I have a Tenshock F1 which is 700 MM. THe TFL Caulwell is 750 MM.
I recommend using a sliding battery tray. It is a far better way to dial in the ballance.
https://www.offshoreelectrics.com/pr...od=mbp-cnc4960
As for the motor, mine came with a Tenshock VZ-1530, 3100 KV motor, Diameter:29mm Length:48mm . It came with a 70 A ESC. The hull runs great. I mod the cooling for a in hull pickup, had good flow. The hull has more speed in it, but the motor and controller dont. I had it going about 40-45 mph. I smoked the controller last week. I was running a 36mm, 1.5 pitch prop. I got lucky, and it was only the controller and motor that went. The rest of the equipment is fine.
I don't recommend going over 3S on the motor. It cant really handel it and its easy for the current to spike, smoking your controller or worse. That motor is rated at 60K RPM, but that is with no load. 39K RPM is a the practical limit of these sorts of motors, until you jump to Neu, TP, or a larger jump to LMT motors.
If you want more speed, it would be better to go to a higher voltage system, with a lower KV motor. I plan on replacing my motor with something a little bigger, and in the 1700-1800 KV range. I will be running it on 6S, 2500 mAh.
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