbs pull. I would of had a lot more evelator than you recommended had you not mentioned it. Thanks for the tip. Haldor I have used the UP Ailerons for airbrakes on my hotliner. I am going to program it in but may be too busy to remember to deploy them on the maiden flight. 3/8" up is a bunch. I was only going to set the up aileron throw @ 1/4 inch and down aileron @ 3/16 to start. By the way I am using a Kontronic 600 -17 running on a 6s2p 5200mah pack running a Midi fan with a Jeti controller. 820 watts on soft timing, about a kw on hard timing, AUW is 78oz. I hope to take some pics of it at the field tomorrow. Its yet another Blue Tail Fly paint scheme!
Thanks again.
Tom
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Old Feb 14, 2005, 12:46 PM
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So how did it go ...

I tried to ROG mine this weekend - but I think I have to remove the tow hook first because it digs into the grass
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Old Feb 14, 2005, 03:22 PM
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Originally Posted by Herb
So how did it go ...

I tried to ROG mine this weekend - but I think I have to remove the tow hook first because it digs into the grass
So are going to put the floats on for Friday

UPS just picked up the Red Rocket, It's insured.
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Old Feb 14, 2005, 03:48 PM
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Originally Posted by agustapower
So are going to put the floats on for Friday

UPS just picked up the Red Rocket, It's insured.
Bob:
Are you bringing the dolly? I might like to try it out with the F9F.
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Old Feb 14, 2005, 07:57 PM
Tom Para
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[QUOTE=Herb]So how did it go ...

We had great weather Saturday. We used Bob's twin strand bungee to launch. I was able to measure the tension @ 35 lbs of pull.
The Panther launched and headed skyward.

Hmmm... Herb was right about the elevator needs some down trim ( I had the recommended 1mm) .
On the downwind I gave it a bit of down elevator. The Panther pitched down sharply. Gave it up and it pitched up just as violently.

Hmmm... Herb was right about the elevator sensitivity. On the next pass the Panther all of a sudden pitched straight up and begins to stall, Bob asks "you got any control?"

Answer "NO!" The Panther then begins to level out again pretty much all by itself. I chopped power and was able to make a reasonably controlled landing without touching the elevator and no damage to the plane.

The 30 second flight which seemed to last an hour was over.

Apparently on launch the battery tray ripped loose and was sliding back and forth in the fuselage causing the Panther to behave in a most inappropriate manner.
Other than that, flys like a dream.
BuD
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