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Old Jan 31, 2013, 04:49 PM
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Australia, SA, Burra
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Quote:
Originally Posted by elvill View Post
clarification

so the 4:1 is the stock pinion from the 8mm brushed motor? heat up pry off, heat up slide on, kinda thing?
4:1 is the gear ratio - motor spins 4 times : propeller shaft spins once

You need a 9t (t is for tooth) pinion to suit a 1mm shaft. Im not sure if the stock pinion would fit, and it will be tricky to remove from the brushed motor without a pinion puller. the mCPX 9t pinion should be a direct fit, or hobbyking sells pinions too (but they may be poor quality), heat it up and push it on. If it looks like it will be a loose fit use a bit of JB weld, CA, or locktite to hold it on

Quote:
Originally Posted by elvill View Post
clarification

Are the shaft sizes of 8mm brushed and 7.8mm brushless motors the same?
Brushed motor is 8.5mm and the BL is 8mm. Not entirely sure if the shafts are the same size though
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