Aileron counterbalance mistake

I am not sure if it is just being tired, not paying attention, or both but my error rate is going up.....

Due to what I think is confusing wording on 22-05 step 2, I drilled the two outside holes on the counterbalance tube for the Aileron to #27 instead of starting at #40 and then going to #30 later. These are the outside most holes in the nose skin/tube.

It calls for an LP4-3 rivet which is #30. I will just order another stainless tube and start the whole thing over if needed, but before I do that is there a blind rivet which would work for a #27 hole? I already mailed Vans to see what would be acceptable including ordering a new tube but this might make me feel better while I wait if there is such a beast.

For those that are yet to get to step 2 the wording is:

"Final-Drill #27 the marked holes and the two #40 holes in the
counterbalance"

I read that as Final drill all of them #27.

Oversize Cherrymax rivets - 1/8" takes a #27 hole.

Can you just rotate the tube to a new position and redrill it correctly?

Bruce,
That is another option. I know it is strong material, wasn't sure if that was acceptable given I have already drilled three #27 holes, two on the bottom and one on the top. If I rotate it that is a lot of holes around the circumference.

I would check with Van's , but I doubt it would be a problem.

It's just a counterweight and not structural

Thanks for all the replies. Vans actually came back and talked about adding additional rivets in the middle of the line, but after all of that I just mentioned Bruce's suggestion and they agreed...


I will rotate the tube and start over

Oh yeah, and read closer and ahead in the plans

Thanks everyone

Glad to hear my suggestion is acceptable. Confession: I did something similar on my -9A after I inadvertently built some twist into my first attempt at the ailerons.

Resurrecting this thread

I believe that what JDBoston was actually writing about were the holes drilled in the A-1009 counterbalance and the Aileron leading edge on Page 22-04 step 4 as the holes drilled in 22-05 step 2 end up up sized to #27 for nut and bolt installation.

Jeff-

Side note; I know drilling that darn pipe has been challenging in the past. I'm gathering all the good ideas before I do mine. What was your process?

Thanks!