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lincpimp · 12.25.2007, 01:26 PM

Actually, the redcat setup can't be pulling many amps, my battery is a 2500mah 18c 5s pack and it did not even get warm. The redcat is much lighter than an emaxx, but the final gearing (inc tires) will be very similar (slightly lower in the emaxx) so we will see how it does. Wondering if the 4120 would be a better motor? You have more outrunner experience than I so I will see how your experiments go. I will say that maybe 5s will be better with my lower kv motor. Seems to be the general feeling that lower kv and higher voltage yields better results. I do have the cooler now, just need to put it on!

Here is what I feel would be the best setup for my motor, but will need to be tested.

Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.16
Spur Tooth Count: 40
Pinion Tooth Count: 20
Total Voltage: 18.5
Motor KV: 760
Tire Diameter (inches): 5.75
Spur/Pinion Ratio: 2 : 1
Total Ratio: 6.60308 : 1
Tire Circumference (inches): 18.06 inches (458.83mm)
Total Motor Speed: 14060 RPM
Vehicle Speed: 36.42 MPH (58.51km/h)

Maybe put a 22t pinion on it, and aim for around 40mph. Using a 2 speed will allow for higher gearing and top speed, and motor rpms look good too, it may work!

	(#47)
lincpimp Check out my huge box! Offline Posts: 11,935 Join Date: Aug 2007 Location: Slidell, LA	12.25.2007, 01:26 PM Actually, the redcat setup can't be pulling many amps, my battery is a 2500mah 18c 5s pack and it did not even get warm. The redcat is much lighter than an emaxx, but the final gearing (inc tires) will be very similar (slightly lower in the emaxx) so we will see how it does. Wondering if the 4120 would be a better motor? You have more outrunner experience than I so I will see how your experiments go. I will say that maybe 5s will be better with my lower kv motor. Seems to be the general feeling that lower kv and higher voltage yields better results. I do have the cooler now, just need to put it on! Here is what I feel would be the best setup for my motor, but will need to be tested. Differential Ratio: 2.8461538461538462 Transmission Ratio: 1.16 Spur Tooth Count: 40 Pinion Tooth Count: 20 Total Voltage: 18.5 Motor KV: 760 Tire Diameter (inches): 5.75 Spur/Pinion Ratio: 2 : 1 Total Ratio: 6.60308 : 1 Tire Circumference (inches): 18.06 inches (458.83mm) Total Motor Speed: 14060 RPM Vehicle Speed: 36.42 MPH (58.51km/h) Maybe put a 22t pinion on it, and aim for around 40mph. Using a 2 speed will allow for higher gearing and top speed, and motor rpms look good too, it may work! Alot of Savage parts for sale!!!