This motor mounted onto my Sun Baja Cruz 7 speed perfectly. I got the 100mm width. No clearance issues anywhere, which I was AMAZED about. Chainline was perfect, no chain rub on tires(3.5inch) I did have to lengthen the chain though, I went from a 32 tooth chainring to a 46tooth. I can pedal around effortlessly in PAS level 2, top gear, at 25mph for longer than my a** can handle. But even better I can put my 2 year old boy in the child seat and we cruise around all day even up STEEP hills never even sweating. I am so happy I built this EBike
Wheelectric such fun
I'm 67 years young and I've been looking for something to have fun with. I found it with a Diamondback Overdrive Sport 29er and a Bafang BBSHD. I paired the bike and motor with a LUNA Eclipse 42T chain wheel and a 52 volt 13.5 amp hour battery. This was a real easy build. The bottom bracket is 73mm and it has a 9 speed nest at the rear wheel. To get the front gear centered with the rear nest all I had to do was space the motor 1mm away from the bottom bracket. The battery is the Dolphin type and was bought for a RAD Rover spare battery which it works well with. The battery came with a spare mount and got me thinking about building a bike of my own. The mount fit perfectly on the water bottle screw bosses. All I did was to use a stronger screw and took a couple of washer which I filed a little on two side so it would fit in the grove on the mount just to make it a little stronger. All the extra screws and washer came with the motor or chain wheel. I want to thank Joel and all the people at LUNA Cycle who were very patient and helpful to someone who had no idea what he was doing. Keep on rolling and having fun!!!