I guess I might want to specify my conundrum. Given the retardation in speed on a downhill roll, should I be worried more about rolling resistance or aerodynamics? I'm guessing that weight reduction (and even rotational weight) won't have much effect.
The problem is, I know there are plenty of modifications that I can do for aerodynamics, but I'm not so sure of what I could do to work on my rolling resistance (or whether I should even try). Outside of switching to lighter gear and transmission oil, I'm not sure what else.
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