Jun/Jul 2008

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AS I SEE IT

By Lewis H. Cline

1102 West River Road, Battle Creek, Michigan

I found the article by Wilfred Koskela, page 11, Nov.-Dev. GEM to be very interesting. He had a question regarding the Counterweight cast in the flywheel of the Old Reliable Hart-Parr tractor (Bottom of page 14) Here is my answer to it:

While it's true that a counterweight here does not seem necessary, the throws of the crankshaft being opposite, on investigation you will no doubt find another at the other end of the crankshaft, (perhaps out of sight, inside of the clutch) (which if I'm not mistaken is inside the belt pulley) These counterweights are opposite (180 degrees from) the crankshaft throws. True, the throws of the crankshaft balance each other, but this is a static balance (balanced only while the crankshaft is not turning) On large bore motors, especially those not of the opposed type, where the cranks are far apart (leng...

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