xf40 30h 1kw - how far can i push it?

[hac]

i have this hub and been using it for about 2 months. controller that im using is a mxus 48v 30a. does anyone have any exp with this motor and jow far can i safely push it w regards to amps in the controller? im looking to add a bit more to it and looking for others who might have done it. also could it take more volts? if i use a 52v controller and battery for it? any info would be appreciated.

 

[goatman]

I have the xf40 in a 20 inch wheel. fast winding. at grin I think they call it a model 3005 or 3006? look at their site. im running 2-14s4p 52v batteries with a phaserunner at max amps so around 35/40 amps. I did a steady 50km/h run for 8km stopped at a store for 5 min turned around and same speed and distance, motor was warm but not hot. yesterday I did a 60km trip pulling a bobyak trailer but average speed 30km/h, again warm but not hot. its only 5 Celsius out, I haven't added statorade to the motor yet but I will be, im jumping the batteries upto 2-17s4p.

 

[dogman dan]

Link to the darn thing always helpful.

 

[Dauntless]

https://electricbike-blog.com/2015/07/04/kinaye-motorsports-selling-a-laced-mxus-3000w-direct-drive-hub-for-699/

That probably tells more than the website.

If it was a coin it would be worn but clear. If it was a car it would be a Lexus.

 

[goatman]

Link to the darn thing always helpful.

at grins website the mx3005rc in 11rpm/v is what I bought, 20 inch wheel winding, on the motor it says xf40 30h 17 12 0028, ill try to link to the site. its cheap in price, I probably have 600km on it and I like it.https://www.ebikes.ca/shop/electric-bicycle-parts/motors/direct-drive/mx3005rc.html#

 

[amberwolf]

The xf40's I have are these:

one 3T and one 4T. Usually specified as a 4503 and a 4504, like in the grin simulator.

I don't know if your xf40 is the same thing, since the second set of numbers is much smaller, and afaik that number is teh width of the magnets / stator, so mine would be a 45mm width, and yours would only be two-thirds of that, which means it has only two thirds of teh torque, etc.

Mine can handle 3kw in a 20" wheel fine, but in a bigger wheel you'd derate that to 2kw.

Yours would probably be 2kw in a 20" wheel, or 1000-1500w in a bigger wheel (depending on the wheel size).

Peak power can be much higher for a few seconds at a time, of course, but continuous power has to stay below the overheating points.

If your motor version is listed in the http://ebikes.ca/simulator, you can figure out what the max power you can put thru it is under your specific conditions with your specific system.



FWIW, this is the 4503 on the right and an old 9c 28mm (similar to your 30mm) motor on the left, to compare thickness:

 

[hac]

https://m.alibaba.com/product/62015470260/detail.html?spm=a2706.wapshop.0.0
thanks for the replies guys. this is the motor that i have and not the 45h 3kw. wish i got that in the firat place as it was just a thousand or 2 (php) difference in pricing but didnt know any better back then. first build.

anyway i was hoping to use a 52v 40 amp controller for this albeit the seller package it a 48v 30amp controller. ill give it a go then after all these replies. would also take awhile but will order statorade just to make sure.