Choice Of Motor For Brushless Jato

[BrianG]

Wow, the 8XL is a VERY big motor for that size truck! :dft002: You won't be wanting for torque, that's for sure! You'll probably have to gear it quite high to load the motor enough so it won't overheat. I'm using a 22T pinion and it runs nice and cool with an "S" size motor.

[Finnster]

Originally Posted by david lamontagn

Thank you for all your repply. But i'll wait little time before order a new motor.
To the place, i'll try my Feigao 540C 8XL that i've on my LSP conversion and put it in this Jato and gear it with a 26 pinion, and change the original tires for the moab, they have 1 inch more on total diameter than standard 2.2 stadium truck tire.

So considering that the rpm/volt of the 8XL is about 2083, on 14.8 volt, with the single speed convertion, gear 54/26, and with the extra inches tires balloning, i would hit about 60m/h + if i put all this number on the r/c calculator.

An 8XL?!:030:

I weep for your tranny. Are you going to be able to find 5mm pinions in that size? If you get it worked out, please get a vid :P

[squeeforever]

I wouldn't even bother. Do the smart thing and get a Lehner XL3100 and it should be nice and happy...

[Scoob]

Originally Posted by BrianG

I don't know about that. I get almost 50mph on only 2s and it doesn't even break a sweat (both ESC and motor temps are lukewarm at worst). On 3s, it should easily get to ~60mph.

Wow, I get like 33-34 in a T4 on 2s with the 4600. My 5700 will hit 45 if I overgear to the point that it overheats quickly but on normal gearing does about 37-39. You must be running a 2-speed? If that's the case, people who say a 2-speed is useless in an electric are crazy.:003: There is no way I could gear my 4600 for that kind of speed (if it could even pull that from a dead stop) without overheating in a minute or less. That is fed by an 8000 2s lipo. I could only get 45 out of it on a 6000 3s. I use it to race on tight, small courses and the 5700 on larger ones.:dft009:

[BrianG]

Actually, I'm running the single speed tranny so I can have motor brake and reverse. The single speed ratio is just about in the middle of first and second ratio-wise. And I am one of those who think 2-speeds are useless. :) But, I am running the gearing a little on the high side, but the lower kv motors tend to be a little more forgiving with that from what I've seen. Then again, I don't run it at max speed for a long time since I tend to run out of room or control. :)

[Scoob]

Well that's awesome man. Cool to see a BL jato. I'd guess you could match the 3.3 by simply dropping in a 3s. There is nothing I like more than showing up nitros.:005:

[BrianG]

LOL. Yeah, me too.

I've 22, 24 and 26 pinion in 5mm shaft.