hot controller/warm motor/ cold batts

[t-maxxracer32]

40? wtf am i doing wrong lol i put in all my info and im getting 26mph haha

Differential Ratio: 3.25
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 14
Total Voltage: 7.4
Motor KV: 5700
Tire Diameter (inches): 2.2
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 3.29 : 1
Total Ratio: 10.67857 : 1
Tire Circumference (inches): 6.91 inches (175.55mm)
Total Motor Speed: 42180 RPM
Vehicle Speed: 25.85 MPH (41.53km/h)
Effective Speed Rate: 3.49mph/V (5.61kmh/V)
Effective KV Value: 5700
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...

[skellyo]

Originally Posted by t-maxxracer32

40? wtf am i doing wrong lol i put in all my info and im getting 26mph haha

Watch here young grashoppa...

Differential Ratio: 3.25
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 14
Total Voltage: 7.4
Motor KV: 5700

All good to this point.

Tire Diameter (inches): 2.2

NOT GOOD!
The tires are ~3.5" in diameter. 2.2" is the wheel diameter.

Change that and you'll see the difference in the calculator.

Differential Ratio: 3.25
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 14
Total Voltage: 7.4
Motor KV: 5700
Tire Diameter (inches): 3.5
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 3.29 : 1
Total Ratio: 10.67857 : 1
Tire Circumference (inches): 11 inches (279.29mm)
Total Motor Speed: 42180 RPM
Vehicle Speed: 41.13 MPH (66.07km/h)
Effective Speed Rate: 5.56mph/V (8.93kmh/V)
Effective KV Value: 5700
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...

[lincpimp]

You may also find that the little 5700 will have trouble with the crt.5. Even though it is small it is still heavy and has alot of traction so it can load the motor more than a 2wd can. I will stand by my testing of the mm motors. I have had every one of them and found that the feigao 380c s can motors out performed the mm motors. I had a 5700 in a pede and it got too hot, a 7700 in an onroad car, very hot and a 6900 in a LS10 conversion that was also very hot. Even the feigao 540 s can motors will outperform a mm motor (and the velineon motor). i run a 10l and a 9l feigao in my crt on 3s lipo and the temps stay in the 150-160 range. MM esc stays at about 130 and the batts are at 100-110. I have even run the 10l in my LS10 on 4s lipo with good results. I would gear that 5700 down to about 35 mph on the calculator and it should be fine. Looks like you have some good lipos, they can handle a hot system without heating up themselves. True RC lipos look to be a great deal in the lower priced lipo war.