1000W BMC testing

If there is so much trouble matching a controller, why are some vendors still selling the motor?

I've been waiting for ampedbikes to announce their geared motor, but it's mid July and absolutely no word from them. So, now I lean toward BMC but I want the 1000W motor.

Is there a controller that has been determined to be reliable for this motor, or at least work properly?
 
TPA said:
If there is so much trouble matching a controller, why are some vendors still selling the motor?

I've been waiting for ampedbikes to announce their geared motor, but it's mid July and absolutely no word from them. So, now I lean toward BMC but I want the 1000W motor.

Is there a controller that has been determined to be reliable for this motor, or at least work properly?
Click to expand...

Finding a controller is what this thread is all about. We are selling the motor because BMC says they will have a controller in August. Before anyone buys, we let them know the status of the controller. We have not sold any yet. Some vendors have. Iroise2000 reports having a Kelly that works, see that post previously in this thread. The Ampedbike motor is out, "sacman" on this forum has taken one for a test drive. EVTech is also coming out with some geared motors under their name.
 
dirtdad said:
The Ampedbike motor is out, "sacman" on this forum has taken one for a test drive.
Click to expand...
Not for sale on their site that I can find. Is that still to come?
 
Update: I got everything hooked up. It turns out the wiring was not quite right. Now it seems to work well at 36V, delivering about 22mph, but something is definitely wrong at 72V, it cuts in and out every second for a few seconds then shuts down. Looks like some smart protection circuit kicks in. I am doing further testing/investigation. This makes me think that 36V might not be working well either, really. This is why I test with a range of voltages, problems dont always show up at every voltage.
 
dirtdad said:
This makes me think that 36V might not be working well either, really.
Click to expand...
hi-powercycles reports 33 mph at 37v.

http://www.hi-powercycles.com/product.sc%3Bjsessionid=75F7D10CCAA8B01E8CBBCBB6D0A17BF0.qscstrfrnt01?categoryId=1&productId=17
 
TPA said:
dirtdad said:
The Ampedbike motor is out, "sacman" on this forum has taken one for a test drive.
Click to expand...
Not for sale on their site that I can find. Is that still to come?
Click to expand...

Just a quick clariffication... the AmpedBikes geared motor is NOT out for sale yet. Danny at AmpedBikes says they should be available towards the end of this month (front motors only; rears will be availabe in his next batch).

I got to try the final prototype of the new AmpedBikes geared hubmotor two weeks ago when I just went in to Danny Ray's shop to pick up a couple of his torque arms. While I was there he let me try out his final prototype geared motor that he had mounted to his own Trek mountain bike. Rides nice but I couldn't get a good feel of the motor's real potential because he only had it hooked up to 36V and he had no speedometer on the bike.
 
Sacman said:
dirtdad said:
... at 36V, delivering about 22mph...
Click to expand...

Is that with load or no load Dennis?

TPA said:
... hi-powercycles reports 33 mph at 37v.

http://www.hi-powercycles.com/product.s ... oductId=17
Click to expand...

I wonder if those speeds Hi-PowerCycles listed are with load or no load as well.
Click to expand...

That was with me as a load. Hi-PowerCycles has a video of their load test, see above.
 
electro ride claims 35mph no load and 30mph loaded at 25A. They say faster at higher amperage.

Someone else claimed the same and said it was gps verified, but I cannot remember who.

But, you are correct none of the claims are customer verified that I can see.
 
Hallo,

See my posts on page 2 above, for me with my ping battery 20Ah 48V that can deliver 2C continus max, i have 36 mph max speed and a max peak current of about 40A (limited by software configuration of my kelly controller). I'm not a seller, but a customer that have bought a bmc V3.
I'm sure with a lipo battery that can deliver more current, so more torque, perhaps we can go a litle faster ? (at this speed we need torque, while wind resistance is high).
With 48V, acceleration is very quick from 0-30mph (see the graph above page 2 for a 14 minutes ride), with a lot of stop and start.

Yann
 
Aww shoot, I thought this had been sorted out with the clock speed on the old infineon. I have a couple of 72v 45a infineons I bought from knuckles I was going to match with this. I have a few xlyte analogs I could try too. I'll just have to buy a V3 and join the fun!

-JD
 
Hello,

I already have a xtalyte 408 hub motor I use daily, the year round, for my commute with temperature down to -28c (-16F) and I am pretty happy with it for the last 4 years. I live in a pretty flat area and speed/torque wise, with my 48V battery, it is perfect.

