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

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Sep 8, 2019
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USA, CA, Bay Area
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 said:
Elusive beasts? Plentiful like ants i would say

https://tzquanshun.m.en.alibaba.com/productgrouplist-803544481/10inch_500W_4000W_205_Hub_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...)
 
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
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
 
This is a decent motor:
https://www.aliexpress.com/item/4000275603402.html?spm=a2g0o.productlist.0.0.62e4326f8TVaKJ&algo_pvid=85a6a638-a383-4235-afcb-2aa1bffa1757&algo_expid=85a6a638-a383-4235-afcb-2aa1bffa1757-1&btsid=2a3e56d5-d62c-4a0d-b2a3-ccb5660b6535&ws_ab_test=searchweb0_0,searchweb201602_10,searchweb201603_53
 
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