--DeBoer wrote:

To R S Bruner and group:

Could a PSRU that provided reverse rotation be used instead of trying to
revearse the whole engine?  Seems to be a much easier approch. For example,
meshing gears vs chain/belt drive, which give opposite

output rotations with

the same input rotation.

Norman DeBoer

Norman, The reason the 2.85:1 ratio is going to
be popular is it turns the same direction. This
gives the typical clockwise rotation. (viewed
from the cockpit) The reversal of the engine,
that is clutch end forward, is best for power
takeoff. The engine is made to do it that way.
It is generally difficult to route power around
the engine due to vibration and harmonic problems.
Shafts and belts have many non-obvious problems.
Paul has an excellent article on the acre website.
The article was written by a guy that studied
harmonics and vibration problems. His work
included the driveshaft mods on the BD-5.
VERY INTERESTING READING, check it out!
Bill Jepson

 
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