REFLECTOR: Running without prop

[Scott Derrick]

all big bore continentals have balancers.  so do lyc 4 bangers..  The
reduce torsional stress's on the crank shaft, but apparently not enough 
for the IVO.  The rubber or brass bushings don't do the work. the moving
big steel balancers do that.

Scott

Dave Philipsen wrote:
> Brian Michalk wrote:
>> Okay, I'll jump in here...
>>
>> What I wonder, is if one took the rotational inertia of the MT, and
>> duplicated it by adding a plate to the IVO to increase the rotational
>> inertia, would the IVO still fail?  There's no question that the
>> pulses on the IO360 are larger than on the Franklin.  Maybe
>> increasing the inertia of the system could reduce the negative torque
>> pulses?
> Just thinking aloud here and from my experience with automobile
> engines.  Would a device similar to the harmonic balancer on an auto
> engine work?  As I remember, it is essentially a fairly massive iron
> ring with some kind of rubber sandwich between it and the hub.  I
> think the rubber absorbs some of the harmonics.
>
>
> Dave Philipsen
> Velocity STD FG
> N83DP
>
>
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