BMC hub motor Ebike conversion kits from $400

[ebikes-sf]

There was some delay in production of BMC 50A controllers, I should have them after January 10th.

[ebikes-sf]

To address questions from a few people about differences between different BMC motor models (to my best knowledge):

600 w torque (V2T)
Coils are made out of thinner wire and have more turns therefore motor has more torque at lower speeds but has lower top speed than V2S or V3. Top speed in 26 inch rim @ 50V 30A is about 24-26mph. Motor tends to heat more than V2S and V3 while climbing hills (at lower speeds).

600 w speed (V2S)
Coils are made out of thicker wire and have less turns than V2T - this is the only difference. Top speed in 26 inch rim @ 50V 30A is about 29-31mph.

1000W (V3)
Coils are made out of thicker wire and have less turns than V2S. Gear/clutch assembly mounting has improved from V2. Top speed in 26 inch rim @ 50V 30A is about 30-32mph. This motor is able to withdraw more current/energy (at higher speeds) than all other BMC motors. I have not yet tested it with new 48v 40A controller - i should be able to do so and post results around Jan 17th.

[dannyboyohyeah]

I see this is a rather old post. Wondering if this kit is still available???? It's exactly what I've wanted ...but I have one question...between the torque version and the speed version, would you say the speed version is still capable of climbing hills well? What are the top speeds (on the flat) for each of these for example, at 48v? Thanks

[The Mighty Volt]

Hi there

I own a 48v 20 AH duct-tape battery and a 36v 20Ah battery.

I am looking for a very torquey but also very reliable rear brushless hub with internal gearing.

I would be grateful to hear of any offers you have that suit my batteries

Is the original offer still available, and will it suit my battery packs?

Many thanks

PS do you ship to Ireland?

[ebikes-sf]

Yes, I have BMC 400W (V1) front. BMC 600W (V2) Torque or Speed rear, and V3 motors and kits available. I can ship worlwide. For your batteries I recommend a kit with BMC V2 speed or torque motor, I prefer speed motor - less torque at lower speed (still plenty to deal with hills) but higher top speed. The original offer still stands please see first page of this thread for details.

[HTB_Terry]

I just tested one Ilia's bikes on some San Francisco hills. He had his daily commuter bike, a rather clunky looking rig consisting of an old frame with the extra cycle attachment. I was not exactly blown away by the looks. Hidden under the pannier bags was the BMC 600W speed version. What a sleeper! The acceleration off the line was quick. I flew up the first hill, maybe 10 deg. The next hill was a little steeper, maybe 15%, and again it cruised up with light pedaling. I was getting impressed. Then we came to a real steep hill, maybe 18%, maybe even 20%. It made it up with moderate pedaling in a mid to high gear. Very impressive indeed. What was interesting, it only seemed to be drawing 20-25 amps on the hills. It was a 48V pack topped off at 50V so it was pumping quite a bit of power, but seemed to be satisfied with that and demanded no more. As we hit a straight away, I hit the throttle and the current jumped to 30-35 amps during acceleration. The speed was scary and I was too chicken to go full throttle. The torque of this motor was exceptional and I personally would have no need for the torque model. Maybe if you weighed 250 pounds and carried a huge cargo, you should consider it. I would like to see how it performs with a 36V pack. Ilia said he was working on a new cargo/commuter bike which sounded perfect for SF. I'm sure I will end up purchasing a few of these kits for some high end builds. I can recommend the BMC600-S for those killer hills and also Ilia who is the resident expert on them.

[Canis Lupus]

I just tested one Ilia's bikes on some San Francisco hills. He had his daily commuter bike, a rather clunky looking rig consisting of an old frame with the extra cycle attachment. I was not exactly blown away by the looks. Hidden under the pannier bags was the BMC 600W speed version. What a sleeper! The acceleration off the line was quick. I flew up the first hill, maybe 10 deg. The next hill was a little steeper, maybe 15%, and again it cruised up with light pedaling. I was getting impressed. Then we came to a real steep hill, maybe 18%, maybe even 20%. It made it up with moderate pedaling in a mid to high gear. Very impressive indeed. What was interesting, it only seemed to be drawing 20-25 amps on the hills. It was a 48V pack topped off at 50V so it was pumping quite a bit of power, but seemed to be satisfied with that and demanded no more. As we hit a straight away, I hit the throttle and the current jumped to 30-35 amps during acceleration. The speed was scary and I was too chicken to go full throttle. The torque of this motor was exceptional and I personally would have no need for the torque model. Maybe if you weighed 250 pounds and carried a huge cargo, you should consider it. I would like to see how it performs with a 36V pack. Ilia said he was working on a new cargo/commuter bike which sounded perfect for SF. I'm sure I will end up purchasing a few of these kits for some high end builds. I can recommend the BMC600-S for those killer hills and also Ilia who is the resident expert on them.

What was the wheel size? I have a 20" rear wheel. It sounds as if I ought to be going with the speed version given the smaller wheel size will help with torque in any case.

[The Mighty Volt]

Is spoking these things difficult? What sort of spokes and alloy combination could I use?

[nicobie]

Is spoking these things difficult? What sort of spokes and alloy combination could I use?

