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Old 03-05-2007 | 12:19 AM
  #1462  
mrasmm
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From: Sometown, Northern Utah
Default RE: E-FLITE BLADE CP PRO

http://www.horizonhobby.com/Products...%20Accessories
has a good description of what pinions are for what. Keep in mind this is for the CP, not the pro

8T pinion - This motor and pinion deliver extra-long flight times when using 3-cell LiPo packs and flat bottom main blades.

9T pinion - Same motor and pinion included with the Aerobatic Enhancement Kit. Recommended for use with 3-cell Li-Po packs.

10T pinion - Stock motor/pinion. Best for 8 cell NiMH and flat bottom blades.

11t pinion - This motor and pinion are for use with 2-cell 730-1320mAh Li-Po packs and flat bottom main blades.

I think on the pro the stock is 9T, or alteast that is what mine has

The smaller the T number on the pinion, the lower the head speed if everything else stays the same, and visa versa