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08-12-2015, 06:59 PM
| #1 |
| Newbie Join Date: Jul 2014 Location: Australia
Posts: 14
|  Yeti with 400kv and 3s?
Hi All, This is my first build in many years and Im learning alot about modern motor / esc and battery systems. When I bought my kit I also bought a Hobbywing SC8 esc and 4000kv 4 pole sensorless motor and a 5000ma 3s lipo. I assumed the 4000kv motor was a bit high in the kv department but it was all they had so I went with it. So my question is, will this system work ok in a yeti for general bashing or should I swap something while I have the chance (ie before I use it I can do a swap at the hobby shop) I am happy to gear down the pinion, put heatsinks / fans on the motor and upgrade drive train parts as required as long as this set up does not complicate things too much. Any advice would be greatly appreciated.  |
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08-12-2015, 08:14 PM
| #2 |
| Pebble Pounder   Join Date: Jul 2013 Location: Central Rockies
Posts: 163
| Re: Yeti with 400kv and 3s?
I ran that same esc in my yeti, but the 3400kv 3656 ezrun motor on 3s. The first time I ran my yeti, I literally ran 3- 5000mah 40c batteries one after another for about 1hr 20 mins or so, of some serious bashing. I temped my motor it was around 165 degrees. These motors have a ton of torque and great top end speed, and can handle a ton of abuse! I was using a 16t pinion, with stock spur gear. In all honesty I can't say for sure your not going to have heat issues with that 4000kv motor, but if you run a heat sink with a fan, and gear down to 12 or 13t pinion, you should be fine. That thing will absolutely fly on 3s!  That's my 2 cents, hope it helps! |
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08-12-2015, 08:28 PM
| #3 |
| I wanna be Dave Join Date: Jul 2013 Location: Minneapolis
Posts: 5,202
| Re: Yeti with 400kv and 3s?
I'm running the 4000kv 3656SD in my Yeti on 3s...runs great and rips. I would get a motor fan though.
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08-12-2015, 09:34 PM
| #4 |
| Newbie Join Date: Jul 2014 Location: Australia
Posts: 14
| Re: Yeti with 400kv and 3s?
Thanks for the replies guys, sounds positive. I'll be sure to get some decent fans for the motor. I assume these can plug straight into the reciever with this set up? |
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08-13-2015, 07:17 AM
| #5 |
| Quarry Creeper Join Date: Feb 2015 Location: Florida
Posts: 346
| Re: Yeti with 400kv and 3s?
Im going to run my yeti on 4S with a 3000kv motor. So we should be right around the same rpms. I'll report back once I get the kit completed.
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08-19-2015, 04:02 AM
| #6 | |
| Newbie Join Date: Jul 2014 Location: Australia
Posts: 14
| Re: Yeti with 400kv and 3s? Quote:
It's a beast that's for sure! Top end speed is prob more than this style of truck realisticly needs so I'm going to drop the stock gearing to a 14t pinion. Motor temps are ok for now (125f max) but it's cold here (50f) and I haven't pushed it hard for extended periods yet so I will be installing 2 fans and a heat sink ASAP to keep temps in check ESC barely gets hot at all. So far so good"thumb-sup | |
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