Ray Williams
Member
Hi, I'm finishing up some last jobs before mounting the engine on my QB RV7A. I need to backdrill 2 x AN509-10R12 screws both sides through the lower longerons but it's crowded real estate in there and the forward holes can't easily be backdrilled or accurately measured because F-902 is in the way. It's hard to get a close look at the ruler down there with bi-focal glasses
Any thoughts on how to tackle this? I thought if I backdrilled the aft one and someone tells me the actual distance between the centres of the 2 holes. I could draw a line forward and drill in from the side pretty accurately.
Thanks for any help. Merry Christmas from Oz to Doug and all the amazing people on this site.
https://www.youtube.com/watch?v=Y_YAmzI2o0k
Any thoughts on how to tackle this? I thought if I backdrilled the aft one and someone tells me the actual distance between the centres of the 2 holes. I could draw a line forward and drill in from the side pretty accurately.
Thanks for any help. Merry Christmas from Oz to Doug and all the amazing people on this site.
https://www.youtube.com/watch?v=Y_YAmzI2o0k