Author Topic: Full circle  (Read 104 times)

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Offline Cut4fun

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Full circle
« on: February 22, 2019, 07:45:01 am »
Cant find the dang thread.

Saving pics

Jerry Gingras pic of MVP 272 cranks

Pic of my MVP 5000 partner crank

REDNECK Saw Repair

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Offline SquareFile

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Re: Full circle
« Reply #1 on: May 05, 2021, 03:09:24 pm »

Offline Al Smith

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Re: Full circle
« Reply #2 on: June 22, 2021, 08:26:17 am »
It's an interesting theory with f/c crank throws .Very popular during the glory days of 2 cycle go karts .I think the idea was to reduce the crankcase volume therefore increasing the transfer pressure .
The full circle cranks on Harley v twins was just to have the crank throws act as an internal flywheel plus it was much more simple to make .The actual design of that engine is a direct take off of a radial  aircraft engine except it only has two cylinders .
I have a theory the increased weight of the rotating mass with a full circle crank would some what increase the inertia mass regarding changing potential energy into kinetic  energy under load .--goes back to Newtons laws of physics .

 

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