Does anyone know where to find a CVT manufacturer?
I'm having trouble finding anyone who purely manufactures CVT's. I can find plenty of scooters and snow mobiles which have CVT's, but nobody who purely builds or sells them. I'm looking for something in the 15HP range.
I know there was a fair amount of information on the last site about this. Is there any way to get to that info?
You might want to check out my post on "Aftermarket Technology Corp. Announces Supply Agreements With Three Customers for NuVinci (TM) CVP Technology."
I just received an email from NuVinci there is a disclaimer on the email which prevents me from sharing everything but here is what they had to say. The NuVinci™ CVP hubs will soon be available from Seattle Bike Supply; should be within the next 30 days, and more distributors will be added in the coming months. This is not a quote but the facts are from the email. Here is part of the specifications they sent.
The NuVinci sounds like it will be great for bikes. It will most likely self-destruct at well less than 15hp.
Here's one I found on a quick search:
It says it bolts to a 6hp motor, but I'm not sure what max would be.
It might be possible to adapt one from a snowmobile or gas scooter.
Fallbrook Technologies - Nuvinci
They have a developer kit of their older model CVT (B17). The newer model (N360) does not have a controller kit yet.
BTW - I work for Fallbrook Tech as a Test Engineer, and I focus particularly on the bicycle products.
I can answer most questions about so long as they don't violate NDA agreement, proprietary information, etc. etc. so if I am seem reticent about revealing certain information you'll have to forgive me in advance for covering my derriere.
Anyway, I can tell you that the hp limit mentioned above is conservative. The older model (current at the date of that last post) was built like a brick $hithouse. What was more important was not exceeding the torque limit, which would definitely cause problems. This is more of an issue with ICEs than electric motors. I've seen ICE apps rip them to shreds, but that was with a chain and no cush drive (bad idea), so those power strokes were simply hammering the heck out of them. HP limit maintained, torque limit exceeded. I personally would use a cush AND a belt.
THe newer models are quite a bit lighter in weight, more optimized for the bicycle application, and still meets the specs as given, again conservatively. I can't tell you the upper limit we've tested to, but it definitely exceeds.
I ues the older model in my powered apps (I don't care about the kg weight with a motor pulling me), which are all electric. I would still use the newer one if I could, but they don't fit with the scooter wheels I use.