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Old 11-01-2005, 06:36 PM   #1
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How do you balance the crank when you modified it.
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Old 11-01-2005, 08:53 PM   #2
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call rick at www.rbmods.net
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Old 11-01-2005, 09:45 PM   #3
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thank you for the interest in our modding and resizing of .12 engines
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Old 11-02-2005, 02:14 AM   #4
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Quote:
Originally Posted by Quietroit
How do you balance the crank when you modified it.
I've never done it, or heard how to do it, but I assume getting a prop balancer for a model airplane would be a good start, assuming you can get a way to center on the crank. Then, just drill a hole into the counter balance (the big counterweight that is opposite to the rod pin) until it rolls true. I know that's similar to how they balance full-size crankshafts.

Please, someone correct me if I'm horribly wrong.
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Old 11-02-2005, 03:23 AM   #5
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Quote:
Originally Posted by Aphinity
I've never done it, or heard how to do it, but I assume getting a prop balancer for a model airplane would be a good start, assuming you can get a way to center on the crank. Then, just drill a hole into the counter balance (the big counterweight that is opposite to the rod pin) until it rolls true. I know that's similar to how they balance full-size crankshafts.

Please, someone correct me if I'm horribly wrong.
You are horribly wrong

It won't work to make the crank rotate true by itself. It has to be done in connection with the conrod and piston, because that's the weight that the counterweight is countering...
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