Kokam 3200 SHD Lipo

[lipomax]

I've finally got a chance to run those Kokams in my TC4 last night. I've tried all sorts of combinations of motors and gearing. Tried the Twist 4200, C40 12s, basic 2100. Tried different ratios and different voltages. For my track (small indoor carpet track), I find that the ideal setup is C40 12s, geared 10:1 FDR using rubber tires Sorex 20. Funny thing is that 14.8 volts had too much power an dwas uncontrollabe so 11.1 volts was the better setup. Under 11.1, the max speed is only 30 mph, but the stock guys are running about high 20's and that top speed is only reached ONCE on the back straightaway. Motor RPM is almost 40,000. Comparing the Polyquest 3100 11.1 volt pack which weighs only 7 ounces vs. the Kokam 3200 11.1 which is 10 ounces, they were pretty much idential in performance. Actually, the Polyquest being lighter, transitioned better. So, for small indoor carpet tracks gearing a "slow" motor, I don't think you need 20C high discharge packs. The higher discharge packs weigh more for the same energy. I prefer the polyquest in my TC4.

After 20-25 minutes of NONSTOP running, motor temp was at 160 degrees F, controller 130 and batteries were at 105. That's pretty good running temps. I ran a total of 2 3200 packs, 1 3100 pack, and 1 4s3500 pack. I think 4s is better for larger outdoor tracks and 3s better for smaller indoor tracks.

When I get my Emaxx fixed (steering), I'll post actual tests and graphs between the batteries.