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I totally get where you're coming from. That's definitely something to think about.

Are you using a hub motor with a throttle on it? When you're riding, do you mostly pedal or do you rely more on the throttle to give you a boost? I also want to know is the controller built right into the motor?

I don't think making a product like this is quite easy, but it doesn't mean we shouldn't keep innovating. When you mention the 'elevate conversion kit', are you talking about something like Bimotal? Those seem more geared towards MTBs.

I refer to the EU's 25 kph. I've been looking at a lot of converting kits from UK brands before. I'm not sure what the usual speed limit is for motors on Ali Express, and if it's possible to remove the speed limit on the motor myself.

Mahle's motor can deliver torque gradually and actually adjusts its power based on real-time conditions, like climbing or on flat roads. It might avoid those sudden jolts of power that stress the bike frame.

That’s why I’m looking for a light motor.

When I’m cycling, I usually ride faster than the motor’s speed limit for more than half of the time. The only time I struggle is when I’m climbing hills and I want some e-assist. I saw on this forum that parts of other people are in the same boat as me.

I mean, Mahle’s edrive sysytem only available on complete e-bikes. But it would be great if there was a standalone rear hub motor, similar to Mahle, that could fit any bike with a 142mm thru-axle.

Ah ha! So it all comes back to the original intention of the design. If it's just about making yourself seem stronger during group rides, no one would spend $5,000 on it.

feel the same way. It shouldn't just be large companies like Mahle to design something like this. Otherwise, we'd have no other option but to buy fully assembled e-bikes with Mahle's e-assist systems.

Yeah, I've looked into that design. It's around $3,500. It's completely hidden inside the seat tube. But the installation is really complex—no way we could do it ourselves. So I think the price and difficulty in installation might be why it went under.

Exactly, it all depends on what people need. Personally, I don't need a super powerful motor--250 w is enough. And for battery range, I've seen in this forum that the majority of users only use e-assist for about 30% of their rides. So I think the required range actually varies from person to...

See what you're saying. My friend said there's still room for reducing the size from the structural point, and technically, it can be done. Moreover, Mahle products are not so versatile. If we could create something that's more versatile, that would be awesome.

Wow, you have a lot of experience with this! When you say ‘we were just asking it to do something it wasn’t designed for,’ apart from all the climbing and long hours, what else do you think was pushing it beyond its limits?

My friend and I also talked about the issues of heat dissipation and durability. He said those can all be figured out.

My engineer buddy and I have been talking a lot about this stuff. Maybe we can dive into some technical details later.

I agree... there are definitely a lot of challenges. But I also wonder if it’s partly because the demand for small-torque motors is pretty niche in the overall ebike market.

I hadn’t looked into the Gocycle motor before — I’ll check it out, thanks!

For now, I’m not really looking to buy a whole new bike — I’m more interested in exploring what’s possible with a conversion kit. I don’t necessarily think what I’m hoping for is impossible or doesn’t exist.

I've done quite a bit of research on e-bike kits and have some thoughts. As I mentioned in my previous post, I’m looking for a kit that is compatible with my lightweight road bike (Scott Addict). A few days ago, I tried out the Scott Addict eRIDE 30 and confirmed that the torque from the Mahle...