RC-Monster Forums - View Single Post - KB-45 Heat

GHSTRCN · 12:27 AM

Hey guys,

I'm pretty new to all this electric stuff after converting my Monster GT to a brushless truck, and I've learned to make sure the stuff I put into the truck is up to challenge of moving it.

So far I've burnt up a Turnigy 100a Plush ESC, and a KB-45 8L 2300kv motor... That's way over $100 up in smoke.

So I now have an MMM in the truck, with the V3 case on the way and the new 1.20 software installed. But I've noticed that my new KB-45 8XL (XL not an L this time) seems to get warm even without a load. When I spool the motor up without the pinion gear on it, after about 15-20sec of just seeing how fast it's gonna go compared to the 2300kv motor, it touch it and it seems warm. Maybe 100-110ºF (not that warm I know, but with no load I expected 0 heat). Is this normal? I'm afraid that with the 14lb truck the motor will overheat like the last one and will demagnetize. The gearing will be 14/58 if anyone cares, don't know the gear ratios of the tranny and diffs...

Thanks in advance

	(#1)
GHSTRCN RC-Monster Stock Offline Posts: 17 Join Date: Nov 2008 Location: Sammamish, WA	KB-45 Heat - 11.06.2008, 12:26 AM Hey guys, I'm pretty new to all this electric stuff after converting my Monster GT to a brushless truck, and I've learned to make sure the stuff I put into the truck is up to challenge of moving it. So far I've burnt up a Turnigy 100a Plush ESC, and a KB-45 8L 2300kv motor... That's way over $100 up in smoke. So I now have an MMM in the truck, with the V3 case on the way and the new 1.20 software installed. But I've noticed that my new KB-45 8XL (XL not an L this time) seems to get warm even without a load. When I spool the motor up without the pinion gear on it, after about 15-20sec of just seeing how fast it's gonna go compared to the 2300kv motor, it touch it and it seems warm. Maybe 100-110ºF (not that warm I know, but with no load I expected 0 heat). Is this normal? I'm afraid that with the 14lb truck the motor will overheat like the last one and will demagnetize. The gearing will be 14/58 if anyone cares, don't know the gear ratios of the tranny and diffs... Thanks in advance Sold Monster GT 8.0 - KB-45 8XL 1600kv, MMM, Zippy-R 5S 25C 4800mah LiPo, Spektrum DX 3.0 Rustler VXL - 3S 4900mah 20C Rhino Lipo, 2S Turnigy 5000mah 20C Lipo, DX 3.0 Last edited by GHSTRCN; 11.06.2008 at 12:27 AM.