Great Planes RV-4 kit build -- my first kit - Page 46 - RC Groups
Thread Tools
Feb 13, 2012, 09:07 PM
Zor
Zor
Suspended Account
Quote:
Originally Posted by bunkai
this is probably a noob question but I was wondering how exact to the plan does the shape of the LE have to be for performance? I have it darn close but since I was in there sanding for hours to get it right was wondering how important it is to have it done exactly as shown.
The leading edge within the first 5% or so from the very front point is not critical.

The air splits quite a bit ahead of the leading edge due to compression at the very edge.

You have no reason to be concerned as long as you have a reasonable approximation and it looks good.

Zor
Sign up now
to remove ads between posts
Feb 13, 2012, 09:28 PM
Registered User
great answer - thanks Zor!
Feb 13, 2012, 09:30 PM
Registered User
RCwings quote

How does it mate up with the fuse "wing saddle"? You may need to work it a little too.


good point I hadn't thought that far ahead.
Feb 13, 2012, 09:54 PM
North Simcoe Flyers
rcwings's Avatar
Quote:
Originally Posted by bunkai
RCwings quote

How does it mate up with the fuse "wing saddle"? You may need to work it a little too.


good point I hadn't thought that far ahead.
Oh never mind yet...you probably do not have the fuse started. But something to keep in mind when the time comes. Be careful not to alter the wing incidence if you need to do any shaping on the saddle.
Feb 19, 2012, 02:33 PM
Registered User
Ok here is where I'm at. Have the dihedral brace and doubler in all epoxyed and curing.

Rob


sux that the clamps left very small dents on the LE...

did I mention I'm starting to dislike the sanding part of this?
Last edited by bunkai; Feb 20, 2012 at 07:44 PM.
Feb 20, 2012, 01:37 PM
Registered User
I'm starting the fuse and grab the 1st parts the FFS sides and they are both C'd. I've wet them and put weight on them. Hopefully they straighten out. So much for making progress today.
Feb 20, 2012, 01:39 PM
Registered User
tailskid2's Avatar
You are using some good gluing techinques to hold the parts in place - first time build? Hummmmm....
Feb 20, 2012, 01:42 PM
Registered User
clarify huummm

Yes it is my 1st time build. I've not glued these parts or done anything other than wet them, lay them flat with weight to get them straight before I start. As for technique, I've relied on this and other forums and sites for advice and examples etc.
Feb 20, 2012, 01:45 PM
Registered User
tailskid2's Avatar
You are holding the two wing halves together AND keeping the bracing of the wing joiner securely all at the same time. This is the weakest point where a wing will (or if it will) fail and it appears yours won't!
Feb 20, 2012, 01:48 PM
Registered User
Would that mean you agree with the technique I used there? I looked at other builds for examples of how they did it and went out got clamps that would fit etc.I also spent alot of time prefitting to make sure the dihedral brace fit nice before pulling out the epoxy. It was the first time I have used epoxy.
Feb 20, 2012, 01:54 PM
Registered User
tailskid2's Avatar
yes, you are using the correct technique!
Feb 20, 2012, 01:56 PM
Registered User
wheew .... thanks

you had me worried
Feb 22, 2012, 05:37 AM
Registered User
pablojaime's Avatar
Quote:
Originally Posted by bunkai
It was the first time I have used epoxy.
It was 30 Min. Epoxy?

Pablo.
Feb 22, 2012, 09:03 AM
Registered User
Quote:
Originally Posted by pablojaime
It was 30 Min. Epoxy?

Pablo.
Yes it was Pablo. Nice progress btw.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Wanted Wanted:Great Planes RV-4 40 kit Warby Aircraft - Fuel - Airplanes (FS/W) 1 Nov 27, 2005 06:04 PM
FS- Great Planes RV-4 Ready to ... wolfast Aircraft - Fuel - Airplanes (FS/W) 2 May 01, 2004 06:56 PM
Ebay - Magnum XL-61 4-stroke and Great Planes RV-4 kit <24 hrs to go neilo Aircraft - Fuel - Airplanes (FS/W) 0 Feb 23, 2004 01:37 AM
Great Planes RV-4 kit pepflyer Electric Plane Talk 2 Jan 10, 2003 05:09 PM
Great Planes RV-4 conversion anyone? All__talk Sport Planes 7 Apr 01, 2002 03:53 PM