I'm starting to skin my -9A left wing when I had a thought. "I'll see how well that aileron bellcrank fits while I can see the whole works." GOOD IDEA.
Per the plans, the aileron brackets are installed way back on the naked spar with the tiedown bar. The bellcrank is installed in it's brackets AFTER the outboard top skin is riveted in place. Because of 1. the length of the bellcrank bolt and 2. the centerline of the bellcrank bolt lies hidden behind the spar flange, the bolt could never be installed without unbolting the brackets from the spar. Not easily done as the leading edge is installed at this time. Unless the plans or the brackets have changed over time (200 series s/n wing kit), I recommend installing the bellcranks and their brackets as an assembly before anything else is permanently attached to the spar. Anyone else seen this situation?
Steve
Per the plans, the aileron brackets are installed way back on the naked spar with the tiedown bar. The bellcrank is installed in it's brackets AFTER the outboard top skin is riveted in place. Because of 1. the length of the bellcrank bolt and 2. the centerline of the bellcrank bolt lies hidden behind the spar flange, the bolt could never be installed without unbolting the brackets from the spar. Not easily done as the leading edge is installed at this time. Unless the plans or the brackets have changed over time (200 series s/n wing kit), I recommend installing the bellcranks and their brackets as an assembly before anything else is permanently attached to the spar. Anyone else seen this situation?
Steve