Thinking of a new truck..

[RC-Monster Mike]

The 11L would be a little easier on the batteries and would for sure be plenty powerful. I just don't happen to stock the 11L! The difference wouldn't be huge, but the L would give a slightly slower, longer run time.

[Rtsbasic]

Ahh I see...what about the 10L? Would that be a bit easier on the batteries than the 7XL still? Slightly higher kv, but less amp draw still. I don't know how the resistance in the motor comes into play so don't know which one would be better by the numbers.

How many watts of power do you think a 10L on 18 cells might put out? Like how Lehner have graphs showing efficiency and power output, is there anything similar for Feigao's?

[RC-Monster Mike]

The 10L would be very similar to the 7xl. Perhaps a little faster with similar runtime. 18 cells is on the high side of the rpms for the 10L (though it would certainly handle it). I am unaware of any graphs available for the Feigao motors, but for sure the system could put out well over 2000 watts of power on hard acceleration (short bursts).

[Rtsbasic]

I read it takes about 1000w to hit 50mph, but a lot more power to get much faster than that..my current system in my T3 is good for about 500-600w of power I think with its current setup..but its a lot lighter.

I take it the 10L wouldn't be safe to run on 20 cells then? For 20 I know really it comes down to an 11L or as you say the 7XL but 20 with a 10L and gearing down a bit would either destroy the motor or get more runtime?

[RC-Monster Mike]

The 10L would run for a while on 20 cells. It just isn't ideal for this motor is all (16 cells is a good place to be with the 10L, and 18 cells is a slightly high cell count, but could be done). 20 cells is pushing the rpms into the 60k range, which isn't efficient or recommended on a daily basis. The 10L could run on 18 cells with proper gearing, but 16 is a better cell count for this motor.

[Rtsbasic]

Hmm..don't want to drop to less than 18 cells..start loosing runtime.

If I brought a 10L from you and ran it on 18 cells on a regular basis (with the necessary precautions taken to avoid overheating, and geared correctly) would the motor be warrantied if it was to go? I have a 540 6s motor I rev just as much as the 10L would and not a problem with it, but I don't know how it being a longer can would affect its top rpm.

Thanks for all the info and suggestions, at least now I have a fairly clear idea where to go with motor/esc/batteries.

[RC-Monster Mike]

There would be no way of me knowing what you put the motor through. If you bought the 10L and it failed, I would replace it, unless there were obvious signs of abuse. The motors can handle the rpms. The bearings are the main reason for the rpm limitation. And yes, as the cells go down, so does the potetntial runtime. 18 3800 cells would give a very nice runtime and the power would be pretty insane. If it were me, I would dial the power out on the radio to make it more driveable (It will be a brute!).

[Serum]

Is this your first brushless car? (nothing wrong with 18 cells, it just is very, very powerfull ;) )

[Rtsbasic]

Serum, I had a brushless mini-t (mamba 8000kv) I ran 3s lipo in, and currently have a brushless touring car I'm stuffing 12 cells into and a T3 I run 7 cells in with a brushless setup. I'm not new to the game, and looking for more power than my T3 and more runtime, hence 18 cells, very very powerful as you say :) Thanks for the warning though.

Thats cool with the warranty, of course you have no way to tell what I put it through but if the motors abused you'd probably be able to tell pretty easy.

Would have to be pretty light with the throttle most of the time I would think..but I would rather be light/dial out throttle on tx but have power when I want it, than not have enough power when I need it. And when the throttles being dialed out to make it controllable runtime goes up a bit.

Besides, I would like to make a mess of my LHS owner's GS Storm buggy on the track, in a straight line that cars mad, radar'd it over 70mph, so won't be keeping up with that racing accross a field but in a track maybe.