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B44 gearing issues

B44 gearing issues

Old 12-25-2007, 07:40 PM
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Join Date: Jul 2007
Posts: 28

I wish I read this thread before I bought my motor/speedy and pinions for my B44! I normally race 1/8 nitro off road and sometimes 1/10 nitro onroad and so had no idea when it came to elec R/C
With the B44 I bought 3 matched sets of Intellect 4200mAh batt's, 1 times 15,16 and17t pinion gears and a Mamba Max ESC with CM36-s7700 combo
After assembling the car I took it to the local track(next door) for a test run only to discover the car itself is off the hook but the power was off the planet so I persavared(spelling?) untill all the batt's were flat then came home to see what you guys were doing to tame it down!

You live and learn alright! LOL lucky for me it's just a practice car

The Associated servo is the same as the AceRC DS1015 servo .108transit & 14.5kg torque @6v A very nice servo, a little power hungry but that will not be a problem in an Elec car!
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Old 12-25-2007, 11:05 PM
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Join Date: Dec 2007
Location: Austin
Posts: 33
Default low motor temps

I'm running a 20t pinion on the stock 84 spur in my new B44.
+ Novak 6.5 Brushless
+ Maxamps 5500 Lipos

I got 5500 MaH Lipos powering the GTB + Novak 6.5 brushless. At the end of a 10 minute romp through high grass (lots of resistance) the motor is just barely warm to the touch (100 - 110 deg F). (same with the batts.... still cool after 10 minutes of HEAVY load, and had another 40 minutes of peak left

The Novak manual states you should only adjust your gearing to the temperature of the motor ( I assume they weren't taking into account 55 minutes of full out run time on 5500 Mah Lipos... lol)... But the recommended temp range is 160 - 170 F. I'm not using a thermometer, but I'd be hard pressed to say the motor is getting much hotter than 105 F (in texas on an 85 deg humid day).

The car is plenty too fast for me to drive anywhere over about 60% throttle most of the time (except in the tall grass where I run at 70-100%) to try to stress the motor and batts a little.

Recommended gearing should be 20/21p - 84spur. Should I gear the pinion up higher to reach the recommended operating temps, or just be glad I'm getting good efficiency from my current set up?

thanks. I am a n00b again after 20 years out of the sport.

-- font9a
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Old 12-26-2007, 11:29 AM
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Posts: 37

I drive on an indoor 100 x 40 or so track too,

10.5 (for 19t 4x4 class) 24t pinion

7.5 20t pinion.

Neither is terribly fast on the back straight but i can cut under and accelerate really fast.
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Old 12-26-2007, 02:14 PM
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i ran the 3.5r in my t3..
waaaayyyyyy too much motor..
can you say backflips on command.. lol
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Old 06-27-2010, 10:38 PM
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Posts: 17

Can you put a mamba max pro 7700kv in this?
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