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Thread: 1/8 Brushless Motor Question

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Old 01-09-2020, 08:58 PM   #1
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Default 1/8 Brushless Motor Question

I have the opportunity to get this motor for what I would call a decent price (much less that the MSRP), in either 1700Kv, or 1900Kv. Tenshock X812L

I am willing to be a guinea pig, per se, and try something that is not the norm.

If this looks like a decent motor, which Kv rating would be better for a big, heavy rig? (1700Kv, or 1900Kv)

Feel free to tell me I am better off getting a Tekin T8, or Holmes Puller Pro 4274 as well. Just looking at other options for my home brew X(E)-Factor build.

In regard to weight, I suspect it'll end up somewhere between 12-16 lbs (possibly more)

For batteries, if that matters, I have 5200mha in 2S and 4500mah in 3S.
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Old 01-10-2020, 12:20 AM   #2
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Default Re: 1/8 Brushless Motor Question

i dont know the over all size of that motor but my hd8 1/8 motor just bearly fit the wraith transmission i had to change the pinnion and sper gears to get good gear mesh because the motor had no room for adjustment it also interfered with the link mounts on the wraith
i dont know what rig your running it on but i would exspect a fight getting that large of a motor to fit but the torque would be unreal
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Old 01-10-2020, 12:25 AM   #3
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Default Re: 1/8 Brushless Motor Question

Iím going to be running it on a Summit transmission, in a custom built.

Hoping to have a pretty open platform to build on. Itíll be a stretched X-Factor chassis.

One of the reasons I was thinking a low(ish) Kv rating, is because it will be running a 7-1/2Ē to 8-1/2Ē tall tires in a pretty heavy rig. Iím not looking for any real speed, just enough power to get the rig moving and not be a complete dog

Last edited by AK KRAWLER; 01-10-2020 at 02:49 AM. Reason: More info
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Old 01-10-2020, 07:47 AM   #4
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Default Re: 1/8 Brushless Motor Question

There is always the classic Castle 1515 2200kv motor but those seem to be out of stock everywhere. One of those throws my 18lb Savage Flux XL around like its nothing.

I have read about people being happy with these Hobbystar motors in large scale bashers:

https://www.rcjuice.com/motor-esc/br...ter-truck.html

For a large, heavy truck, I would be more concerned with the motor size than KV. A lower KV motor doesn't make more torque but a longer can does which will move a heavy truck easier. A 40x74mm motor in the 1800-2000kv range on 4s would be a pretty flexible setup.
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Old 01-10-2020, 08:51 AM   #5
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Default Re: 1/8 Brushless Motor Question

i like the 2200 kv still blaizinh fast ive had the yeti xl close to 60mph with half throtle on 6s the lower the kv the higher the voltage
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Old 01-10-2020, 11:09 AM   #6
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Default Re: 1/8 Brushless Motor Question

Quote:
Originally Posted by svt923 View Post
There is always the classic Castle 1515 2200kv motor but those seem to be out of stock everywhere. One of those throws my 18lb Savage Flux XL around like its nothing.

I have read about people being happy with these Hobbystar motors in large scale bashers:

https://www.rcjuice.com/motor-esc/br...ter-truck.html

For a large, heavy truck, I would be more concerned with the motor size than KV. A lower KV motor doesn't make more torque but a longer can does which will move a heavy truck easier. A 40x74mm motor in the 1800-2000kv range on 4s would be a pretty flexible setup.
Quote:
Originally Posted by ferp420 View Post
i like the 2200 kv still blaizinh fast I've had the yeti xl close to 60mph with half throttle on 6s the lower the kv the higher the voltage
Thanks guys, much appreciated and lots to think about.
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Old 01-10-2020, 03:11 PM   #7
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Default Re: 1/8 Brushless Motor Question

Quote:
Originally Posted by svt923 View Post
I have read about people being happy with these Hobbystar motors in large scale bashers:

https://www.rcjuice.com/motor-esc/br...ter-truck.html

For a large, heavy truck, I would be more concerned with the motor size than KV. A lower KV motor doesn't make more torque but a longer can does which will move a heavy truck easier.
Okay, talk about a RABBIT HOLE

There are a lot of options to think about. I am waiting on some information back from RC Juice on the HobbyStar motors. I think here are lots of good choices, that are affordable, sensored and non-sensored, from HobbyStar and TenShock.

As said before, I probably do not need sensored for a big rig like this, which really opens up the options.

Last edited by AK KRAWLER; 01-10-2020 at 03:17 PM. Reason: Corrected spelling error
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Old 01-10-2020, 07:41 PM   #8
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Default Re: 1/8 Brushless Motor Question

So... Right, wrong or indifferent... bigger is better right

I just scored one of these for $62, shipped to my door in Alaska.
HobbyStar 4092 1480Kv

Well see how this goes
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Old 01-10-2020, 08:29 PM   #9
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Default Re: 1/8 Brushless Motor Question

Quote:
Originally Posted by AK KRAWLER View Post
So... Right, wrong or indifferent... bigger is better right

I just scored one of these for $62, shipped to my door in Alaska.
HobbyStar 4092 1480Kv

Well see how this goes
Can't beat that! I'm anxious to hear how it works out for you.
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Old 01-10-2020, 08:35 PM   #10
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Default Re: 1/8 Brushless Motor Question

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Originally Posted by JatoTheRipper View Post
Can't beat that! I'm anxious to hear how it works out for you.
Thanks Jato, me too. I think it is going to be fun.

When I get home next week and parts start showing up, I'll add some pics to the build thread.
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