Wing Stand/Twist Question

[wirejock]

Not sure about tolerance but I'll bet it would be a suprise. I was suprised bow much a wing would twist even after top skins were riveted. It would be interesting to see how one ended up buikt on a bench.
I did just as others posted. Ended up dead nuts on one wing and 1/64 on the other.

[CoolDadTed]

Originally Posted by wirejock

Not sure about tolerance but I'll bet it would be a suprise. I was suprised bow much a wing would twist even after top skins were riveted. It would be interesting to see how one ended up buikt on a bench.
I did just as others posted. Ended up dead nuts on one wing and 1/64 on the other.

Thanks Larry,

I was seeing about 3/16" difference with just the top skins attached. I just went down and put the bottom skins on as well and re-measured. Now they're "dead nuts". I can't measure any difference. I think I'll stop worrying about this.

-Ted

[dlloyd3]

When I built my 7, the plans showed measuring the twist with plumb bobs, etc. Mine were within the width of the plumb bob string--couldn't tell whether or not there was any twist. Then I noticed there was no tolerance on the plans. Called Vans and was told that how to measure the twist on the plans went back to the undrilled skins and with the pre-punched should be ignored. Or better yet, removed from the plans. I think they said if it was within a half inch, it was good.