What gearing for my brushless RC8T
 

hey guys im starting into my build tonight and was setting up the motor in it. im pretty new to electric so i figured i would ask the pros. the roller came with a 54t spur. should i switch that out or leave it? what pinion would go with it if i did leave it. top end isnt huge deal to me im just looking for a nice cool runner. i am going to be running 4s 5400mah packs with a 2200kv tork motor from a flux, as well as a mamba (flux) ESC. any suggestions will be greatly appreciated and i will post up photos as i go.:yipi:

You can leave the 54T in it if you wan to, I don't know if AE has a tall enough plastic to match that. The steel gear will work fine, just the plastic one will b quieter and be a somewhat sacrificial gear if needed.
This chart will help select the proper pinion for your application,

http://scriptasylum.com/rc_speed/_top_speed.html

Gear 40mph tops and it should stay nice and cool.
I'm sure some fellas who also own the RC8T will add to this, Enjoy !

hey very cool chart, thanks for that. so according to that and the 40mph rule would 15 pinion and 54t be fine?
Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 54
Pinion Tooth Count: 15
Total Voltage: 14.8
Motor KV: 2200
Tire Diameter (inches): 5.65
Tire Ballooning (inches): .2
Motor Current Draw: 0
Motor Coil Resistance: 0.006
Spur/Pinion Ratio: 3.6 : 1
Total Ratio: 15.48 : 1
Tire Circumference (inches): 19.01 inches (482.77 mm)
Rollout: 1.23:1
Total Motor Speed: 32560 RPM
Vehicle Speed: 37.86 mph (60.81 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...

It all looks good but, The balloning tires at .2 may not be enough ?
What kind of tires you running, If they are the soft racing pin type you may want to consider .50 It MAY make a difference, Keep it in mind at the least.
Keep a close eye on your temps and if everything stays under 140-150 or so your golden.

Our fellow Member/Mod "BrianG" is the gentleman who's responsible for the wonderful chart.

tires will be bowties, crime fighters, and holeshots.
here is a little peak at the project. I'll update as i go. Any more suggestions that have been tested would be great to hear. You guys truly are the brushless masters!

I started with this
http://i54.photobucket.com/albums/g1...e/DSCF1882.jpg
http://i54.photobucket.com/albums/g1...e/DSCF1884.jpg
so far ive been mostly ordering parts and getting it ready to go. i got the motor mocked in tonight.
http://carphotos.cardomain.com/ride_...0297_large.jpg
seems to fit well, with nice clearance using the rc monster mount.
http://carphotos.cardomain.com/ride_...0299_large.jpg
So here is the start to it guys. ill keep you posted along the way.

If you want plastic spurs, AE makes 46t, 48t and 50t.

ok thanks for the tip. is the only downfall to steel drivetrain noise? I think ill try what i have right off the bat and work from there.

I like the smaller spur gears(I use a 46t Slipperential in my RC8T). The smaller spur requires a smaller pinion - smaller spur and pinion moves the motor weight towards the chassis center line, and allows the battery weight to also be moved closer to the chassis center line. Centralized weight allows faster transitional handling and imprves the chassis' ability to rotate. :)

Yes the steel gears make a bit more noise, they will wear longer too. Of course a steel pinion on a plastic spur should last forever, just keep replacing the spur as needed. I like the quiet of the plastic spurs, my old buggy is nearly silent under low throttle.

great advice here guys. mike what pinion are you running with your set up on the 46t? what would you recommend for mine with the motor and lipos im running? again thanks for the feedback guys. and bdebde i will look into plastics, thanks!