My Neu Maxx is almost done

[mkrusedc]

I ran my Neu Maxx for the first time today! Well not the first time but let me start at the beginning. After constantly repairing a broken RC10 T3 with a 2s LiPo MM 7700 Kv, I bought an E- Maxx. I thought with all the upgrades and after market parts available I shoud be able to have a great brushless basher. So first came the upgrades. I tried to keep it as light and strong as I could.

Upgrades:
Castle Mamba Max esc
Two 7-cell, matched and zapped NiMh packs from SPC and 2 TrakPower 2S1P 4900 mAh LiPo battery packs
PowerStroke coil over shocks
12 Associated slipper balls with heavey duty spring
Traxxas wheelie bar
RPM suspension arms
RPM axle carriers
Traxxas 3.3 turnbuckles
Traxxas 3.3 drive shafts
Revo wheels
RC-Monster steel dog bone center shafts
Traxxas 3.3 gray bulkheads
Power Pole connectors
Futaba S3305 MG steering servo
Gorilla Max single speed transmission
RPM shock towers and body posts
RC-Monster steel idler
FLM aluminum diff cups with modified gear and 3 mm screws

Next I had to find a motor. I wanted all the speed that I was used to with my stadium truck. After searching forums and asking questions Mike suggested a Neu 1515/1y and a UBEC.

Then the fun started. The Neu is so big that it hits the transmission, so you can only use larger spurs and pinions. If not the gears would not mesh. The problem was the MM controller would cog with the 4 pole Neu if the gears were too large. I tried anyway. With Brian's gear calculator I figuered out the smallest gears that would mesh. With a 52t mod1 Associated gear and a 17t pinion I thought I was read to go. I put 14 cells in and....nothing. I was over voltage. Apparently Castle had changed the fet board and my MM would no longer run on 14 cells. I tried only 7 cells and it actually rolled, but cogged like crazy.

Which brings me to today. I got my bother to solder up some bullet connectors dropped in two TrakPower 2s lipos and She rolled!




Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.7222222222222223
Spur Tooth Count: 52
Pinion Tooth Count: 17
Total Voltage: 14.8
Motor KV: 2200
Tire Diameter (inches): 6
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.006
Spur/Pinion Ratio: 3.06 : 1
Total Ratio: 14.99346 : 1
Tire Circumference (inches): 18.85 inches (478.78mm)
Total Motor Speed: 32560 RPM
Vehicle Speed: 38.76 MPH (62.27km/h)
Effective Speed Rate: 2.62mph/V (4.21kmh/V)
Effective KV Value: 2200

I hope to add a Strobe or Kippster slipper, lighter wheels and a MGM speed controller because I hate the cogging.

Thanks to everyone in this forum for all the advice and help.