Is there a 48V 1000W hubmotor with disc brake 4 FRONT wheel?

[Little-Acorn]

Is there a 48V 1000W (or near there) hub motor for a front-wheel installation, that can mount a disc brake?

I've seen a few ads on Ebay for conversion kits for REAR wheel installation, that have disc brakes. Their manufacturers have told me that they only have disc brakes on rear hubs, not for front hubs.

Is that universally true? Does anyone know of a front hubmotor that can take a disc brake?

 

[el_walto]

Ezee at 20A 48V is what i have on my bike.

It pulls 800-900Watts

http://ebike.ca/store/store_ezee.php

 

[dogman dan]

Don't the clyte x5's come disk compatible now? Get one in a frontie. Hope the forks are strong.

 

[Drunkskunk]

most of those Ebay 48V 1000w motors Aren't 1000watt motors.
They come with 48volt, 20Amp controllers meaning they can peak at almost 100 watts. Most of them are probably 500 watt motors, and if you go looking for a comparable motor from a reputable dealer, you'll want to look for 500 watt motors for something similar.
Clyte and Nine Continent both make one. Others do as well.

 

[The Mighty Volt]

most of those Ebay 48V 1000w motors Aren't 1000watt motors.
They come with 48volt, 20Amp controllers meaning they can peak at almost 100 watts. Most of them are probably 500 watt motors, and if you go looking for a comparable motor from a reputable dealer, you'll want to look for 500 watt motors for something similar.
Clyte and Nine Continent both make one. Others do as well.

Hi there, how do I test to see what the correct, actual rating for my hub is? I have one of "those ebay motors", albeit it is rated at 700w 36v.
THanks.

 

[Russell]

You needn't be overly concerned about the "rating" of your motor unless you plan to run it flat out all of the time. As Drunkskunk said you most likely have a 500W motor. There is only one, maybe two motors made for bikes which are rated 1000W from the manufacturer, one is the new V3 from BMC which has yet to prove itself, and while I haven't seen an actual rating placed on it the Crystalyte heavyweight 5300 series would likely qualify. The motor rating is supposed to be the power the motor can output continuously which means there is usually a good deal of headroom to run at higher power levels for shorter periods. Often sellers will play fast and loose with motor ratings and take a base 500W motor and call it something higher based on the input power to the motor which is the nominal voltage of the battery times the maximum current limit of the controller to come up with their “750W” and “1000W” motor kits, which of course is incorrect but it probably sells more kits.

If carried to extremes I could even call the motor in the picture below a 1000W motor because I have run it at 48V/22A for 1057W peak but in reality it’s a 250W motor.





Can you post a picture of your motor and tell us the manufacturer or what vendor sold it to you?


-R

 

[Drunkskunk]

Hi there, how do I test to see what the correct, actual rating for my hub is? I have one of "those ebay motors", albeit it is rated at 700w 36v.
THanks.

there are a couple ways to get a close estimate.
Weight is one. a normal brushless gearless hub motor will weigh 3 pounds per 100 watts of rating, roughly. a 15 pound motor is going to be a 500 watt motor. 30+ pounds, its a 1000 watt.
Thats a realy rough estimate, but will get you close enough.

The other is to measure with a watt meter. ride the bike at 36 volts and full throttle on flat ground andno wind. It will peak at the controller's max rating while getting up to speed, but after reaching max speed, it will settle into a lower wattage. That wattage is roughly the motor's rating.

Another is to look on the controller. if the controller says 700watts, then thats a max wattage rating. the motor wouldn't work very well if it needed 700 watts to cruise and the controller could only give it that. it would not be able to accelerate very well at all, and the controller would be very short lived trying to put out it's maximum all the time.
Generaly, a controller will be rated a minimum of 1.5 times more than the motor's rating. So 750 watts would be the normal minimum for a maximum output on a controller used for a 500 watt motor, but 700 is close enough.