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10-13-2005 03:24 PM  12 years agoPost 1
scoot

rrNovice

Hampshire, UK

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What pinion do you recommend for a XL CDE with 335mm woodies, motor is a medusa 2800 and using 4s Lipo. Aiming for a HS of around 2600-2800.

Thanks.

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10-13-2005 04:28 PM  12 years agoPost 2
CACTUSJACK (RIP)

rrApprentice

State of Confusion

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Do the math:

2800kv= 2800rpm per volt
4s pack=14.8v
Multiply rpm times volts
Motor turns 41440rpm
Divide by gear ratio
10 tooth pinion, 150 tooth main=15:1.......2762 head speed
11 tooth pinion, 150 tooth main=13.6:1.....3047 head speed
9 tooth pinion, 150 tooth main=16.6:1........2496 head speed

X5X7 Animum Vestrum Negotium Agatis

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