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HS spar doubler problem

Flying8

Active Member
Has anyone else had an issue with drilling the HS front spar, 0005, 0006 ribs, 810 spar angle and doubler together? The top hole has given me problems on the right side where you measure per the drawing and your edge distance comes up short on the spar doubler and HS-00005 rib... ordered parts to try again.. left side no issue.
 

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When you trim the spar, you have to be very careful to cut away only the bare minimum to only trim the flange and not into the web at all. Maybe even leave some of the spar radius a little and flatten it. Before you drill the holes, clamp everything and mark the holes with a sharpie. This way you can see what edge distance you will have before committing to the drill. When you are happy, clamp it together and line up the marked holes and drill. Does that help?
 
When you trim the spar, you have to be very careful to cut away only the bare minimum to only trim the flange and not into the web at all. Maybe even leave some of the spar radius a little and flatten it. Before you drill the holes, clamp everything and mark the holes with a sharpie. This way you can see what edge distance you will have before committing to the drill. When you are happy, clamp it together and line up the marked holes and drill. Does that help?

Yes, trim very small bits at a time, and then lots of clamping and checking your holes before you drill.

20140703-061819-22699951.jpg



Chris
 
3rd attempt got it right. Completed the vertical stab and rudder while I was waiting for the replacement parts.
 

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