Brief Description: Secured pitot/AoA tubing at bellcrank
As I mentioned in the last build session, the red air tubing is touching the aileron bellcrank and that is not acceptable. Over time, the moving bellcrank will wear a hole in the tubing and then I would have a leak in my pitot/AoA system, which defeats the purpose and is no good.
I studied the tubing runs for a bit and decided that the best method to fix the interference would be to make another bracket with holes drilled lower (closer to the spar and farther from the bellcrank) and to use two adel clamps on the other side to secure the tubing on both sides of the aileron bellcrank. I could have probably gotten away with just adding the adel clamps and keeping the original bracket, but why not take the extra time and make it right. I fabbed up another air hose bracket and then smoothed and primed it and set it aside to dry.
Since I was able to use a factory pre-drilled hole for the adel clamps, there was no need to drill a new hole - which should only be done with factory approval when drilling into a spar web. After getting everything installed and removing and then re-pulling the air hoses back into position, I re-torqued the nuts and buttoned up the wing again with clecos.
There really isn't a good way to photograph the clearance between the air hoses and the bellcrank, but there is no longer any interference – the hoses and the bellcrank are socially distanced...
