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#Post#: 84520-------------------------------------------------- |
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Full circle |
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By: Cut4fun Date: February 22, 2019, 6:45 am |
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Cant find the dang thread. |
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Saving pics |
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Jerry Gingras pic of MVP 272 cranks |
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Pic of my MVP 5000 partner crank |
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#Post#: 87956-------------------------------------------------- |
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Re: Full circle |
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By: SquareFile Date: May 5, 2021, 2:09 pm |
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https://youtu.be/GWngpdMzDJY |
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#Post#: 88120-------------------------------------------------- |
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Re: Full circle |
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By: Al Smith Date: June 22, 2021, 7:26 am |
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It's an interesting theory with f/c crank throws .Very popular |
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during the glory days of 2 cycle go karts .I think the idea was |
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to reduce the crankcase volume therefore increasing the transfer |
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pressure . |
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The full circle cranks on Harley v twins was just to have the |
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crank throws act as an internal flywheel plus it was much more |
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simple to make .The actual design of that engine is a direct |
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take off of a radial aircraft engine except it only has two |
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cylinders . |
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I have a theory the increased weight of the rotating mass with a |
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full circle crank would some what increase the inertia mass |
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regarding changing potential energy into kinetic energy under |
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load .--goes back to Newtons laws of physics . |
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#Post#: 90308-------------------------------------------------- |
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Re: Full circle |
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By: Chainsawrepair Date: November 20, 2023, 3:54 pm |
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One of the mods in my FB CR group does full circle cranks. Here |
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is 372 and 4910 501 ones |
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#Post#: 90311-------------------------------------------------- |
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Re: Full circle |
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By: 3000 FPS Date: November 22, 2023, 11:56 am |
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[quote author=Cut4fun . link=topic=7196.msg90308#msg90308 |
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date=1700517299] |
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One of the mods in my FB CR group does full circle cranks. Here |
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is 372 and 4910 501 ones |
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[/quote] |
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That is some nice looking cranks. Some nice looking work. |
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#Post#: 90474-------------------------------------------------- |
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Re: Full circle |
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By: SquareFile Date: February 4, 2024, 2:17 pm |
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[quote author=Cut4fun . link=topic=7196.msg90308#msg90308 |
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date=1700517299] |
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One of the mods in my FB CR group does full circle cranks. Here |
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is 372 and 4910 501 ones |
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[/quote] |
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One on right appears to be separating. The one on the left is |
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scalloped "turbocrank" 70s bike tech that, well.... I've seen |
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both. JMO, searching for big gains that aren't there. Carbs and |
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porting is where it is at. Both are a 2fold. |
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#Post#: 90951-------------------------------------------------- |
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Re: Full circle |
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By: EHP Date: October 29, 2024, 6:05 pm |
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I have owned and worked on other full circle cranks out of |
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Quebec , they work fine but the problem is the crank fills the |
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crankcase up so much you cannot move alot of air so yes they |
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work and run good but if someone shows up that has his crap |
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together with a normal stroked crank your not going to like it . |
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On a full circle 272 crank setup you donot have to do much carb |
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work to run on 12026 fuel so that along tells you your not |
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moving much air |
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