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- Jan 21, 2021
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- 3,259
Specifications: heel type: Front/Rear Wheel Motor: Brushless Gearless Material: steel, aluminum alloy, rubber Wheel Size: 26"x1.75" Width of Wheel Hub: no less than 1.2" Width of Tire After Inflating: no less than 1.6" Motor Power: 1500W / 48V or 1000W / 48V Motor Rotating Speed: 490 RPM Motor Torque: 45 N.M/74.5 N.m High Motor Efficiency: 88% ~ 90% I put it on a 27.5" full suspension mountain bike. I had to mount steel brackets to accommodate caliper brakes as 26" wheels. I was not impressed with the controller. Only 35 amp fuse and looks like 9 or 12 mosfets. It came with a skinny tire. I replaced it with a wider tire and had issues with it seating properly. Finally after deflating and inflating about 3 times it seated. It has 5 pedal assist levels but I never hook that up or brake sensors. I really like the control as like to stick to sidewalks and bike trails when a lot of traffic. The throttle is twist which I thought I did not like as used to a thumb. I do like the twist however and the control of speed and acceleration with the 5 power levels. The speedometer is in kph and hit 54 which is 33.5 mph. It will hit 35 with the skinny tires it came with and a lighter set up. Batteries and ebike and lighter rider. I weigh about 240 pounds. Basically I rode it one time. I also fixed the 20" ebike with the 1,800 watt motor which I put a huge rear basket and did laundry. After that I went right back to the 20" e bike with the 36V motor. I built a 3S - 3P Headway pack from used old 8Ah Headway cells. It is in series with two 5S - 8P A123 packs. 43V and charge with my 10 amp 43.6V lfp charger. I just prefer a small simple rear chain for everyday use. It is decent up small or moderate hills and charges great with very minimal balancing. 43.6V / 13 = 3.35V. About 75% average. I had a little fire a few weeks ago with the large 12S - 2P - 8Ah Headway pack. It was the 12S active balancer that ignited. It started smoking about two blocks from my house. The balance board caught on fire. I placed a metal pail over it to put it out as lfp needs external oxygen where LiCo has its own and will not go out. Why I run lfp. Further investigations revealed several cells reversed polarity. The 1.2 amp active balancer could not keep up with the charge and discharge cycles. Why I no longer trust active balancers or BMSs. I would do Bluetooth but expensive. I now use external balancers and charging 13S with a 12S charger seems to automatically balance the packs and am not having further issues. I had 9 decent Headway cells I never used and built the 3S - 3P pack. I also removed all the active balancers from the A123 packs and installed 3 amp fuses to every balance wire. I am currently externally balancing when needed. I have two 7S and two 6S external balancers. I have a 7S - 8P and two 5S - 8P, all with A123 - 26650 cells from Battery Clearinghouse for 56V which I used with the 1,500 watt hub motor and 1,800 watt brushless motor. 43V with the 36V 1,000 watt 20" chain drive. I am currently waiting on two 6S - LTO balancers and a Greentime 350 watt brushless controller for a 700c 500 watt front e bikeling motor for the front of a 700c Giant Cypress hybrid. It has a rear cassette 350 watt Bafang on the rear. I will have to wait two weeks. The LTOs will go on the full suspension (bottom bar) with the 1,500 watt hub motor for a lower center of gravity. I want to build a 6S - A123 pack I can run in series with the 7S pack as I mostly run 43V so can give the two 5S - 8P packs a break so all my lfp packs age about the same. That will be next month. Thanks. LC. out. |