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ASK21 air brake bell crank repair
On Dec 25, 7:07*am, JJ Sinclair wrote:
On Dec 23, 6:31*am, Geoff Brown wrote: I've been trying to find anything on the www that shows how to access the pivot bolt that secures the air brake bell crank that is located in the air brake box on an ASK21. I've had no luck. *Does anyone else have any pointers? Thanks Geoff, If I understand the problem, you need to drill a hole on the forward side of the spar in order to get at the other end of the bolt that secures the air brake pivot bolt. I would tap-test the width of the spar cap and then add an inch to show where to drill an exploritory hole. Start with 1/16 drill and stop if you get anything other than skin/foam/skin. If that goes OK, then widen it out to 1/2" in order to get a small light and mirror in there. Now you can adjust the hole as necessary to remove/replace the bolt/nut. I have replaced the inner skin with pre-cured glass piece that overlaps the inner skin at 40:1 (about 3/4"), held in place with 3 strings that pull it up until epoxy cures.Then replaced the foam core (plug with no scarf) followed with a normal 40:1 scarf on the outer skin replacement + one layer of 92110 extending out another 1/2" to make sure none of the uni tries to get loose. Hope this helps, JJ Strike's me this thread could be merged with the one on cheap video cameras. A search of Ebay for "USB endoscope" turns up some cheap options. One could be used for inspecting the interior of gliders through tiny holes. IIRC, something like this was used to inspect the interior of DUO wings after an AD. |
#12
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ASK21 air brake bell crank repair
Thanks for all your help - I'll let you know how we got on. On Dec 23, 6:31=A0am, Geoff Brown wrote: I've been trying to find anything on the www that shows how to access ..... |
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