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Old Apr 13, 2012, 06:12 PM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
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Yes, if your jet does not want to turn, move the lipo forward. But I think he also needs to bump up to 3S due to severe lack of power. Going from 2S to 3S will also help move the CG forward.

Pat
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Old Apr 13, 2012, 06:23 PM
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Quote:
Originally Posted by Cheese5 View Post
I have an 11.5in F-22 (scaled down). It also has some turning problems. Whenever you try to turn left, it starts to bank and then just does a knife edge. If you increase the speed, it snap rolls. The problem was the CG was a bit tail heavy, so that could be your F-22's problem. Add some nose weight, and try again.
I'm kind of anal about CG and usually spend quite a lot of time getting it right. I'll try anything so I'll out it through the CG machine again.
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Old Apr 13, 2012, 06:29 PM
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Originally Posted by crxmanpat View Post
Yes, if your jet does not want to turn, move the lipo forward. But I think he also needs to bump up to 3S due to severe lack of power. Going from 2S to 3S will also help move the CG forward.

Pat
I think you have it, Pat. It just appears to be lack of power. I've got some 3S 500mah batteries ordered, some 3S 450mah's on hand and am waiting on a 3S ESC. Thought I'd give it a go on the 2S batteries while waiting but the 3S are probably the ticket. The slightly heavier 3S will keep me from having to put the battery as far forward in the nose as possible like I have to do the 2S 460mah. Had this same issue on a 24" EPP foamie and the 3S batteries made it a different plane.
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Old Apr 13, 2012, 08:24 PM
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Swimmer,

I was using TP 250mAh 2S/3S. The 2S would go all the way forward horizontally.

Ksqm
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Old Apr 13, 2012, 09:33 PM
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Originally Posted by ksqm View Post
Swimmer,

I was using TP 250mAh 2S/3S. The 2S would go all the way forward horizontally.

Ksqm
Are you using a 4025 prop?

My motor is pulling 1.74amps according to my WattsUp wattmeter. This is with the new Sky Lipo 500mah 2S batteries received today from Hobbypartz. Better performance than my existing batteries so we'll see how they perform when I can get her back in the air.
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Last edited by swimmer; Apr 14, 2012 at 09:02 PM.
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Old Apr 15, 2012, 10:11 AM
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Hampton, VA
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Swimmer,

That's about right. I checked a set I have in my SR-71. On 3S you'll pull about twice that. Keep in mind, the 1811 can turn a 6"-7" prop on 2S. Max amp draw is around 5.5a. But I have been using small props to go 3S and using small batts (250mAh) to get there. Keep working at it, I'm sure it'll fly.

Ksqm
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Old Apr 17, 2012, 10:47 AM
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It Flies....

Quote:
Originally Posted by ksqm View Post
Swimmer,

That's about right. I checked a set I have in my SR-71. On 3S you'll pull about twice that. Keep in mind, the 1811 can turn a 6"-7" prop on 2S. Max amp draw is around 5.5a. But I have been using small props to go 3S and using small batts (250mAh) to get there. Keep working at it, I'm sure it'll fly.

Ksqm
Got my 3S ESC today, installed it and went out to fly with a 3S battery. Still had to put the 450mah battery fully forward but that corrects the CG. Threw it in the air with full throws on the tailerons......she flies beautifully! Other than a first 1/2 inch of the nose dinged a little it survived the learning curve . Although it is a little windy today I test flew it anyway and it flies decently in the wind. I can tell when the wind dies down it is going to be a bunch of fun.

Thanks Pat, Ksqm and others for bearing with me until I got it right.

Allan
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Old Apr 17, 2012, 02:26 PM
Must not buy more planes!
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USA, KS, Wichita
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Speaking of noses... I finally lost mine. I've broken it off twice now but, yesterday, I snapped it off in some high grass and just couldn't find it again. So now my F-22 is a couple of inches shorter.
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Old Apr 17, 2012, 02:28 PM
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Originally Posted by mclarkson View Post
Speaking of noses... I finally lost mine. I've broken it off twice now but, yesterday, I snapped it off in some high grass and just couldn't find it again. So now my F-22 is a couple of inches shorter.
Haven't done it but read where you can cut the nose off and splice a new one on. You going to try that?

Allan
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Old Apr 17, 2012, 02:54 PM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
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I have flown my F-22 noseless before. Flies great, but looks kinda funny!

And yes, I'd just cut a new nose and graft it on.

Pat
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Old Apr 17, 2012, 09:10 PM
Must not buy more planes!
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I'm gonna fly it like this for a while.
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Old Apr 17, 2012, 11:26 PM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
17,182 Posts
Had to get an F-22 fix, so I went out and flew my night flyer just now.

Pat
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Old Apr 18, 2012, 02:08 AM
Must not buy more planes!
mclarkson's Avatar
USA, KS, Wichita
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I *almost* added lights to mine. It would make an awesome night flier (if it weren't so darned loud!)
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Old Apr 18, 2012, 08:48 AM
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I *almost* added lights to mine. It would make an awesome night flier (if it weren't so darned loud!)
Speaking of lights...a couple guys showed up at our field Monday night with what they called "finger lights" on their planes. Said they got them at one of the dollar stores. They are small, bright, had no wires, red and green, quick to install and remove and they had velcroed them on the ends, top and bottom, of their wings. Said they fly at night with them.
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Old Apr 18, 2012, 04:15 PM
Must not buy more planes!
mclarkson's Avatar
USA, KS, Wichita
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I've seen that before. They'd be a little heavy for my tiny F-22, but would work fine on many of my planes.

http://www.spencersonline.com/detail..._Just-For-Fun1

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