T-maxx Direct Drive Conversion Idea

[Serum]

Mechanical brakes are the big catch. I would use slightly larger batteries, i've tested them on a 700 watts peakpower. so 2 of them in series are good to 1400 watts. That's not enough IMO.

[BL_RV0]

what batteries would you recommend that i can get both for under 150?

[sikeston34m]

Originally Posted by Serum

Mechanical brakes are the big catch. I would use slightly larger batteries, i've tested them on a 700 watts peakpower. so 2 of them in series are good to 1400 watts. That's not enough IMO.

I have to aggree with Serum on this one.

2200mah at 20C is only 44 amps continous, 66 amp burst.

It's going to spike quite a bit on take off.

[BL_RV0]

ok, ill use different batts. but whay about brakes?

[BL_RV0]

if this is any help
Differential Ratio: 2.8461538461538462
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 1
Pinion Tooth Count: 1
Total Voltage: 29.6
Motor KV: 270
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 70
Motor coil Ω: 0
Spur/Pinion Ratio: 1 : 1
Total Ratio: 2.84615 : 1
Tire Circumference (inches): 18.06 inches (458.83 mm)
Total Motor Speed: 7992 RPM
Vehicle Speed: 48.03 mph (77.16 km/h)
Effective Speed Rate: 1.62 mph/V (2.61 kmh/V)
Estimated Adjusted Speed: 45 mph (72 km/h) - 6% loss
Effective KV Value: 270
Motor Torque: 1.83 ft-lbs
Final Torque: 5.2 ft-lbs
Final Power: 2072 watts (2.8 HP)

[sikeston34m]

The numbers look good. But...........there's always a but. LOL

That's one huge gear ratio. 2.85:1

You've chosen a lower kv outrunner. A big one, and that should help. Running it on 8S will get your top speed up to the really fun range.

You need an ESC with a great startup routine. I don't have any experience with that one. Metalman does I believe.

On the brakes, this is where you have to be creative. On my Revo, I had considered moving the mechanical brake to the diff pinion. There is a kit for the Revo that allows for this. I wonder if there is something like this available for the T maxx?

[BL_RV0]

well, i suppose i could spend <$200 on a esc, if it measn brakes or no brakes

[BL_RV0]

i suppose i could use a mgm 8024?