I'd take it to a bike shop and have them do it. It's not that expensive.

For a 2X pattern I think the spoke length is 216mm in a sun rhyno lite 26" rim, but Ilia can help you on that.

[The Mighty Volt]

Is spoking these things difficult? What sort of spokes and alloy combination could I use?

I'd take it to a bike shop and have them do it. It's not that expensive.

For a 2X pattern I think the spoke length is 216mm in a sun rhyno lite 26" rim, but Ilia can help you on that.

Would you believe, I was trying to avoid taking ANY of my ebike stuff near any bike shop........let them get their own sales ideas!! Also, they happen to do all the work for the Police in my area {we have Police on bikes in Urban areas, they patrol pedestrian walkways etc}..and I dont want attention drawn to myself.

That said, thanks for the response.

[ebikes-sf]

I finally received BMC 50A controllers. Running V3 at max power, over 2000 Watts, caused insulation on motor wires to melt in less than 2 minutes - started this thread: http://endless-sphere.com/forums/viewtopic.php?f=4&t=15335

I'm actually impressed with controller's performance but it should be used very carefully. Controller has two limiting switches (details below) which I didn't get a chance to test. I wish it supported direct plugin cycle analyst to allow setting soft current limit. Be aware that controller doesn't have a power switch, up on connecting controller to battery, it arcs quite a bit and can melt corners of battery to controller connectors.

[999zip999]

Hi,Is that a picture of gear redution that you replace had to replace mine after it spun it up a dirt hill. It wasn't that hard need a 3 arm puller. Running 36v-72v 40amp. cristalyte controller to many amps. Should be 30amps. or less Yes a cycle ans. is a good thing! How much for a laced wheel? I do like my set up don't like the adapter wires between controller and wheel yes those 3 wires.

[The Mighty Volt]

Hi there a, could I have a quote for postage on this item from the USA to the Republic of Ireland? Many thanks.

[REPROMAN1966]

Hello
I would like to know is this deal still good?...& if so how would i place an order?

[The Mighty Volt]

Hello
I would like to know is this deal still good?...& if so how would i place an order?

I feel like shouting too. I thought they were trying to sell stuff here???

[TPA]

As far as I can tell, Ilia only checks this forum occasionally. Send him a PM. This will also go to his email, which gets checked more frequently.

[The Mighty Volt]

As far as I can tell, Ilia only checks this forum occasionally. Send him a PM. This will also go to his email, which gets checked more frequently.

Coolio...thanks for the heads up!

[electrikiwi]

I just want to praise illia I purchased one of these kits and it is every thing promised!! illia communicated well throughout the transaction especially since I live in New Zealand. Anyway just want to thank illia for all his help and say to others this is a great deal.
electrikiwi

[ebikes-sf]

Guys, thanks for your feedback, really appreciate it!

And sorry for delayed response to this thread. TPA is right, I only look at this thread occasionally, but I usually respond to PM or ibrouk@hotmail.com within 24hrs (unless I'm out of town). Also, please feel free to call 415 595 6417.

Update:
V2S, V2T, V3, 35A Crystalyte controller, CA, throttles are available. I also have Crystalyte cruise control and break handles for extra $35.

Currently I'm working with Justin from ebikes.ca to hook up CA to 50A BMC so that CA controls the throttle signal (rather than throttle override). Once it's figured out (will share details), I will be offering a kit that includes BMC V3 with modified phase wires, CA and modified BMC 50A controller. Stock V3 and 50A controllers are available now but both are likely to burn when operated at full throttle. Need a couple more weeks.

ilia

[fany]

I have a different controller with the same motor and at 1000w for ½ mile the motor isn't even warm. I run mine @1500w all the time with no heat problems. Max watts shown on my watts-up is 2400

Nick

Could you please tell what your controller is?
As you may know,many controllers working with BMC V3 motor will get very hot.

[nicobie]

I use a 36v -72v 35a clyte analog controller that I bought from Ilia. I added a few cheap computer heat sinks and stuck them on the top of the controller and now everything runs cool as long as the controller is not inside a bag and is exposed to the air.

This is on a v2-s.

[oatnet]

oops

[nightowlgk]

Newbies and Tidal Force /E+ refugees , look no further, Ilia is the best source, IMO, for BMC/geared, reliable motor kits that blow away the vast majority of hub motors.

His followup and service on warranty issues has gone beyond the call of duty. - I blew a clutch on a V2 Sp. The fact that he and Justin at ebikes.ca are collaborating, is proof that he is on the front edge of making things work right.

NGK

[Dan]

NGK,

WHy do you think the BMC design is better than a Tidalforce ot E+ system?

Dan

[ebikes-sf]

Some cons and pros of geared hub vs direct drive hub like crystlyte, tidal force, golden motor, A2B, etc.

Pros:

Higher torque especially at low RPMs

More top speed

More efficiency due to higher motor speed

More power per weight ratio

Freewheeling

Cons:

More moving parts = less reliablility

Higher cost

No regeneration (because of freewheeling) - however regenration from smaller hub is insignificant anyway

Not for heavy offroad use

General user experience after trying geared motor like BMC is: going back to direct drive is a big step down regardless of cons listed above.