rough rider
Expert
Did anyone here that they changed the crankshaft design on the 2010 models to reduce the clutch rattle, I thought i read something about that but cant seem to find the post or article?
Daranello
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Never read that.....
Nytro40th
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never heard that either
grizztracks
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I don't believe the crankshaft is the cause of the rattle. I think it's all in the design of the clutch. My Nytro has very little rattle compared to my 05 Vector which is annoyingly loud.
Alatalo
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If you want to sort out the clutch rattle, I think you will have to either install a reduction gear or change the firing order of the engine...
LazyBastard
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A heavier crankshaft will have a greater inertia and thus will result in less rattle. Another thing that can be done related to the crankshaft is dampeners, i.e. blocks of rubber to isolate the PTO from the actual crankshaft. Not saying that they are changing anything, just how you can make changes to this effect.
Oh, and a reduction gear will NOT reduce the rattle... it'll make it WORSE since you have an extra set of parts clanging together.
Oh, and a reduction gear will NOT reduce the rattle... it'll make it WORSE since you have an extra set of parts clanging together.
Alatalo
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A reduction gear itself will for sure not change the rattle, but a reduction gear with some kind of gear ratio will for sure do this. This offers the possibility to separate the crankshaft rpm from certain eigenfrequencies ("natural frequencies") of the clutch assembly. And so does a different firing order.LazyBastard said:
I do not know about your clutch, but mine seems to rattle only at certain rpms (idle). For me, this is a sure sign of torsional eigenfrequency problems...
LazyBastard
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Actually, you will find that it rattles at any speed under a certain threshold. The reason for this is that as the engine speeds up, inertia keeps the crank moving a more constant speed rather than slowing down as it approaches compression cycle and speeding up as it reaches combustion.
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