wing pins

[Alex Edwards]

I had trouble getting the wings lined up to get the pins in. I found that the top of the spar ws just rubbing on the fuse center section as shown in the image in the post below. A light file and the wing pins go in easily now.

Alex

http://www.vansairforce.com/communit...11&postcount=2

[DonFromTX]

I think this is a very common problem, just not yet discovered by everyone. You cannot see what the problem is, so people have used elaborate means to "force" the wing in, when this little bit of inner skin is the whole problem. I know I discovered it by accident after investigating why I was having trouble. If you have your wings off, you can see if that has been a problem, that inner skin will be distorted if it has been dragging there, at least mine was.

[Tony_T]

I posted this picture in the forum in Feb of 2009...thats 7 years ago. I was not the first to find this clearance issue, one of the really early guys found it, maybe Marty. So I took a sixteenth inch off before assembling the parts. I don't remember if I forwarded the issue to Van's but I think I would have. I don't think all the planes had an issue, but some certainly do.

[rv3flier]

Don,

If you're willing to make a batch of your offset lobe wing tool, count me in for one. A great idea, especially when you have to install the wings by yourself.

John Warren
RV12 124RN

[DaveWelch]

Yah, and even if you're not installing them alone a little help on the alignment would be welcomed since you don't have much leverage on the thing when you are in position to install pins.

Combine that with occasional communication difficulties with a helper when trying to get the stub spars perpendicular to the centerline while at the same time getting the wingtip raised or lowered to align the holes..."I said forward, OK toward the front then, Now AFT...no back...NOT OUT...never mind the dog...OUCH"

Don, your PinCam could save at least one marriage!

[DonFromTX]

I have no help so I have put the wings on and off several times, all by myself, that necessity was the mother of the invention
It don't seem to be necessary now that I removed that offending portion of the inner skin that was giving me troubles, but I suspect that when I get the rubber seal on, it will prove to be useful again.

[RFSchaller]

We used to say in field engineering: beat to fit, paint to match!😜

[MTDRV12]

We had a struggle to get the wings without large tools.. We changed the wing seal from foam to rubber u seal, problem solved. The product we used has been suggested before. http://www.flyboyaccessories.com/Fli...rim-p/2306.htm
It was also used on the vertical stab and on the glare shield edge.

[rvbuilder2002]

The kit supplied seal works very well (and doesn't appreciably effect wing installation difficulty) if the procedure for marking and trimming the wings skins for a specific constant gap as detailed in the construction manual is followed.

[rvbuilder2002]

Originally Posted by DaveWelch

Combine that with occasional communication difficulties with a helper when trying to get the stub spars perpendicular to the centerline while at the same time getting the wingtip raised or lowered to align the holes..."I said forward, OK toward the front then, Now AFT...no back...NOT OUT...never mind the dog...OUCH"

An additional benefit of the kit supplied seal.....

Since it is mounted on the side of the fuselage it acts as a guide for aligning the wing properly..... with a little practice the person handing the wingtip can get good at using it as a sighting device (in relation to the root end of the wing) to determine proper wing sweep and pitch once the wing is nearly but nor quite fully inserted (without someone else doing the play by play narrative for them.....).