which novak brushless system - RC-Monster Forums

James · **which novak brushless system -** 07.26.2006, 04:28 PM

I wan to get a hobbico pro fisherman outboard boat, but which novak system shold i get for it? If the motor gets a little wet is it going to be ruined? Should i use a mamba max system?

cart213 · 07.26.2006, 06:19 PM

I would get an Mtroniks controller, because they are waterproof, and I would put it with a Feigao 380c motor. Getting the motor a little wet shouldn't ruin it, as long as you dry it off so that it doesn't rust.

jhautz · 07.26.2006, 06:46 PM

The novak brushless motors are sensored. They are more sensitive to water than the sensorless motors. If you look at the back of the motor there is a circut board and this can be shorted out by water just like any other board. For a boat Id go with a sensorless setup.

James · 07.27.2006, 10:17 AM

I want something simple, and ican get as a package, because i hated the last brushless system i had. and i only want to run 6 cells

jhautz · 07.27.2006, 10:39 AM

The mamba maxx is sensorless.

If you plan on running 6 cells only all the time, go w/ the 7700.

BrianG · 07.27.2006, 10:59 AM

Wouldn't that be a little too high rpm at 55,000? I would say the 5700 would be a better choice, and would allow a little higher gearing (because of the increased torque) if top speed wasn't enough. Just my $0.02...

jhautz · 07.27.2006, 01:39 PM

Quote:

Originally Posted by BrianG

Wouldn't that be a little too high rpm at 55,000?

I have to assume that CastleCreations can do that math as well. The motor system is specified for a minumum of 6 cells so I would expect that it would run with no issuse at its lowest rated cell count.

Either will work, its just a matter of how you want to st up your system.

If it were mine personally I would probably go for the lower kv setup myself just so I could have some flexibility with the cell counts that I run. But, he stated that he will run 6 cell only so in that case I would just go with the highest kv. Hes just looking for plug it in and run it. No tweeking.

BP-Revo · 07.28.2006, 02:49 AM

Well, in a boat, you have to factor in water resistance and the prop and stuff.

If you are running a small prop, you want more RPM, but if you have too much RPM on a small prop, then it sucks air and you lose power because its moving too much in a small area.

If you are running a large prop, you want a little less RPM, but too little causes slow top speed.

So, you want to find the perfect balance between a prop and motor.

Also, if you want top speed, you want a motor with more KV. They generally have more top end for higher top speed. You could gear up a low KV motor, but that usually results in less acceleration than a low KV motor geared properly for the same top speed. Then again, a high KV motor has less run time, because its more powerful.

So, my suggestion is run a medium sized prop and get a medium KV motor, thats probably the best setup, as a prop spinning at high RPM gives better top speed than a large prop at lower RPM.