Quote:
Originally Posted by Ecky
I wonder if the pulley being larger on the bigger motor is only to spin the accessories faster, or if it also serves to provide more dampening. Do you think changing the crank pulley would be safe?
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Hmmm that's an interesting question. Dampers work at any speed, but the more rotational inertia on the outer ring, the more energy the damper will absorb, so going to the smaller pulley will reduce the damping effect.
There are people running solid aluminum pulleys on a number of engines without snapped cranks, so I want to say on most engines, you're probably fine? Some engines are known for broken crankshafts when running without harmonic damping, so I would be more worried about those.
If the crank pulley is to be avoided, then underdriving accessories would involve switching out each pulley separately which is annoying.