As the Hub Motor Turns and the LiPo Fire Burns. New packs running great.
https://www.ebay.com/itm/20-inch-QR-whe ... 3d8419b2e0
I just learned something just a few minutes before reading your post. A dual drive hub.
I did not know that was the official name for it. A flip flop hub wont work. I know that because I had to spend 120 bucks on a new Currie wheel to mount the 750 watt gear reduction motor.
The big thing now is I am facing the same problem as I was back when I first started this post. I live upstairs. It was the second floor back then and now is a third floor attic. Way too many steps to lug a heavy dual suspension 26" steel frame bike.
The chances are very good that I might have to wait another year before travel restrictions will allow me to go to NY and get my stuff. I still don't have a car on the road let alone a truck to haul the stuff and a moving company is around 1,600 bucks to load and haul it here.
So I am left with a lot of time on my hands and have enough 36V packs to run the 1,800W brushless motor I have sitting in my hallway for 36 volts and 1,350 watts and 33 mph gearing. I don't have any major hills so can get away with 33 mph 48 tooth sprocket for a 20" wheel.
I spoke with a guy from Kings custom sprockets a couple days ago and can get one which will bolt to a disk brake. However I will still need to get a mountain bike, Something cheap which is smaller and lighter for the stairs. For mounting the motor I will need at least 4-1/2" from the seat post to the rear tire. 5" or more would be ideal. The motor is 4-1/4" in diameter.
I am thinking a 24" bike with disk brakes and pull off the rear wheel and use the 20" rear rim with a freewheel and disk brake for the wheel sprocket. I can run a metal bracket for rear U brakes and the front will keep the factory 24" wheel with disk or U brakes. It will probably be cheaper for U brakes. I don't like V brakes.
I am not using wood to mount the motor. I will use heavy duty steel and get a 3/4" electric drill and steel drill bits at Home Depot. I now have an electric face mask from China. It took about two weeks to come in the mail so since COVID19 only lasts a few days outside the body I guess I am good. I still have my cloth mask and face shield so Wall-Mart and Home Depot are now an option for me.
I always struggled with chain building so might have a bike shop cut the chain but I think I can manage the rest. I don't really want to use #40 chain and defiantly wont use #25 or 8MM. I think standard bike chain would work and Kings custom sprockets have the best deal on standard bike chain sprockets
I can also get a 11 tooth standard motor sprocket from electric scooter parts. I am not sure what is on there now. I might get a 24" bike from Wall Mart . com or e bay. I am looking at around 100 bucks but the most important thing is the 4-1/2 to 5" clearance to mount the motor to the bike frame between the seat post and rear tire.
It might be close to the same weight as I have now but with a 20" wheel on the back and a 24" on the front I might not have to take the front wheel off like I do now to make the stairs. However disk brakes for the front is preferred so I have that option for going up and down all those stairs.
As far as any help with this I am looking for a great deal on a 24" mountain bike preferably with disk on front and quick release and a great deal on a 20" rear rim with disk. Or if they even exist a dual drive 20" hub. It would be cheaper to order a freewheel sprocket from electric scooter parts than dealing with Kings custom sprockets.
I have decided that I am going to wait on a 60V controller and huge 60V pack for 43 mph. When I get my storage I will take the 750W gear reduction motor off the Currie and use it for the 24" bike and put the 1,800 watt brushless on the currie and then build the 60V pack and order a controller and custom sprocket for 43 mph. That is like a year down the road probably.
Thanks and any help will be appreciated.
I build e bikes. There not always pretty or practical but sometimes they work, at least for awhile. Immortality is not a dream but the future of our evolution. We were given the tools to forge our own destiny. We were created in gods image and shall evolve to live forever.