SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Apr 26, 2012, 02:54 AM
Carbon fiber is our friend
Steve C's Avatar
United States, CA, Lodi
Joined Feb 2001
4,230 Posts
Hello

I'm working on several speed planes tonight too. Trying to sort which motor will go in each one actually. I have collected quite a few motors and it sort of becomes a problem when there are too many choices!

I'd go with one of the rx's that can use a remote rx and have 3 antennas. It's not just Spektrum that doesn't like carbon, it's any 2.4 system. In any case, you have to be sure there's no way to blank out all antennas with the wing. It's tough with only 2 unless you orient them at a 45 degree angle. That's where the third one can really help out.

Good luck with it. I'll be watching for your flight report
Steve C is offline Find More Posts by Steve C
Reply With Quote
Sign up now
to remove ads between posts
Old Apr 26, 2012, 03:57 AM
"The Judge"
sebbe's Avatar
Sweden
Joined Feb 2006
5,817 Posts
Yepp. go for the installation with the antennas sticking out in rear of wing, in an angle..

There will always be a shade no matter how you put the antennas as the whole ship is in carbon.. And the wing will in some position be i the way depending how the plane is in the air.. Nothing you could do about it..
sebbe is offline Find More Posts by sebbe
Reply With Quote
Old Apr 26, 2012, 04:28 AM
310mph Kolibri T25 Swist
henke's Avatar
Sverige, Kronobergs Lšn, Ljungby
Joined Jan 2001
4,828 Posts
Quote:
Originally Posted by arcticflyer View Post
As far as the receiver is concerned it is a 6255 Spektrum Carbon Fiber Receiver. I run a DX7 radio.
I use the same, DSMX with a DX8

Quote:
Originally Posted by arcticflyer View Post
with the antenna's pointed at a 45 out the sides to the rear.
I do that too but behind the wing and strapped to small strakes making the antennas stay at 45degree even at warp speed.

My Swist got as much carbon as you can stuff in there, and due to the speed envelope I turn around pretty far away with no problems at all.



Photo quality is't the best but you get the idea


Another pic...
henke is offline Find More Posts by henke
Reply With Quote
Old Apr 26, 2012, 04:51 AM
"The Judge"
sebbe's Avatar
Sweden
Joined Feb 2006
5,817 Posts
So you are saying your antenna tips are laying side by side with solid carbon Henke ?
sebbe is offline Find More Posts by sebbe
Reply With Quote
Old Apr 26, 2012, 07:49 AM
310mph Kolibri T25 Swist
henke's Avatar
Sverige, Kronobergs Lšn, Ljungby
Joined Jan 2001
4,828 Posts
Quote:
Originally Posted by sebbe View Post
So you are saying your antenna tips are laying side by side with solid carbon Henke ?
No, forgot to say that the small strakes are fibreglass. All black is not gold
henke is offline Find More Posts by henke
Reply With Quote
Old Apr 26, 2012, 11:02 AM
Registered User
arcticflyer's Avatar
Canada, SK, Prince Albert
Joined Jan 2006
1,526 Posts
Thanks Guys - I will be making up something today...I bought these antenna wrappers from ICARE but they are kinda rubbery and I'm not sure what to attach them with.
arcticflyer is offline Find More Posts by arcticflyer
Reply With Quote
Old Apr 26, 2012, 11:04 AM
"The Judge"
sebbe's Avatar
Sweden
Joined Feb 2006
5,817 Posts
Quote:
Originally Posted by henke View Post
No, forgot to say that the small strakes are fibreglass. All black is not gold
Puuuh, thanks for that
sebbe is offline Find More Posts by sebbe
Reply With Quote
Old Apr 26, 2012, 11:46 AM
Livin it UP when Im goin DOWN
Arcteryxxx's Avatar
Norway, Telemark, Skien
Joined Feb 2010
4,380 Posts
I like these. Mounting with double sided tape.

http://www.mmglidertech.com/images/g.../whiskers1.jpg
Arcteryxxx is offline Find More Posts by Arcteryxxx
Reply With Quote
Old Apr 26, 2012, 12:35 PM
Yes..ok..maybe..lol.....
Tucson Avra Valley, Arizona, United States
Joined Jul 2004
5,729 Posts
Yes..................I use those same ones from mmglidertech.....................
shhhhh! is offline Find More Posts by shhhhh!
Reply With Quote
Old Apr 26, 2012, 02:45 PM
Carbon fiber is our friend
Steve C's Avatar
United States, CA, Lodi
Joined Feb 2001
4,230 Posts
I hope they don't use carbon powder to color the resin in those glass pieces.

Sebbe, you can cover just about every angle with 3 antennas. Two up front and one out the top of the tail boom. They show it in the video that comes with the ar9310.
Steve C is offline Find More Posts by Steve C
Reply With Quote
Old Apr 26, 2012, 03:04 PM
"The Judge"
sebbe's Avatar
Sweden
Joined Feb 2006
5,817 Posts
Quote:
Originally Posted by Steve C View Post
I hope they don't use carbon powder to color the resin in those glass pieces.

