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Old 18-08-2013
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Default dex210 pinion gear help

Hi, I am building a 210 and am wondering what number of teeth pinion I should get? Also should I use aluminium or steel? I will be running on a medium sized astro/grass track.
Thanks for any help, very useful for a begginer.
Ed.
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Old 18-08-2013
mattr mattr is offline
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What motor/spur?
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Old 18-08-2013
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13.5t motor, standard 87t spur.
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Old 19-08-2013
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http://www.petitrc.com/setup/durango..._GearChart.pdf

http://durangofansite.com/gearing.html

it works out about a 29/30/31 but you can't get anything more than at max a 26 in there. You will have to look at getting a smaller spur, about a 78-81 ish then a 25-30 will fit, or look at getting a quicker motor depending on the esc you have
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Old 19-08-2013
mattr mattr is offline
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Stock gearing on the RTR (with a 13.5t motor) is 29/81, so as onekiwi says, quite possibly time for a new spur! If you are ordering a pinion anyway, its not going to hurt to order a spur too.

FWIW, i use hardened aluminium and steel pinions fairly interchangeably, the steel ones last longer. But seem to wear the spur quicker (especially if you get dirt in there).

Depends if you are frequent pinion/spur swapper or not as to which you go for.
Neither are *bad*. Just different.
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Old 19-08-2013
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Thanks for all the help. i think its best i get a smaller spur and wait it out until i can get a bigger motor.
Ed
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