new to fourm, pics of finished build.

[lincpimp]

Originally Posted by rcjmaxx

The KV rateings on the HV motors are pretty high (3000kv and higher) arent these numbers a bit high for a monster truck? Is that why a Stampede and such lightweight vehicles are better suited for this setup?

Well, there are 2 ways to get the job done. Considering that most MTs are geared for around 40mph, you can run a lower kv motor and gear it up for that speed, or run a higher kv motor and gear it down. This is assuming that you run the same voltage to each motor and they are geared for the same top speed.

The novak motors have a smaller diameter rotor than a feigao xl or neu. Thus they lack the torque to pull higher gearing. So they are higher kv and spin faster, and can use lower gearing in order to achieve similar power levels.

The novak motors are much more effecient than a feigao, so the 35k rpm limit does not really apply to them. Whether it is better to run a higher kv motor with a smaller rotor fast or a motor with a larger diamter rotor slower remains to be seen. We generally aim for 35-40k rpm max due to the fact that most nitro motors run a bit slower than that, and factory gearing can be used. Makes it easier for people who are less expierenced, and almost gaurantees a cool running setup.

Now the neu motors have large rotors and are built well enough to survive high rpms while still retaining decent effecientcy. So they can produce more power than the novak.

I would say that a novak hv motor is about as good as a 1512 size motor, such as the 60mm medusa. I still think a 3000kv 60mm medusa will outperform a novak 6.5hv though...

[stompingpede]

this motor on 3s is perfect. i could gear it for 70mph+ and it will still run cool with loads of tourqe. im not done with shocks yet, found some 7lb springs i want fot the rear. oh i can run 5s lipo, but THAT would be uncontrollable... no vids yet, just finised the build. and ill time my run time today...