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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Big End Replacement
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<blockquote data-quote="Nigel Spaxman" data-source="post: 134758" data-attributes="member: 2907"><p>A friend of mine used to build two stroke racing engines for go kart racing. He had a high reputation for building winning engines. These 100cc Yamaha engines revved to over 15,000 RPM. He knew how to get all the clearances right. , what beaings to use, and how to adjust the ports to get the best timing for racing. People would pay a lot of money for one of his engines. He showed me how he trued cranks. The amazing thing is he did it by eye. If you use a piece of white paper against a black background as a straight edge and then rotate the crank on bearings when you look down over the crankshaft, you can see movement that measures as little as .0001" He had dial indicators as well but he prefered to use his eye.</p></blockquote><p></p>
[QUOTE="Nigel Spaxman, post: 134758, member: 2907"] A friend of mine used to build two stroke racing engines for go kart racing. He had a high reputation for building winning engines. These 100cc Yamaha engines revved to over 15,000 RPM. He knew how to get all the clearances right. , what beaings to use, and how to adjust the ports to get the best timing for racing. People would pay a lot of money for one of his engines. He showed me how he trued cranks. The amazing thing is he did it by eye. If you use a piece of white paper against a black background as a straight edge and then rotate the crank on bearings when you look down over the crankshaft, you can see movement that measures as little as .0001" He had dial indicators as well but he prefered to use his eye. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Big End Replacement
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