I have moved about 18 miles from Erie to a small town. The 35 mile range of the e-bikes became a problem, as there are some places I like to go that are now(round trip) beyond the full charge range. I therefore changed the red e-bike to a staton friction drive/Honda 33.5cc engine. The motor controller on the green e-bike gave up the ghost over the Winter, when it wasn't even in use, so I converted the e-bike kits direct drive hub motor to a Bafang BB02 center drive unit of 36 volt, 500 watts. The Bafang unit seems to be of fairly good quality and the acceleration is brisk, much better than the 750 watt hub motor and even stronger than the gas bike. I am very impressed wit the Bafang, but there are two little things I wish I could change. The "throttle" is an on-off switch and the top speed is electrically limited to about 20 mph. I would prefer a graduated throttle and a top speed of about 25 mph. The motor is only 2/3 horse, but operating through the bike's seven speed derailleur, 25 would be well within it's capacity. There are 3 levels of 'assist', so that is the primary means of speed control. meh
I much prefer the Subaru Robin EHO35 engines I have used in the past to this Honda GX35. The Honda is physically much bigger, heavier, and a lot louder than the R-S. They have about the same power, but the R-S oil always came out clean, even the first oil change. The Honda oil is coming out dirty and gritty, even after 3 oil changes, and the Honda takes several pulls(as many as 5) to start and a while to warm up and run smoothly. The Subaru started first or second pull every time and ran smoothly and strongly, even cold. I am disappointed.
Installing the Bafang was easy. The geared motor, controller, and bottom bracket-crank set are in one unit. You remove the crank set, the bearings and shaft, clean up the old grease from the bottom bracket, then slide the Bafang unit in, attach the new cranks supplied, and re-attach your pedals. A bit of wiring, install the new brake levers, and away you go. The unit has no instructions, so you have to go to youtube for the very good video instructions. I have a NuVinci CVT hub being laced to a rim and will install it on the Bafang motored bike as soon as the wheel is complete.
I much prefer the Subaru Robin EHO35 engines I have used in the past to this Honda GX35. The Honda is physically much bigger, heavier, and a lot louder than the R-S. They have about the same power, but the R-S oil always came out clean, even the first oil change. The Honda oil is coming out dirty and gritty, even after 3 oil changes, and the Honda takes several pulls(as many as 5) to start and a while to warm up and run smoothly. The Subaru started first or second pull every time and ran smoothly and strongly, even cold. I am disappointed.
Installing the Bafang was easy. The geared motor, controller, and bottom bracket-crank set are in one unit. You remove the crank set, the bearings and shaft, clean up the old grease from the bottom bracket, then slide the Bafang unit in, attach the new cranks supplied, and re-attach your pedals. A bit of wiring, install the new brake levers, and away you go. The unit has no instructions, so you have to go to youtube for the very good video instructions. I have a NuVinci CVT hub being laced to a rim and will install it on the Bafang motored bike as soon as the wheel is complete.