Sebbe, you can cover just about every angle with 3 antennas. Two up front and one out the top of the tail boom. They show it in the video that comes with the ar9310.
Steve, you are right, 3 antennas does it,,,,, 2 does not, but the longer the antennas are the better as you can separate them.. But you could never get 100% full strenght reception all the time from your reciiever either way, but a solid carbon wing in the way of the two antennas when 1km away in air, thats not very good..

Sebbe
sebbe is offline Find More Posts by sebbe
Reply With Quote
Old Apr 26, 2012, 10:02 PM
Registered User
arcticflyer's Avatar
Canada, SK, Prince Albert
Joined Jan 2006
1,526 Posts
Steve - how am I going to get three antenna's from a 6255 receiver...if you know a neat mod please tell.
I got a mod from JJmouris for the AR7000 which seperates the internal antenna from the reciever then with some careful solder work I have two remotes.
I'm calling Horizon tomorrow to ask them why they suggest that the antennas exit in front of the wing on an all carbon plane and everyone on here suggests behind the wing...believe me I trust you guys more!

Note: The 36mm Typhoon 650 is on the way from FanJets USA...as soon as it arrives I will post it up with some prop test data.
arcticflyer is offline Find More Posts by arcticflyer
Reply With Quote
Old Apr 26, 2012, 11:54 PM
Victim of C.D.O.
murdnunoc's Avatar
United States, TX, Lubbock
Joined Oct 2007
4,081 Posts
Hi Arcticflyer,
I know you ordered your motor yesterday, but here's some direct drive inrunner data that may be in the ballpark of something useful to you. Sorry to be late to the party

Mega 22/30/2E 1492kv 220 grams
6S 4400 65C
7x9 APC
128A
2508W
24,330 RPM for 230mph pitch speed
Motor at 83.3% of unloaded KV

Medusa 3670-880kv (978kv true) 340 grams
10S 4000 45C
7.4x7.5 Q40 prop
84A
2963W
28,536 RPM for 203mph pitch speed
Motor at 82.7% unloaded KV

Mega 22/60/1E
7S 4400 65C
7.4x8.1 Q40 prop
201.4A
4714W
29,407 RPM for 226mph pitch speed
Unknown %KV. But judging by temperature, it's around 90% of unloaded KV

I know they're not the exact props you're looking at, but if we can find a prop that pulls around the same watts for the same RPM as your 7x13, we can work from that. Power numbers can be extrapolated up or down from known data.
Peter mentioned maybe the 7.4x8.1 pulls around the same as the 7x13??
murdnunoc is offline Find More Posts by murdnunoc
Last edited by murdnunoc; Apr 27, 2012 at 12:05 AM.
Reply With Quote
Old Apr 27, 2012, 12:18 AM
Registered User
arcticflyer's Avatar
Canada, SK, Prince Albert
Joined Jan 2006
1,526 Posts
Murdo - I knew you'd show up! Good to hear from you. Yup...I ordered that bad boy yesterday and with some luck (Hopefully the customs TROLLS won't slow things down) it should be to me end of next week. Man I miss getting things super fast in the US.

Got the servos in the wing tonight and I just have to make up my mind where to put that pesky receiver and the little rabbit ears. Love Carbon...hate carbon and 2.4...

Interesting numbers...wonder what that motor would pull with my 7x13 folders. Yes that does shed some light...gotta love real data.

I have a plane coming that the big MEGA EDF motor will fit into
arcticflyer is offline Find More Posts by arcticflyer
Reply With Quote
Old Apr 27, 2012, 12:22 AM
Registered User
arcticflyer's Avatar
Canada, SK, Prince Albert
Joined Jan 2006
1,526 Posts
What is the KV on that Mega 22/60?

Forgot to ask...what ESC were you using?
arcticflyer is offline Find More Posts by arcticflyer
Last edited by arcticflyer; Apr 27, 2012 at 12:28 AM.
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Buying fast planes from .... sebbe High Performance 17 Apr 10, 2012 03:57 PM
Sold Pattern plane,Trainer planes Cheap!Need to move fast. radman615 Non R/C Items (FS/W) 5 Mar 03, 2012 06:16 PM
For Sale JEPE fast foam BIG F-18 HORNET pajlotmato Aircraft - Electric - Jets (FS/W) 2 Jan 30, 2012 04:40 PM
Discussion How fast can a Big Lama fly? Pretty fast! Owner1 Coaxial Helicopters 1 Aug 12, 2011 04:53 PM
Discussion Need some advice! I'm looking for a big fast plane! JoeyNC Fuel Plane Talk 6 Jun 09, 2010 04:26 AM