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I am not following your question about the torque arm spinning on the end of the drill. The pump is removed and the drill provides the energy to run the pump. Just hold it in hand to operate
The VG's are part of the Horton STOL kit. Not sure on the effectiveness but must provide some benefit in stability at slow speed. Originally from the R-STOL system and copied by Horton
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Herb R Harney
1968 337C
Flying the same Skymaster for 47 years
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