Cheap 48V hub motor questions

renaud

10 mW
Joined
Mar 26, 2011
Messages
20
Hello all and sorry for my poor english.
Well, I resume my experience and then post my question.

I am on electric bike for almost 3 years. I've started with french legal bike povered @24V and 250W motor, runing near 30km/h during few months.

Then I go to 36V and 48V with ecrazyman controllers and Lipos from HK.

I run more than 10.000km a year, doing more or less 75km a day to go to job.

The initial rear motor in 24V done 8000km then I burned the hall captors and go for a front motor, simpler to manipulate.

I've done many more kilometers, running at an average speed of 42km/h / 35km trip with this front motor but my bike was stolen in september.

So I am using the mule with a 36V running @48V, but the bike is by far too slooooow @30km/h (25/36*48)...

I've bought another 24V motor but a friend of mine let the bike fall down and the motor died few kilometers after.

Then I bought another 24V motor but I kill the 8FUN quickly, in the same way as the previous one (since that I think the problem with the previous motor was not because of my friend) : I ear the motor turnig (wiiiiiiizzzzzz) but the wheel does not turn.

Because I do not understand mechanic I think I cannot repair that.

Well I think there was a change in the 24V 8FUN motors so now they do not eat /-1000W...

Now I would like to buy a cheap 48V motor to run at 45km/h top speed and I seen a 48V 350W vpower motor on epay :
http://cgi.ebay.fr/Front-48V-350W-E...ltDomain_0&hash=item4abfca585b#ht_5107wt_1105

Is there any endless-sphere user knowing this motor ? Real speed ? Watt/kilometer ?

Thanks
 
That is not very cheap, once you add postage.

$300 US dollar with postage

Look at these..very similar price

http://em3ev.com/store/index.php?route=product/product&path=40&product_id=52

$13 USD more and better quality and service from the seller (Paul / Cell man)

http://em3ev.com/store/index.php?route=product/product&path=40&product_id=111

or in a wheel
http://em3ev.com/store/index.php?route=product/product&path=36&product_id=107

or from a different seller
http://www.ebikes.ca/store/photos/M2807FD26.jpg
http://www.ebikes.ca/store/store_motors.php


Go with a known vendor..not e-bay.. Prices are near enough the same and you get better support if there is a problem



Ce n'est pas très pas cher, une fois que vous ajouter un affranchissement.

300 $ dollar américain avec l'affranchissement

Regardez ces prix .. très similaire

http://em3ev.com/store/index.php?route=product/product&path=40&product_id=52

La qualité de $ 13 USD de plus en plus et le service du vendeur (Paul / homme Cell)

http://em3ev.com/store/index.php?route=product/product&path=40&product_id=111



ou dans une roue
http://em3ev.com/store/index.php?route=product/product&path=36&product_id=107



ou d'un vendeur différent
http://www.ebikes.ca/store/photos/M2807FD26.jpg
http://www.ebikes.ca/store/store_motors.php


Allez avec un vendeur connu .. pas e-bay .. Les prix sont assez près les mêmes, et vous obtenez un meilleur soutien si il ya un problème
 
Many many thanks NeilP !

(btw I do not need french translation, I can read english, it's only when I write english I am not very self confident).

I will see with EM3EB so with a MAC motor.

Thanks again !
 
Where are you in France? or else where?

We just ordered a motor from Emissions Free ( Cell Man Here on the forum), just before Christmas, from China..It arrived within the week.
 
It was Fedex express, or similar...total cost was $650 dollar, but that was a complete kit: Cycle Analyst, throttle, torque arm, controller and accessory switches etc.

Where about in France? Brittany? Normandy?
 
I am in the south, near Avignon, Provence.

The weather is fine all the year (except wind sometimes +95kmh...), no snow and temp near 0° in winter (-2° in december) so I can use the bike (near) all the year.

I just need a whell with the motor, I have other components by myself (watt meter, few different controllers from bmsbattery or ecrazyman, batteries, chargers...).
 
I know the area a little, but have spent most of my time n France up north, in the Brittany/ Normandy area. Weather here on the islands is much the same temperatures, rarely below freezing and no snow. But our summer temps are not as warm as yours
 
My girlfriend is living in "Le Havre" in "Haute Normandie". It rains 350 days a year in this region...
 
