SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Jun 19, 2014, 11:54 PM
Registered User
Bay Area
Joined Feb 2004
1,994 Posts
Wow, thanks for the video Wobisch! I'm amazed your dolly tracks so straight until liftoff. What power configuration are you using?
RCDad is offline Find More Posts by RCDad
Reply With Quote
Sign up now
to remove ads between posts
Old Jun 20, 2014, 12:48 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
810 Posts
I'm using this motor with a 4000mAh 6S Lipo and 13x6,5 APC Propeller.
Weight of the Hornet is about 2600g. Dolly is from Teichner in Germany.

Model: NTM Prop Drive Series 50-50 580kv
Kv: 580rpm/v
Max current: 90A
Max Power: 2000W @ 22.2v (6S)
Shaft: 8mm
Weight: 347g
ESC: 100A
Cell count: 4s~6s Lipoly
Bolt holes: 30mm
Bolt thread: M4
Connection: 4mm Bullet-connector

Prop Test Data:
14x8 - 14.8V / 587W / 40.3A / 2.9kg thrust
14x8 - 18.5V / 1077W / 60.7A / 4.03kg thrust
14x8 - 22.2V / 1906W / 88.2A / 5.36kg thrust
15x8 - 14.8V / 626W / 43.6A / 3.3kg thrust
15x8 - 18.5V / 1165W / 64.2A / 4.85kg thrust
15x8 - 22.2V / 1961W / 88.8A / 6.15kg thrust
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Latest blog entry: Parkjet Collector
Reply With Quote
Old Jun 20, 2014, 08:06 AM
Registered User
United States, VA, Herndon
Joined May 2007
977 Posts
Quote:
Originally Posted by Wobisch View Post
I'm using this motor with a 4000mAh 6S Lipo and 13x6,5 APC Propeller.
Weight of the Hornet is about 2600g. Dolly is from Teichner in Germany.

Model: NTM Prop Drive Series 50-50 580kv
Kv: 580rpm/v
Max current: 90A
Max Power: 2000W @ 22.2v (6S)
Shaft: 8mm
Weight: 347g
ESC: 100A
Cell count: 4s~6s Lipoly
Bolt holes: 30mm
Bolt thread: M4
Connection: 4mm Bullet-connector

Prop Test Data:
14x8 - 14.8V / 587W / 40.3A / 2.9kg thrust
14x8 - 18.5V / 1077W / 60.7A / 4.03kg thrust
14x8 - 22.2V / 1906W / 88.2A / 5.36kg thrust
15x8 - 14.8V / 626W / 43.6A / 3.3kg thrust
15x8 - 18.5V / 1165W / 64.2A / 4.85kg thrust
15x8 - 22.2V / 1961W / 88.8A / 6.15kg thrust
Very interesting. It is the same power system I'm running in my F-16 build. I've been testing a bit with various 12x? props and have a few 13x? around but with the smaller size I'm a bit concerned about torque roll. I need to get some thrust numbers (maybe this weekend), but it is good to know I can get over 1.5:1 thrust to weight with the 14x8. If I can get over to 1:1 with a 12x10 I'll be pretty happy

What do you think your top speed is with the 13x6.5?
wilmracer is online now Find More Posts by wilmracer
Reply With Quote
Old Jun 20, 2014, 08:43 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
810 Posts
Don't know. For me it is fast enough to fly a bit scale. Sound is good, don't like the noisy sound of smaller props. Some of the flyby's in the video are full throttle.

GensAce 4000 mAh Lipo does not get fried even if I fly a longer section with full throttle. I will stay with 13x6.5. If I would change I would first try a 13x8.

http://www.ready2fly.com/pi/Gens-ACE-4000.html

Thrust table above is from Hobbyking. Did not measure it myself.

Did you see HerskerHans' SU Project. I believe he had two of these motors in the back.
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Last edited by Wobisch; Jun 20, 2014 at 08:52 AM.
Reply With Quote
Old Jun 20, 2014, 09:04 AM
Registered User
United States, VA, Herndon
Joined May 2007
977 Posts
No... haven't seen that project. That is a lot of motor...

I'm running 5000mAh nanotech packs and I think they'll hold up... Lower C rating than yours but hopefully 50C burst will cover it.

I know what you mean about the noise of the smaller props though. I ended up pulling the sound system as even on full volume I can't hear it over the prop.
wilmracer is online now Find More Posts by wilmracer
Reply With Quote
Old Jun 20, 2014, 09:41 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
810 Posts
I'm wrong. He used two 4248-650KV NTM engines with 11x7 or 11x8

http://www.rcgroups.com/forums/showt...skerhan&page=3

God damn crazy bird he made!
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Latest blog entry: Parkjet Collector
Reply With Quote
Old Jun 20, 2014, 12:59 PM
Registered User
United States, VA, Herndon
Joined May 2007
977 Posts
Ahh... that thread. Yeah... Crazy big bird. I love it.

