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One ring vs two

bwalker

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If you mean like a crank stuffer, they increase velocity thru the transfers.
Which given the operating charchteristics of a chainsaw it's probaly in most cases a good thing. It's also why the metal hogged out crew is of base.
 

awol

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What's the senses on circle cranks in a saw, worth it or not?
Say in a stock appearing race saw.
If the transfers are timed properly, a full circle crank will always increase maximum hp output, but usually at the cost of a loss of rpm range. It also probably depends on the original capacity of the case, and intake timing.
I have done one full circle crank so far, and its been a great experience!
 

dieselfitter

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If the transfers are timed properly, a full circle crank will always increase maximum hp output, but usually at the cost of a loss of rpm range. It also probably depends on the original capacity of the case, and intake timing.
I have done one full circle crank so far, and its been a great experience!
Interesting... Could you elaborate please?
 

jmssaws

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A 066 is a velocity saw,it lives and dies on it so I'm curious whether or not a circle crank will be worth the effort and money.
 

awol

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Well on a tight case such as the 7900 Dolmar, with bottom fed transfers, I think a full circle crank would have a limited amount of effectiveness. For one, the case is already pretty tight, and then the crank at least partially obstructs the flow path to the lower transfers.
 
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