Doug wrote:

I've access to the early OMC 45 hp snowmobile eng. -lots of fins- and I
realize that the factor for removing excess heat may not be (linear?) with
the increase in HP but is there a way to calculate how much surface area
would be needed to remove heat and in the end what would be the advantage ?
And I assume the fins could only be so long to optimize conducting heat
effectively.

It is easier to aircool a one rotor engine like the OMC.

Paul Lamar
 
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