E-MTB with dual 5065 motor???

Lightweight / Folding / Portable EVs - seats optional
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Pedrohlt   10 mW

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E-MTB with dual 5065 motor???

Post by Pedrohlt » Oct 17 2016 12:28pm

I'm thinking about making a E-MTB with:

-2x 5065 270kV sensored motors (https://goo.gl/G0ZmFk)

-2x FVT 80A 6S sensored ESC (https://goo.gl/PSk2oW)

-3x 6S 5000mAh LiPO for 22.2v 15Ah

-Gearing for 25mph

My idea is to run at about 1200W max on each motor, to avoid overheating. With the 80A esc, the max cont power would be about 1800W. Can I limit the max power by programming the esc?

This setup will be very cheap (USD 182 for motors and esc) and light (435g each motor), but my concern is about overheating.

What do you guys think? Can those 5065 motors handle 1200W continuous?
Custom frame bike: 32S1P 38140S 105.6V 12Ah - Cell-Man 24FET 4115 (stopped working after two rides) - Crystalyte 5404
>>now using Lyen 12FET 4110 --> soon will be using 40S1P 132v 12Ah Headway with my revived 24fet 4115 cntrl!!!

Mountainboard: Dual Kollmorgen motors- 2x 12FET 4110 - 16S1P 38140S 12Ah

Longboard: 6S 10Ah LiPO / single 6364 motor / X-Car Beast 120A ESC --> in progress

WeeChumlee   1 kW

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Re: E-MTB with dual 5065 motor???

Post by WeeChumlee » Oct 19 2016 3:39am

As this is a MTB, with huge wheels and off-road capability, the power draw on hard acceleration will be huge.
If I were you I would most definitely go with a very minimum of the 120A FVT, better still the 150A version.
As far as I know there is no program to limit the max power of the FVT controller to a certain level.
I appreciate you are trying to keep it a light as possible but, depending of course on how you intend to use it, you are asking a lot from 50mm motors.

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Pedrohlt   10 mW

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Re: E-MTB with dual 5065 motor???

Post by Pedrohlt » Oct 19 2016 6:49am

Thanks for your reply. Yes, a MTB would draw much more power than a regular longboard. But my idea it to limit the motor current at 60A, so it would run at about 1300W on each motor. My concern is how to limit the current on those FVT ESCs and if a 5065 can handle 1300W of continuous.
Custom frame bike: 32S1P 38140S 105.6V 12Ah - Cell-Man 24FET 4115 (stopped working after two rides) - Crystalyte 5404
>>now using Lyen 12FET 4110 --> soon will be using 40S1P 132v 12Ah Headway with my revived 24fet 4115 cntrl!!!

Mountainboard: Dual Kollmorgen motors- 2x 12FET 4110 - 16S1P 38140S 12Ah

Longboard: 6S 10Ah LiPO / single 6364 motor / X-Car Beast 120A ESC --> in progress

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Okami   10 W

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Re: E-MTB with dual 5065 motor???

Post by Okami » Jan 09 2017 4:30pm

Hey - is there any follow up on this one? I also plan to use (ponder the idea) about using 5065 motors.. ? So how bad are they?

I plan to use the 200kv version but there is also 149kv available.. the wheel size is only 6inches, so I hope not to over burden them.. it should be a light commuter board not an offroad beast :)

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Re: E-MTB with dual 5065 motor???

Post by torqueboards » Jan 09 2017 5:19pm

Dual 5065 would be fine but for the added cost I'd just go 6355 or 6374 as the bigger motors are definitely more durable. The difference in price per motor is maybe $20-40/ea so about $40-80 for two.
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Okami   10 W

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Re: E-MTB with dual 5065 motor???

Post by Okami » Jan 10 2017 3:45am

Thanks for the answer.. Im asking because there is a really good price for 5065.. The 63'' ones I can get in Eu, cost about 30usd more each. Sorry for being on a budget :D

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Pedrohlt   10 mW

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Joined: Dec 13 2009 4:13pm
Location: São Bernardo do Campo / SP - Brazil

Re: E-MTB with dual 5065 motor???

Post by Pedrohlt » Jan 11 2017 2:29pm

My two sensored 5065 motors arrived last week. Didn't test it yet, but it looks really nice. I notice that it's much harder to turn it by hand than my other 5065 motor (from hobbyking). You can really feel the magnets when turning it, I don't know if it has stronger magnets or smaller airgap, but the difference is huge. I think this means more torque, so it's good. Next week I'll post some pictures of the motors.
Custom frame bike: 32S1P 38140S 105.6V 12Ah - Cell-Man 24FET 4115 (stopped working after two rides) - Crystalyte 5404
>>now using Lyen 12FET 4110 --> soon will be using 40S1P 132v 12Ah Headway with my revived 24fet 4115 cntrl!!!

Mountainboard: Dual Kollmorgen motors- 2x 12FET 4110 - 16S1P 38140S 12Ah

Longboard: 6S 10Ah LiPO / single 6364 motor / X-Car Beast 120A ESC --> in progress

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Okami   10 W

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Re: E-MTB with dual 5065 motor???

Post by Okami » Jan 11 2017 2:35pm

Cool. In which thread / topic will you post the ''results''?

By the way - did you get them from Banggood? They are super cheap there now.. and there's 149kv and 200kv versions available for the 5065 size.. they come sensored and even has some sort of gear in the kit already.

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