Sounds to me like you want more power, more reliablitiy, and perhaps even more power later.

For that, I'd suggest a direct drive type motor. They just typically can stand a bit more abuse, like running them above 1000w.

One reliable yet inexpensive vendor Is EM3ev, Otherwise known as cellman. This motor is what I mean. http://em3ev.com/store/index.php?route=product/product&path=36&product_id=54

Or if you have the funds, a very complete kit with a more powerfull Crystalyte motor from Grin Cyclery.
 
Thanks Dogman.

The fact is I need a reliable solution because I really use the bike everyday and for 35km trip, under sun or heavy rain etc...

I do not need 60km/h top speed. At 45km/h top speed, using the bike is a 52 minutes trip and with the car it's 45/50 minutes (when no traffic jam).

Another point : I've spend two years working for free with a french reseller importing kits from China. I've done that because I love to read and write in english (chinglish ?), I love electric bikes and I love China (I went in China few times to visit providers). But I've just stopped this "hobby" because It took a lot of time (and no salary) and the guy does not want to go to more powerfull motors (and finally I am not his slave). But I have some persons asking for +25km/h bikes with no pedaling (in France you have to pedal and the speed is limited to 25km/h) and maybe I can start a little business with this kind of products (but I need reliability). I've prepared a website (in french, yes...) https://sites.google.com/site/electricpowerbike/
 
Somebody has in their signature a link for the option of 36v or 48 volt on 1,000w rear hub kit that's under $300. The 500w was even less. It looked sort of like Magic Pie. Unfortunately I noticed it for the first time on the road here, so I don't have a link saved. Someone could set us up here real quick. . . .
 
@dunum : yes it's possible to find local supplier for 9C motors but locally the cost is crazy, I prefer to pay the import tax.

If I go to the MAC, I would like to find information about everything : effective reliability, Watt/kilometer @ different speeds etc... Do you think it's possible to do 35km with 20Ah 48V @ 40km average speed with it ?
 
I guess I misunderstood, and got the idea you wanted to move up to 1000w. Then I guessed that you would inevitably want 2000w, like many of us have done.

You might be pleased though, with 1000w or so, but less top speed. This is the route I went to for my off road, trail riding bike. Same basic 9 continent or 9 continent like design motor,but using a slow winding.

For example, the 6x10 winding will be very slow on a 36v 20 amps controller. About 25kph max. But it will still have 800w or so of power when you need to climb a hill.

Here's the only european source I'm aware of. Hmm, well, was aware of. Today the page won't open. Might just be getting maintenance on the site. www.wheelkits.it

You could ask cellman if he can get his muxus dd motor for you in a slower winding. His kit is a faster winding 9x7. These slow winding motors that I like so much are a bit hard to find.

As for reliability, I thing dd is the way to go. No clutch to break, they shed heat a bit better when abused, and if you run them with a two way controller they will run either sensored or sendorless, so you still can get home if the halls go bad.
 
cellman actually offers the mxus dd kit in four windings (rear hub) on his site : 275 rpm, 305 rpm, 335 rpm, 370 rpm on his site.
I have the 305 rpm with a 48v 15a battery and it goes 28 mph on flats with no peddling.
http://em3ev.com/store/index.php?route=product/product&path=36&product_id=54
 
renaud said:
@dunum : yes it's possible to find local supplier for 9C motors but locally the cost is crazy, I prefer to pay the import tax.

If I go to the MAC, I would like to find information about everything : effective reliability, Watt/kilometer @ different speeds etc... Do you think it's possible to do 35km with 20Ah 48V @ 40km average speed with it ?


This simulator has the older BMC motors at the top of the first pull down menu. The MAC's are copies of the BMC from 10 years past. The BMC's have a newer single piece clutch that won't fall apart and are sealed better then the MAC's.

http://www.ebikes.ca/simulator/

Clutch video from ebikessf.com http://www.youtube.com/watch?v=6kcLWncvx5o I think MAC's have the third version now.

http://www.ebikessf.com/node/217 Note the sealing issue

I can get you BMC hubs at least $30 less than ebikessf. Quantities even less and maybe shipped direct from India. PM me. I am a promotional link not a business yet. These motors you see are at my home for sale. V3T and V3C.
 

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