Thread: xx4 and xxx cr gear ratio for brushless
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Old 09-02-2007
_sleigh_ _sleigh_ is offline
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You might find that it's yellow(ish) in colour, then it's a Kelvar spur. All sizes of Kelvar spurs are yellow(ish) in colour.

The non Kelvar are as follows (i think)

Purple - 84t
Yellow - 82t
White - 78t
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