I would like to get a discussion started about tolerances in holes. I have noticed that despite my best efforts, I will occasionally have a hole that is drilled slightly oblong. I had one such hole on a rudder part. I took a picture and sent it to Van's. I received a very general response that everything should be OK.
Rather than e-mail Van's on a case by case basis, I would really like to understand, from a technical perspective, what is acceptable, and what is not when it comes to drilled holes. I now face the following problem. This is a rib on the elevator, where the elevator horn attaches:
It appears to me that 3 out of the 6 holes are oblong.
Would you accept this part and rivet as is? Does anyone have a link for the technical specification (IE mil spec) that is pertinent in this case?
This forum is a real life-saver for the amateur builder. Thanks for your responses.
Toad
Rather than e-mail Van's on a case by case basis, I would really like to understand, from a technical perspective, what is acceptable, and what is not when it comes to drilled holes. I now face the following problem. This is a rib on the elevator, where the elevator horn attaches:
![img_2277.jpg](/community/proxy.php?image=http%3A%2F%2Fwww.toadsrv8.com%2FImages%2FLog%2Fimg_2277.jpg&hash=d3229d2d904e22169e35f4895eb4d4dd)
It appears to me that 3 out of the 6 holes are oblong.
Would you accept this part and rivet as is? Does anyone have a link for the technical specification (IE mil spec) that is pertinent in this case?
This forum is a real life-saver for the amateur builder. Thanks for your responses.
Toad