Big Rock is this a good replacement for stock Big Rock motor?

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jamlee

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Arrma RC's
  1. BigRock 4x4
Hello. The stock motor on my Big Rock 4x4 v3 3s blx seized up. The bearings were ruined and the motor shaft seems a little bent(?). Contacted horizon hobby and not eligible for replacement as it is just out of warranty.

If I keep the same stock gearing, and stock ESC, would this motor be ok to use? The KV is different than the stock motor (3200kv?). What does the difference in KV do to the car?

Goolrc S3670 2850KV

$34 CAD and free shipping.

https://www.amazon.ca/GoolRC-S3670-2850KV-Brushless-Sensorless/dp/B08YD792LM/

I am located in Canada. I like that this is being shipped by amazon and would arrive next week (vs. aliexpress etc...)

Thanks.
 
It should work fine. It’s slightly slower, might run a little cooler, and you could gear up a pinion tooth or two to bring your speed back in line with, or above, stock. I haven’t heard great things about GoolRC though. For budget motors, I think most would recommend Rocket/Surpass motors for a little more money. They have a pretty good reputation.
https://www.amazon.ca/SURPASS-HOBBY-Sensorless-Waterproof-Brushless/dp/B07TSD9HLX/ref=sr_1_33?crid=HM33DF0A0POK&keywords=Rocket+brushless+motor&qid=1685059061&sprefix=rocket+brushless+motor,aps,112&sr=8-33
 
It should work fine. It’s slightly slower, might run a little cooler, and you could gear up a pinion tooth or two to bring your speed back in line with, or above, stock. I haven’t heard great things about GoolRC though. For budget motors, I think most would recommend Rocket/Surpass motors for a little more money. They have a pretty good reputation.
https://www.amazon.ca/SURPASS-HOBBY-Sensorless-Waterproof-Brushless/dp/B07TSD9HLX/ref=sr_1_33?crid=HM33DF0A0POK&keywords=Rocket+brushless+motor&qid=1685059061&sprefix=rocket+brushless+motor,aps,112&sr=8-33
I've got a GoolRc 3650 in my slaah 4x4 and it has takin some serious abuse. Its been in there for almost 2 years and was in a buddies 3s arrma for a year b4 that and just keeps going.
I've heard you get some good ones and some junk ones though. Not real consistently in the quality
 
Thanks for all the replies.

I took the advice and payed a little bit more for the surpass motor. Ordered a 3660 3100kv. Aliexpress says it’ll should arrive mid-June. Total with shipping was $42 CAD.

I looked at the spektrum motor from Jennyrc. With shipping to Canada came to $65 CAD

I watched those video links explaining what kv is etc. Very informative.
 
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