by MattZ » Sep 05 2021 2:13pm
I looked at dual motors briefly but figured that would kill range. So you think a little bigger controller will help...
I'm looking at them on Amazon but sellers aren't real clear on amperage, in many cases you can't tell if they're referring to rated amps or max amps. I suspect a higher rated controller will find the next weak link in the chain but if it's unusable it might as well burn up. What's FF?
I may go back to square 1 and start over. While sitting on the side of the road a couple came by on Aventon bikes. They're much lower powered but they went right up that hill no problem. The guy said it climbed pretty much anything. I prefer to build but I'm thinking a geared hub motor on a 26" fat tire bike might work better for me. I don't need to go real fast, 30 does the trick. Not sure if they go that fast though, and anything over 750w seems hard to find.
FF is
Statorade Ferrofluid for Cooling Direct Drive Hub Motors. click on the link to find out more, they explain it better than I can.
You have figured out "next weak link in the chain". Welcome to eBikes we are always looking to fix our weakest parts. I like to over build a little to extend the life and OP like to push the limits.
You could had a weak controller but if your going to buy a new one then upgrade a bit and don't max it out. One thing to watch for is heat. If over heating then let it cool off. This goes for motors and batteries as well as controllers.
Motors run cooler when not lugging or running below 50% of max speed, this draws a lot of amps. Some people like the mid drives to use the bike gearing to pull hills. With DD motors get one that operates in your riding range. You balance motor size and voltage, Kv and wheel size.
The bigger guys here try to build bikes from a different point of view. We want strong wheels, plenty of torque to get moving, which is built for lower speeds. Big motors in little wheels will do the trick.
I'm just filling up the page now. :lol:
I was suggesting to get a 35A controller and run it at 30A. I don't know your motor but adding a coolant to the motor will let you run it a little harder with out over heating it. Then when you break it again can upgrade again. If you get the right setup and learn your bike it will last you many years. I worry about humidity eating and rusting away at my trike.