Uh, actually, no. The slipper clutch is set by screwing the clutch assembly
tight,
and is much higher breakaway torque than the dogs.
The main Bellevilles set the friction in the dog, as set by the shims and
measured
using the crank lock and 20ft-lb minimum prop rotation friction test (on the
flats).
As for the low rpm running, the dogs get pocketed and worn when the underloaded
prop mass resonates with the engines reverse torque pulses. Once in resonance
the positive feedback drives the system (like aero flutter of control surfaces).
Best way to avoid any resonance and messing up the dogs is to avoid the resonant
frequencies (dependent upon prop rotating inertia), and loading up the prop
with power.
Fwiw,
Cheers,
PeteZ
> On Dec 26, 2022, at 4:55 PM, Area-51 <goldsteinindustrial@gmail.com> wrote:
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> The washers are there to preload the slipper clutch.
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> Go read the book...
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> Read this topic online here:
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> http://forums.matronics.com/viewtopic.php?p=509799#509799
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