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2650Kv motor on 6S

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Old 01-16-2019, 04:55 PM
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Default 2650Kv motor on 6S

The question I have, running a 2650Kv motor on 6S is it bad for the motor or the ESC?
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Old 01-16-2019, 09:13 PM
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You need allot more information than that or you will get a book of answers. i would start by looking for something that indicates the max recommended speed of the motor. A good bet is you will delaminates the magnets on the rotor.
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Old 01-17-2019, 02:28 PM
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Originally Posted by Bry195 View Post
You need allot more information than that or you will get a book of answers. i would start by looking for something that indicates the max recommended speed of the motor. A good bet is you will delaminates the magnets on the rotor.
That's what I was thinking the motor.
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Old 01-17-2019, 03:19 PM
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This is what happened to a local guy running a 2650 on 6S:

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Old 01-17-2019, 06:58 PM
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Originally Posted by ta_man View Post
This is what happened to a local guy running a 2650 on 6S:

THANK YOU, THANK YOU. No 6S for me.
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Old 01-20-2019, 06:51 PM
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Would you call that totalled?
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Old 01-21-2019, 11:24 AM
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When I hear someone is using a 2650kv motor, I automatically think of Castle Creations' 1512-2650Kv 4068 motor. From the looks of that buggy picture above, it's probably a good reason why Castle specs a 4S LiPo pack maximum for that motor.

Go with the 2200kv motor for 6S use.
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Old 01-21-2019, 12:53 PM
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Don't listen to the internet voodoo of things...

Do you realize that 4s on 1/8 scale is the equivalent of combustion (nitro) engine for racing?

Now imagine using 5s or 6s...

Like you had build your own space rocket ship combustion engine yourself cause there are no aftermarket that will do it!

Now real world, real life...

2650kv is to much for 4s... even 2200kv becomes to hot at the end of the pack...but real world 2200kv on 4s is doable till the LVC comes in.

As for 6s use...you need a 1650kv motor, just to be safe..and that is almost to much...maybe something on the 1200kv to 1500kv for 6s use, to be safe on temperatures and eletronics.

I have experience on that matter... 6s use! lol

-One example of mine! Just do speeds runs on 6s... for bashing...that's a NO!
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Old 01-21-2019, 01:01 PM
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My Arrma Outcast is 6S with a 2050Kv, I was running 4S 2650Kv in my 1/8 On-road I still the motors.
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Old 01-23-2019, 06:38 PM
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Originally Posted by ta_man View Post
This is what happened to a local guy running a 2650 on 6S:

That's what happens when you janky battery packs in a high amp setup.
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Old 01-24-2019, 01:44 AM
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What motors do they run on 6s when people are doing those speed runs at over 100mph?
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Old 01-26-2019, 04:35 PM
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I thought they were running 2650Kv.
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Old 01-29-2019, 01:54 PM
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Nothing at all limits how many volts you can run to a motor, ESC's yes but not on motors. The voltage "limitations" are there to give you a reasonable idea of the voltage you can run on that motor and have a good chance of being able to set it up to keep temps in check. It's possible to overheat a motor to the point of destruction (motor and/or ESC) even when running well under the maximum rated voltage if it is overgeared. Clearly this is an exaggeration, but imagine putting your 1/8 motor on 2S in a Honda Civic, it would burn up quite fast. For example, we run a HobbyStar 4092 in 1730KV which is rated to 26V on 8S in our shop Traxxas UDR and it never overheats. We do monitor temps and are cognizant of the potential to overheat so don't go full throttle for an entire charge, but you get the point. Although most 1/8 2200KV motors do get a 6S rating, our general advice is to stick to 2000KV or lower on 6S in order to easily keep temps in check. It's almost every week we get an e-mail from a customer saying they have a defective motor after they melted it down, the general consensus is that if it's rated for "x" voltage then nothing else matters, but as most of us here know that is far from reality. Temperature is the only thing that limits how much power you can run to a motor, as long as you monitor closely and allow to cool if overheating there is no harm in testing out some different setups.
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Old 01-29-2019, 06:25 PM
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Temperatures are not the only issue. Castle specs a maximum of 60,000 RPM for the 15 series motors (it is printed right on the end opposite the output shaft).

A 2650KV motor on 6S will be turning 66,780 RPM unloaded. so it is possible to get it over 60,000 under load on 6S which could cause spontaneous disassembly of the components of the rotor. Maybe not the first time you run it that fast, and maybe never, But it is a possibility.
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Old 02-04-2019, 11:50 AM
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Originally Posted by RC Juice View Post
Nothing at all limits how many volts you can run to a motor, ESC's yes but not on motors. The voltage "limitations" are there to give you a reasonable idea of the voltage you can run on that motor and have a good chance of being able to set it up to keep temps in check. It's possible to overheat a motor to the point of destruction (motor and/or ESC) even when running well under the maximum rated voltage if it is overgeared. Clearly this is an exaggeration, but imagine putting your 1/8 motor on 2S in a Honda Civic, it would burn up quite fast. For example, we run a HobbyStar 4092 in 1730KV which is rated to 26V on 8S in our shop Traxxas UDR and it never overheats. We do monitor temps and are cognizant of the potential to overheat so don't go full throttle for an entire charge, but you get the point. Although most 1/8 2200KV motors do get a 6S rating, our general advice is to stick to 2000KV or lower on 6S in order to easily keep temps in check. It's almost every week we get an e-mail from a customer saying they have a defective motor after they melted it down, the general consensus is that if it's rated for "x" voltage then nothing else matters, but as most of us here know that is far from reality. Temperature is the only thing that limits how much power you can run to a motor, as long as you monitor closely and allow to cool if overheating there is no harm in testing out some different setups.
This is the best answer I have gotten, thank you.
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