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View Full Version : Great Planes Fokker D.VII warped wing


pox67
02-18-2008, 08:37 AM
Hi, I have recently picked up an Electrifly Fokker D.VII and am slowly putting it together.

I have just got the wing struts in and test fitting the top wing. With everything in the right place the bottom wing is getting some major wash out at the tips. The warping is even putting wrikles in the covering.

I have gone over the instructions a heap of times and everything is in the right spot. I have read other build threads but not come across this problem. So maybe it is meant to be like that and I just need to reshrink the covering.

Cheers for any advice.

KIMBERWHIP
02-18-2008, 11:02 AM
If your landing on grass it tends to tip forward, elevator up after touchdown seems to help.

FlyingMonkey
02-18-2008, 11:10 AM
is the "warping" even on both wings?

pox67
02-18-2008, 11:17 AM
The warping seems to be the same on both sides of the lower wing. That is what made me think it might be built in wash out but the wrinkled covering had me worried.

FlyingMonkey
02-18-2008, 11:25 AM
I haven't seen a pre covered model that didn't have some wrinkling, but that might just be me.

WWI Ace
02-18-2008, 11:31 PM
Is there any way that you have your interplane or outside struts backwards? Just a thought. Steve

pox67
02-19-2008, 05:21 AM
Yep I have checked everything over a few times. All the struts are definitely in the right place.

I'll just go ahead with it and hope it is meant to be that way.

WWI Ace
02-19-2008, 11:30 PM
You'll probably be fine!! Steve

pox67
02-25-2008, 10:45 PM
Cheers Steve, it was fine.

I put it up this morning in a local park. The plane flew fine but was a bit big for the park. I think I had the CG a bit to far forward as it flew very fast and needed a lot of up elevator trim to fly level at 3/4 throttle.

The plane is probably to big and fast for park size at the moment for me. I am used to a floaty GWS E-Starter and Corsair. I got it down safe though after a 5-8 minute flight, slight nose over on the end as I forgot to put on elevator dual rate before landing.

I'll move the CG back and try in a larger park. I can see how it would be a great flyer in the right conditions :)

WWI Ace
02-26-2008, 12:48 AM
I'm glad that it went well pox!!! Steve

KIMBERWHIP
02-29-2008, 10:24 AM
What prop are you guys running?

pox67
02-29-2008, 12:52 PM
I am running a 10x4.7 APC electric on the recommended Rimfire. After only one flight I don't have much to report other than it made it really move. I'll be trying a GWS 10x4.7 as I have a few lying around.