72v 8-10" Hub BLDC Motors -- Do they exist?

Lightweight / Folding / Portable EVs - seats optional
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chuyskywalker   10 W

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72v 8-10" Hub BLDC Motors -- Do they exist?

Post by chuyskywalker » Nov 14 2019 6:28pm

I've done some sleuthing around google, aliexpress, and even used the search function here and I can't seem to find any 72v 8-10" BLDC motors out there.

I'm looking to mod out a scooter for lightweight (20-30lbs), fast (30mph), and sacrificing range to make it happen. It would seem the simplest way to do that would be to have a single motor that just hauls butt. Thus, tossing an 8" 72v motor on would certainly tick those boxes.

It's pretty common advice that most motors will go well above their advertised voltage, but I'd rather have one designed for what I want.

Perhaps what I'm looking for isn't around because it's not physically possible? Is 8-10" just too small to make such a motor exist? If not, where do I find these elusive beasts?

Thanks!

larsb   10 MW

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Re: 72v 8-10" Hub BLDC Motors -- Do they exist?

Post by larsb » Nov 22 2019 2:27pm

Elusive beasts? Plentiful like ants i would say

https://tzquanshun.m.en.alibaba.com/pro ... b_Mo_.html

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chuyskywalker   10 W

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Re: 72v 8-10" Hub BLDC Motors -- Do they exist?

Post by chuyskywalker » Nov 22 2019 8:41pm

larsb wrote:
Nov 22 2019 2:27pm
Elusive beasts? Plentiful like ants i would say

https://tzquanshun.m.en.alibaba.com/pro ... b_Mo_.html
A common confusion in the motor industry; both wheel like this (which the MOTOR has a 10" diameter) and scooter motors in which the outer diameter of the wheel, when attached, are both labeled 10".

So, I guess, in this case it's more like what I want it a motor which is about 6-8" in diameter so, when combined with the wheel on the outside, it's 8-10" in diameter total.

(Also makes buying tire tubes a mess...)

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Re: 72v 8-10" Hub BLDC Motors -- Do they exist?

Post by larsb » Nov 23 2019 12:19am

So you want 10inches rolling diameter and not 10” tyre?

I ask since linked MOTORS are not 10” it’s the TYRE size:
C8740EF1-3CA5-414A-99A5-0187A91FA926.jpeg
C8740EF1-3CA5-414A-99A5-0187A91FA926.jpeg (96.28 KiB) Viewed 2433 times
This would mean that if you want a max 10” rolling diameter then buy an 8” hub motor with narrow tyre.

Why 72V? You don’t need high volts to go faster, only the correct winding

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chuyskywalker   10 W

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Re: 72v 8-10" Hub BLDC Motors -- Do they exist?

Post by chuyskywalker » Nov 23 2019 2:32am

larsb wrote:
Nov 23 2019 12:19am
Why 72V? You don’t need high volts to go faster, only the correct winding
Must admit, my knowledge is a bit weak in that area -- I'll go google about

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ESR_RSE   1 W

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Re: 72v 8-10" Hub BLDC Motors -- Do they exist?

Post by ESR_RSE » Nov 23 2019 11:15am

Could one of these fit a Go Ped ESR?

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Re: 72v 8-10" Hub BLDC Motors -- Do they exist?

Post by latex » Jan 22 2020 6:41pm


Chricious   1 mW

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Re: 72v 8-10" Hub BLDC Motors -- Do they exist?

Post by Chricious » Apr 30 2020 5:19am

Basically most 60V rated motors can take 72V.

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