Originally Posted by jimgreen
The RV8 was apparently not a prepunched kit initially, so some of the builder sites show the fuse on a jig. This likely would cause changes in a number of areas. At the moment I'm having trouble with the WD822 gear tower weldment and wishing that wasn't prepunched. Can't get the holes to line up with the skins and gear tower outer plate.
I'm sure Scott will chime in.
There is a difference between "prepunched" and "match hole".
"Prepunched" required jigging and I think the only thing prepunched ware the skins, not the underlying structure.
With the "prepunched" kits, both the skins and underlying structures were punched so you just clecoed them together and drill the holes to final size. No jigging required.
There was also an increase in the Acrobatic Gross Weight. I think this was due to a change in the main spar stiffener.
You will have to check with Van's to find out at what serial number each of these changes were incorporated.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC