"Dave Nadler" wrote in message
...
A prospect was checking out the nifty Antares 18T
sustainer system somewhere over the forest west of ZWB,
when to his great surprise, the propeller departed.
Hell of a way to impress a prospect.

The problem is with the Solo propeller shaft with the
belt reduction system as used on, IIRC:
- Ventus CM (not V2)
- Duo T
- DG-100T
I'll bet any money the problem will turn out to be torsional harmonics.

Remember the problem with the BD-5? Some excellent research was developed
out of the problems of using a 2 cycle engine in that aircraft.

Seems I remember that one fix involved a sprag clutch (one was slipping) to
get over the torque reversal at some rpms.
--
Jim in NC


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