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Old 03-25-11 | 01:15 PM
  #15  
prathmann
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Joined: Nov 2008
Posts: 7,239
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From: Bay Area, Calif.
I agree with furballi and meanwhile that weight of the wheels isn't going to play any significant factor in your commute time - and the moment of inertia will be even less significant. The importance of 'rotating weight' has been blown way out of proportion. Yes, accelerating a rim requires twice the energy of accelerating the same weight on the frame, but a cyclist spends only a tiny amount of his overall energy expenditure in actually accelerating. Almost all of the energy goes into overcoming air resistance and gravity (assuming some hills).

If you still want the moment of inertia calculated based on the component weights, let use know. But first could you check over the weights you gave - e.g. the tire weight of 175g seems very low for an Armadillo and the spoke weight of 24g is too high for a single spoke but too low for the set of 32. Are you using aluminum nipples? Not what I'd recommend for a commuting bike in Portland.
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