Bafang Ultra in a cruiser frame?

[jeffcrilly]

Anyone building an Ultra motor in a cruiser frame?
I’m thinking this would make a good commuter if dialed down to 750watts.
With an off the shelf frame there would definitely need to be some customization.
(Remove the BB and weld in the ultra bracket.)
The ultra bracket is (iirc) aluminum, most cruisers are steel; so that’s one problem, yes?
The cruisers typically dont have rear disc, so caliper tabs would need to be welded on.
Up front I’m thinking a suspension fork could be used.

Thoughts?

I really liked the torque sensing performance of the Bafang Max, but also would like a throttle.
The ultra seems to be ideal.
I’ve been considering getting a Biktrix FS Ultra (and I don’t really need fat tires), but then I got to thinking about adding a BBSHD to a cruiser as a simpler/cheaper route, but would like to get torque sensing also.

 

[TForan]

I have a Biktrix Ultra with 3.5 inch street tires and it is a great commuter.

 

[keithd]

@TForan

Do you use street tires?

It would be nice if the Stunner came with the Ultra motor

 

[TForan]

@TForan

Do you use street tires?

It would be nice if the Stunner came with the Ultra motor

Just switched to Vtire Speedsters. 3.5x26. Big improvement regarding noise and rolling resistance.

The Stunner is a hub drive.

 

[keithd]

Just switched to Vtire Speedsters. 3.5x26. Big improvement regarding noise and rolling resistance.

The Stunner is a hub drive.

Stunner is mid drive with 7 speed internal hub Shimano Nexus gears

I can see where the Speedsters would make a big difference.


https://www.biktrix.com/collections/bikes/products/biktrix-stunner?variant=54785500181

 

[TForan]

Stunner is mid drive with 7 speed internal hub Shimano Nexus gears

I can see where the Speedsters would make a big difference.


https://www.biktrix.com/collections/bikes/products/biktrix-stunner?variant=54785500181

You're right. I was thinking about the Stunner LT. The Ultra has too much torque for the Nexus.

 

[keithd]

"The Ultra has too much torque for the Nexus."

I wonder how the Nuvinci would handle the torque

 

[TForan]

"The Ultra has too much torque for the Nexus."

I wonder how the Nuvinci would handle the torque

I don't think it will, from what I've heard.

 

[harryS]

Our 60 pound 500W geared rear hub beach cruiser will get up to around 28 mph. I think that's pretty fast for a bike where you grip the bars like you're playing Foosball. A BBSHD would take it over 30 mph, as would an Ultra. Take care, these are bicycles after all.

 

[keithd]

Our 60 pound 500W geared rear hub beach cruiser will get up to around 28 mph. I think that's pretty fast for a bike where you grip the bars like you're playing Foosball. A BBSHD would take it over 30 mph, as would an Ultra. Take care, these are bicycles after all.

28 mph is fine I am looking for climbing power in a comfortable commuter.

 

[David Cazzuto]

Anyone building an Ultra motor in a cruiser frame?
I’m thinking this would make a good commuter if dialed down to 750watts.
With an off the shelf frame there would definitely need to be some customization.
(Remove the BB and weld in the ultra bracket.)
The ultra bracket is (iirc) aluminum, most cruisers are steel; so that’s one problem, yes?
The cruisers typically dont have rear disc, so caliper tabs would need to be welded on.
Up front I’m thinking a suspension fork could be used.

Thoughts?

I really liked the torque sensing performance of the Bafang Max, but also would like a throttle.
The ultra seems to be ideal.
I’ve been considering getting a Biktrix FS Ultra (and I don’t really need fat tires), but then I got to thinking about adding a BBSHD to a cruiser as a simpler/cheaper route, but would like to get torque sensing also.

I am a Tampa/Clearwater Florida based Electric Custom Beach Cruisers are our JAM. The bikes you see are all sold but I have one of the blue bikes in red and the frame is being cut for the Bafang ultra it's 52V 1000W with 160 NM's of torque. Nothing on the market you can buy rides like a Cazzuto. www.cazzuto.bike

 

[David Cazzuto]

I am a Tampa/Clearwater Florida based Electric Custom Beach Cruisers are our JAM. The bikes you see are all sold but I have one of the blue bikes in red and the frame is being cut for the Bafang ultra it's 52V 1000W with 160 NM's of torque. Nothing on the market you can buy rides like a Cazzuto. www.cazzuto.bike