I may end up putting two of these in the big F-14. When I wrap up the F-16 my wife has demanded I finish the 14 next. You know it has been a long build when your wife can't stand the sight of it in your shop any more
wilmracer is online now Find More Posts by wilmracer
Reply With Quote
Old Jul 06, 2014, 10:45 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
810 Posts
low pass

F/A-18 Parkjet Low Pass (1 min 49 sec)


Today I tried to hit the camera. I failed but I got nice pictures.
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Latest blog entry: Parkjet Collector
Reply With Quote
Old Jul 06, 2014, 06:25 PM
Registered User
Bay Area
Joined Feb 2004
1,994 Posts
Fun with the camera! I can only imagine what kind of footage you would have gotten with 2 F-18s in formation!
RCDad is offline Find More Posts by RCDad
Reply With Quote
Old Aug 05, 2014, 06:31 PM
DESIGNOSAUR
DesignGeek's Avatar
United States, MI, Wixom
Joined Jun 2002
725 Posts
F18 Revisted

My son and I flew the F-18 a bunch at FliteFest, and got some nice comments from the guys on the flightline. They couldn't believe how smooth and scale it flew.

It was the first time we had flown it for a couple years---It flew beautifully, my teen-aged son took to it right away, and next to the Polaris, he says this is the best flying plane we have.

Thanks again for the magnificent design.

DG
DesignGeek is offline Find More Posts by DesignGeek
RCG Plus Member
Latest blog entry: Flite Test: flite fest 2014
Reply With Quote
Old Aug 06, 2014, 09:10 AM
Registered User
United States, VA, Herndon
Joined May 2007
977 Posts
Quote:
Originally Posted by DesignGeek View Post
My son and I flew the F-18 a bunch at FliteFest, and got some nice comments from the guys on the flightline. They couldn't believe how smooth and scale it flew.

It was the first time we had flown it for a couple years---It flew beautifully, my teen-aged son took to it right away, and next to the Polaris, he says this is the best flying plane we have.

Thanks again for the magnificent design.

DG
Very cool! I did see a Polaris but I didn't see your F-18 there. Not as many Shumate builds as I was expecting to see. I had my Raptor out for about 20 flights over Friday and Saturday.
wilmracer is online now Find More Posts by wilmracer
Reply With Quote
Old Aug 06, 2014, 10:25 PM
DESIGNOSAUR
DesignGeek's Avatar
United States, MI, Wixom
Joined Jun 2002
725 Posts
We had a few good flights with the Polaris before a botched hand launch cracked the tail. It was easy to fix but we got distracted with trying to get the FPV versa blunt wing to fly right..... Eventually we replaced it with an EPP Specter airframe.

We spent a lot of our time building, tweaking and talking to everybody. Not as much flying as I thought we would do, but we had the best weekend ever!

We flew the F18 Sunday morning mostly. We had the rates too high on Saturday and it spooked my son a bit. I took the rates down a little and on Sunday he flew it beautifully.

DG
DesignGeek is offline Find More Posts by DesignGeek
RCG Plus Member
Latest blog entry: Flite Test: flite fest 2014
Reply With Quote
Old Aug 14, 2014, 01:54 PM
Park Jet Guru
jetset44's Avatar
Seattle, WA
Joined Jun 2002
5,602 Posts
Quote:
Originally Posted by DesignGeek View Post
My son and I flew the F-18 a bunch at FliteFest, and got some nice comments from the guys on the flightline. They couldn't believe how smooth and scale it flew.

It was the first time we had flown it for a couple years---It flew beautifully, my teen-aged son took to it right away, and next to the Polaris, he says this is the best flying plane we have.

Thanks again for the magnificent design.

DG
Glad to hear it, DG! Nice story. You're welcome for the design.
jetset44 is offline Find More Posts by jetset44
Reply With Quote
Old Aug 15, 2014, 06:12 PM
DESIGNOSAUR
DesignGeek's Avatar
United States, MI, Wixom
Joined Jun 2002
725 Posts
Post some pics of your Raptor Wilmracer, I'm sure I remember seeing it. Did it have orange trim along the intakes? I wondered if it was a Shumate Design.

Peter AKA Foam and Tape, really liked the hornet, I recommended he check out the rest of your designs, here, or on Parkjets.com. He couldn't believe how light it was, although mine is really kind of a porker compared to some of the builds I have heard of @ 21oz... But I guess it still seems light next to a DTFB model with all the paper left on it.

My son built a FT Viggen per the plans, it seemed crazy heavy to me, but it flies really nice too.
DesignGeek is offline Find More Posts by DesignGeek
RCG Plus Member
Last edited by DesignGeek; Aug 15, 2014 at 06:27 PM.
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
New Product Park Pilots Foam F-18 Hornet 44"WS carl rich Electric Ducted Fan Jet Talk 2 Jun 25, 2006 01:43 PM
F/A-18 Hornet Foam Parkflyer jetset44 Pusher Prop Jet Models 3262 Apr 14, 2005 02:38 PM
2 Seater F-18 Hornet Canopies... gbruce Electric Ducted Fan Jet Talk 8 Oct 06, 2003 01:39 AM
F/A-18 Hornet Plan Built daladiesman Electric Ducted Fan Jet Talk 1 Oct 29, 2002 10:40 PM
Hornet CP .... finally ... part 2 cyhyam Electric Heli Talk 90 Aug 05, 2001 09:40 PM