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Old 02-12-2014, 01:32 PM
  #907  
sosidge
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Join Date: Dec 2001
Location: Bristol, UK
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Originally Posted by skypilot View Post
Nick. Will do when I get off work.

Mike. think of the size of the pulleys on the spur shaft. Is it easier to spin with a 100t spur or 80t spur. Now think about braking.

Remember when the drive train upgrade for a xray was changing from a 1.8 internal ratio to 1.9 or 2.0. Same principle. ..
I'm afraid your faith is misplaced. Running an oversized spur makes no difference to the car. Running the car without any middle brace on the top deck will.

Large pulleys were introduced to decrease belt wrap and improve efficiency. The idea that a different internal ratio is intrinsically faster is all marketing hype.
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