RCCrawler Forums

c0bra · 07-03-2011, 07:12 PM

i picked up a traxxas slash 4x4 ultimate a few weeks ago and decided to put in a 5700kv mamba maxx pro system in it. for the pinion i used the optional one that came with the slash.
when i took it out the other day it was a monster on the grass and quick on the streat but the brakes sucked. a few minutes later the motor took a dump and over heated.
i know i need to get a new motor for it but does anyone have an idea to keep the temp down on it. i know the esc can have a sensored motor but would that help at all

c0bra · 07-03-2011, 07:14 PM

oh and heres a pic with my ax10 swx thats not finished

its stock except for upgraded front shocks and i lowered ot because its mostly used on the road

SOMD_BASHER · 07-04-2011, 12:35 AM

u may laugh but integy has a motor heat sink with a fan i use on my 9000kv mamba castle is also offering a motor heat sink with a fan also

D_Frawg · 07-04-2011, 07:46 PM

You need a lower KV rating that's why they specifically designed a motor and esc combo for that truck . Because all others kept burnin up. If you dont want what was designed for it then try a 1500-2000 KV outrunner plane motor or a 21.5 class is 1300-1500kv depending on brands they should have the torque to gear up an get a decent speed. Without too much heat your always safer with a Slower motor and higher voltage.

c0bra · 07-04-2011, 08:25 PM

ok ill try getting the heat sink with a fan for the motor but if i cant get it ill just get the mamba maxx pro short course edition

TURTLE · 07-04-2011, 10:30 PM

Quote:

Originally Posted by c0bra

ok ill try getting the heat sink with a fan for the motor but if i cant get it ill just get the mamba maxx pro short course edition

Just don't gear it too high.

Also you are better off running it on 2 cell rather then 3, it helps keep the temp down.

SOMD_BASHER · 07-05-2011, 12:55 AM

i was running a 2s with a 23t pinion and 86t spur i was hitting 200 degrees until i put the integy heat sink with the fan now im running low 100s

tasop7 · 07-06-2011, 11:59 PM

I hear nothing but good things about the new 4-pole motors. The 3800kv seems to go instantly when sold on other forums. Good torque and lots of speed. But yeah, heat sink and fan are cheap insurance to keep the motor cool.

Castle's site specifically says not to use the 5700kv on the slash 4x4.

squatch71 · 07-08-2011, 05:54 PM

had the same problem in my 2wd slash, toasted the 5700kV motor, sent it to Castle, did a motor swap, upgraded to a 4 pole 5700kV and geared down on the pinion and geared up on spur...still stupid fast and harder to control on 3S.

07-03-2011, 07:12 PM	#1
c0bra RCC Addict Join Date: Mar 2011 Location: easton Posts: 1,399	overheated castle i picked up a traxxas slash 4x4 ultimate a few weeks ago and decided to put in a 5700kv mamba maxx pro system in it. for the pinion i used the optional one that came with the slash. when i took it out the other day it was a monster on the grass and quick on the streat but the brakes sucked. a few minutes later the motor took a dump and over heated. i know i need to get a new motor for it but does anyone have an idea to keep the temp down on it. i know the esc can have a sensored motor but would that help at all

07-03-2011, 07:14 PM	#2
c0bra RCC Addict Join Date: Mar 2011 Location: easton Posts: 1,399	oh and heres a pic with my ax10 swx thats not finished its stock except for upgraded front shocks and i lowered ot because its mostly used on the road

07-04-2011, 12:35 AM	#3
SOMD_BASHER Pebble Pounder Join Date: Nov 2010 Location: St.Leonard, Md. Posts: 97	u may laugh but integy has a motor heat sink with a fan i use on my 9000kv mamba castle is also offering a motor heat sink with a fan also

07-04-2011, 07:46 PM	#4
D_Frawg Rock Stacker Join Date: May 2007 Location: Fort Payne Posts: 92	You need a lower KV rating that's why they specifically designed a motor and esc combo for that truck . Because all others kept burnin up. If you dont want what was designed for it then try a 1500-2000 KV outrunner plane motor or a 21.5 class is 1300-1500kv depending on brands they should have the torque to gear up an get a decent speed. Without too much heat your always safer with a Slower motor and higher voltage.

07-04-2011, 08:25 PM	#5
c0bra RCC Addict Join Date: Mar 2011 Location: easton Posts: 1,399	ok ill try getting the heat sink with a fan for the motor but if i cant get it ill just get the mamba maxx pro short course edition

07-05-2011, 12:55 AM	#7
SOMD_BASHER Pebble Pounder Join Date: Nov 2010 Location: St.Leonard, Md. Posts: 97	i was running a 2s with a 23t pinion and 86t spur i was hitting 200 degrees until i put the integy heat sink with the fan now im running low 100s

07-06-2011, 11:59 PM	#8
tasop7 Newbie Join Date: Jul 2011 Location: Chicago Suburbs Posts: 0	I hear nothing but good things about the new 4-pole motors. The 3800kv seems to go instantly when sold on other forums. Good torque and lots of speed. But yeah, heat sink and fan are cheap insurance to keep the motor cool. Castle's site specifically says not to use the 5700kv on the slash 4x4.

07-08-2011, 05:54 PM	#9
squatch71 I wanna be Dave Join Date: Sep 2008 Location: four o six Posts: 2,101	had the same problem in my 2wd slash, toasted the 5700kV motor, sent it to Castle, did a motor swap, upgraded to a 4 pole 5700kV and geared down on the pinion and geared up on spur...still stupid fast and harder to control on 3S.

Sponsored Links

RCCrawler Forums

Thread: overheated castle