ktmusa

im getting ready to put a 10t chackpoint and need some help gearing it i have a 84 and a 81 tooth spur any help would help.

ktmusa

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RCBLUE

iTrader: (7)

How big and what type of track?

ktmusa

im running on a big track that is hard packed.

ktmusa

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RC Dad

iTrader: (26)

My kid's running a Cobalt 9 double in his Academy SBV2, and last weekend the 16t pinion was a little short on an 80T spur. Our track is built for 1/8 scales so is pretty big for electrics.
I would suggest either a 17 or 18T pinion on your 81 spur with a 10T. I assume overall gearing is similar between brands so that should put you in the ballpark of crazy fast on an average track. My experience says if its a single wind, go 1-2 teeth lower on the pinion than with a double wind.

Terry M

iTrader: (24)

I would try a 19 pinion with your 84 spur...like the manual calls for.

I run a 5.5 brushless in mine 18/84...perfect!

kdub

I would say start with an 19 and then go higher if needed.

What up?

iTrader: (14)

is that gearing on an 1/8 scale track?

ktmusa

its a some what big indoor track OCRC raceway

Johnny_S.

OCRC is going to be indoor clay and its probably closer to a medium/average sized track (100' straight). The standard gearing should be fine and at the very least be very much in the ball park.

ktmusa

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RCBLUE

iTrader: (7)

If it's a medium sized indoor clay track, I would say 18/81. That's what I would run in my BJ4WE which is basically the exact same car. Any larger gearing you run the risk of getting the motor soo hot that it will come unsoldered. If it is the aluminum endbell checkpoint then it's not so much of a problem, but plastic, be careful with gearing.

ktmusa

ok i got an idea on the gearing what tires would you guys say to run on socal dirt which is clay i always used pink step pins or holeshots?

ktmusa

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