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Old Mar 11, 2011, 12:58 AM
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alpea 41's Avatar
United States, CA, Chino
Joined Oct 2007
10,726 Posts
Got F-22 #3 all built. With a Turnigy 2730 1700 K v ( 28 grm) motor 8 A great planes esc. a GWS E P 5043 prop. ( had to go with the largest I could cuz of the low Kv ) and a Rhino 450 ma 3 s 20 c Li-po... No paint yet and it's a bit of a porker at 5 oz. But with that prop it has thrust of 1 to 1 at about 1/2 throttle. I came here tonight to check proper C G..... And with no paint and that equipment it hit the C G mark perfectly with that battery tucked in the slot.

Yeah Pat , I realy want you to try the 75% MDC F-14. And I got this F-22 so we could fly together.. See ya next week.
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Old Mar 11, 2011, 10:42 PM
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alpea 41's Avatar
United States, CA, Chino
Joined Oct 2007
10,726 Posts
Maiden flight was perfect. Plenty of power on that set up. And as far as being heavier, it rolls tighter and handles brisk afternoon wind better. I'm very happy with it. Gets close to 10 min. flight on 500ma 3s
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Old Mar 17, 2011, 12:43 AM
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alpea 41's Avatar
United States, CA, Chino
Joined Oct 2007
10,726 Posts
Here's Flying Buddie Bob Vincent flying it filmed by his son Blake.
MVI 0222 (4 min 5 sec)
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Old Mar 17, 2011, 01:06 AM
MultiCopterPilot & Film Maker
crazyj's Avatar
United States, CA, San Ramon
Joined Nov 2002
2,545 Posts
Quote:
Originally Posted by alpea 41 View Post
Here's Flying Buddie Bob Vincent flying it filmed by his son Blake.
http://www.youtube.com/watch?v=DA484zpL2Lk
Nice flying, all the folks at your field should have one, and do formation or pylon racing
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Old Mar 17, 2011, 01:44 AM
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alpea 41's Avatar
United States, CA, Chino
Joined Oct 2007
10,726 Posts
You post at the 50mm minni J Power Jet thread don't you?
We're all getting those for our formation and pylon racing.
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Old Mar 17, 2011, 01:54 AM
MultiCopterPilot & Film Maker
crazyj's Avatar
United States, CA, San Ramon
Joined Nov 2002
2,545 Posts
Quote:
Originally Posted by alpea 41 View Post
You post at the 50mm minni J Power Jet thread don't you?
We're all getting those for our formation and pylon racing.
Haha, indeed I post in the 50mm Jpower jet thread and in this new Jpower thread:

http://www.rcgroups.com/forums/showt...&pp=20&page=10

If you haven't done so, check out these new mini warbirds from Jpower. They are awesome! We are running over 100mph with stock electronics on 4s.

These 50mm jets are awesome for formation flying. Gooniac33 and I team up all the time and fly our 50mm jets.
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Old Mar 17, 2011, 01:57 AM
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alpea 41's Avatar
United States, CA, Chino
Joined Oct 2007
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Yeah I admire what Goon has done and Joe and The Don. I'm just a newbie at em. But we got Bob V. to show us his mods . so we'll be having some fun.
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Old Mar 20, 2011, 08:02 AM
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P11GT's Avatar
Norway
Joined Mar 2010
56 Posts
Greate little jet, have just been building one.
Motor: 1806N - 2100kv
Prop: TGS sport 4.5 x 4.5
ESC: Turnigy Plush 12A
Servos: Hextronics 5g
Lipo: Turnigy NanoTech 3S 460mA
Recvr: Spektrum AR6110e
AUW: 166g

With this setup I had to have WOT all the time just to get it staying in the air.
Many of the people that have been building this jet, has about the same setup and have no problem with flying it.
Is it the prop that is wrong. Have a 5030 that I will try.
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Old Mar 20, 2011, 10:44 AM
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alpea 41's Avatar
United States, CA, Chino
Joined Oct 2007
10,726 Posts
Make sure the prop is on "forwards". with the numbers facing the front
You seem to have experience so that's probably not your problem. But a prop on backwards only gives about 1/2 the thrust.
With your motor, esc, and a 3 cell you should be climbing verticle at 1/2 throttle.
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Old Mar 20, 2011, 12:40 PM
Pusher jets rule!
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Mesa, AZ
Joined Jan 2006
17,683 Posts
Yeah, what Al said. Make sure the front of the prop is facing the front of the plane. With that setup you should be going vertical with no problem.

Pat
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Old Mar 20, 2011, 12:48 PM
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P11GT's Avatar
Norway
Joined Mar 2010
56 Posts
Thanks, I always see to it that the numbers are facing to the front.
It seems like it did not get the high rpm. with the 4.5x4.5 sport prop.

Made a prop from a 8x4.3 and tok with me a 5030 to the field.
That was something else. The 5030 gave me more rpm but the cut down prop gave me more thrust. Both made the jet fly like I hope it would.
I like the cut down one best so I will balance it good and try again.

Made som video of both, will post them later this evening.
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Old Mar 20, 2011, 03:44 PM
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martys's Avatar
New Jersey
Joined Sep 2002
1,241 Posts
Quote:
Originally Posted by alpea 41 View Post
Make sure the prop is on "forwards". with the numbers facing the front
You seem to have experience so that's probably not your problem. But a prop on backwards only gives about 1/2 the thrust.
With your motor, esc, and a 3 cell you should be climbing verticle at 1/2 throttle.
PG11GT I did the very same thing on my first F22 until my Buddy Fran pointed it out. If the prop is on backwards it will act the way you are describing. Mine is a rocket with the same set up you are using. It's a great little airplane. Just finished my "back up" airframe just in case! Marty
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Old Mar 20, 2011, 04:12 PM
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P11GT's Avatar
Norway
Joined Mar 2010
56 Posts
That was what I was thinking to. I even dobbel check the prop again and it is 100% correct.
But when it suppose to hit that high rpm the plane start to vibrate.
Have to check it out once more, and balance the prop again.
Maybe I have done something wrong when i balance it the first time.

I had my first flight with it today with 5030 prop and it was OK, but was missing a little bit of trust.
If yours a rocket with the same setup, then mine should be a rocket to.

I`ll bee back.
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Old Mar 20, 2011, 05:36 PM
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Norway
Joined Mar 2010
56 Posts
Ok, here is the video.
the first one is with the 5030 prop.
http://www.youtube.com/watch?v=xweVyZkou-w

The second one is with the 8x4.3 that has been cut down.
http://www.youtube.com/watch?v=lMRhXFRs1es
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Old Mar 20, 2011, 07:23 PM
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P11GT's Avatar
Norway
Joined Mar 2010
56 Posts
Maybe you are right Martys, I checked out the 4.5x4.5 prop. and it was not balanced.
I balanced my 4.1x4.1 insted of the one I was going to use. That may be the reason I didn`t get the hight rpm that I was expecting.
have to try it again with the 4.5x4.5 and see if it has become a rocket.
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