But now i am looking for a lot more torkey motor as I will move to a more hilly area with roads upto 23%. For legal reason, I do not want to exceed 32km/h (20mph) and 48V battery. The controller I plan to use is my Infineon 12Fet, 48v/30A or I have the budget to eventually go with the Kelly one tested in this thread to get the 50A maybe to wake up the torque.

At this point I have read a lot of stuff on the two motors I consider: the BMC V2-T 600w and the 1000W V3 (geared). The Xtalyte5xxx are by far too heavy and I do not need such a power anyway.

Again, I not interested in getting high speed or lot of torque at high speed. My concern is to be able to climb 23% grade with minimal pedaling at low speed (10-16km/h so up to 10mph). I haven't seen a lot of feedback from people comparing the two motor torque a low speed at 48v so does anyone could share his experience.

Thanks
Fredo
 
Just checked electric-bikes.com. They mention that their BMC V3 1000W is a S (speed) version. For my need, the T version would be more appropriate and I am still wondering is V3-S has more torque at low speed than V2-T.
Anyone knows as well if a V3-T will be available ?
Thanks
Fredo
 
A question about torque arms vrs no torque arms for this motor. My new bike came with no torque arm on the BMC 1000 Watt V3 motor. On each side of the axle, inboard of the nut, there is a tanged washer whos tang rides in the open part of the dropouts and whos ID flats ride on the flats of the axle. If the axle nuts were to come loose, the tangs could theoretically turn about 10 degrees before contacting the metal dropouts because they are smaller than the opening of the dropouts. As long as the axle nuts stay tight, is this sufficient protection against turning an axle?
 
BVH said:
A question about torque arms vrs no torque arms for this motor. My new bike came with no torque arm on the BMC 1000 Watt V3 motor. On each side of the axle, inboard of the nut, there is a tanged washer whos tang rides in the open part of the dropouts and whos ID flats ride on the flats of the axle. If the axle nuts were to come loose, the tangs could theoretically turn about 10 degrees before contacting the metal dropouts because they are smaller than the opening of the dropouts. As long as the axle nuts stay tight, is this sufficient protection against turning an axle?
Click to expand...
Torque arms are definitely best to have but those torque washers are definitely better than nothing at all.
Stopping your axle from rotating past 10-degrees will definitely prevent your wires from twisting up and ripping apart.
 
BVH said:
A question about torque arms vrs no torque arms for this motor. My new bike came with no torque arm on the BMC 1000 Watt V3 motor. On each side of the axle, inboard of the nut, there is a tanged washer whos tang rides in the open part of the dropouts and whos ID flats ride on the flats of the axle. If the axle nuts were to come loose, the tangs could theoretically turn about 10 degrees before contacting the metal dropouts because they are smaller than the opening of the dropouts. As long as the axle nuts stay tight, is this sufficient protection against turning an axle?
Click to expand...

Key phrase may be "as long as the axle nuts stay tight." The other day mine came loose after some rough trail riding.
 
I was reading something here a week or two ago about someone having trouble keeping the axle nuts tightened that's why I have the concern.
 
Fredo said:
Just checked electric-bikes.com. They mention that their BMC V3 1000W is a S (speed) version. For my need, the T version would be more appropriate and I am still wondering is V3-S has more torque at low speed than V2-T.
Anyone knows as well if a V3-T will be available ?
Thanks
Fredo
Click to expand...

I asked electric-bikes.com this a while ago, and they reported that they thought the V3-S had more Torque than a V2-T.

My V3 from user ebikes-sf was paid for last Friday, and should be laced and shipped before Wednesday! Yay! Ultimately I want to put it on a full suspension frame, but I'll have fun testing it on a hardtail for now.

-JD
 
I tried 1000w motor with 35A 24-72V Crystalyte analog controller on my bike that previously had 600w motor. 1kw works just fine with 35A Crystalyte controller. At 37 volts, 35 amps, it goes about 28mph max. It felt slightly faster and torquer that 600W motor, if there is a difference at all, it's insignificant.
 
The difference is it can draw more amps and deliver more performance, sort of like the X5 series. You need a bigger controller to make it worth while. If you only have a 35A ctlr, the 600W is the way to go. It was pretty nice with the 65A infineon - before it got the controller really hot.
 
ebikes-sf said:
I tried 1000w motor with 35A 24-72V Crystalyte analog controller on my bike that previously had 600w motor. 1kw works just fine with 35A Crystalyte controller. At 37 volts, 35 amps, it goes about 28mph max. It felt slightly faster and torquer that 600W motor, if there is a difference at all, it's insignificant.
Click to expand...

What a tease, Ilia! I can't wait until my rim comes in so you can send me mine!

:D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D
 
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