A couple of years back as a first step into electric bikes I purchased a Hill Topper kit form Clean Republic. I purchased the 24v/7ah SLA version of the kit. It was ok, but I wanted more range from it, so I upgraded the battery to 14ah.
I then concentrated on my other bike, and the HT sat around not doing much.
Last week I acquired a cheap 36v lithium battery that needed some attention.
My plan was to buy a 36v controller and pair it with the HT motor (an 8fun unit).
Just for a quick test, I connected the battery to the 15a, 24v HT controller, and went for a spin.
It goes like the clappers. Not massively torquey, but plenty of speed. I would guess 20-24 mph.
The controller does get warm, but not too warm to touch. I have mounted it externally to ensure maximum cooling.
Conclusion: You probably can run a 24v Hill Topper kit at 36v.
I then concentrated on my other bike, and the HT sat around not doing much.
Last week I acquired a cheap 36v lithium battery that needed some attention.
My plan was to buy a 36v controller and pair it with the HT motor (an 8fun unit).
Just for a quick test, I connected the battery to the 15a, 24v HT controller, and went for a spin.
It goes like the clappers. Not massively torquey, but plenty of speed. I would guess 20-24 mph.
The controller does get warm, but not too warm to touch. I have mounted it externally to ensure maximum cooling.
Conclusion: You probably can run a 24v Hill Topper kit at 36v.