Hi all, I am a first time poster from Australia and after reading this forum for a while I ordered the 70cc motor and today it arrive. My build will be on my old road bike, like a 20 years old steel famed Northern Star with 27inch wheels. I have learned a lot already from reading this forum and will be incorporating a lot of the tips and advice from other posts into my build. However I have a couple of questions that I really need some advice on.
First is if I set the motor as low as it will go in the frame the peddles hit the side of the motor. I am not sure if the best thing would be to raise the motor up the frame so the pedals pass under the motor or try and get a wider crankshaft. My first choice would be to raise the motor as it’s just easier and there is plenty of room to raise it. I am not sure if mounting it higher in the frame would be of a concern in regards to chain angle to sprocket issues. Also I don’t even know if wider crankshafts are available?
Also I pulled the clutch in and turned by hand the chain sprocket in the motor. I noticed that it was extremely hard to turn. Not binding or anything just tight. Do these loosen up with use or are they always that tight? Can these bikes be realistically ridden around with out the motor running?
I will post some pics when I get the build finished. Hope to hear some advice soon.
First is if I set the motor as low as it will go in the frame the peddles hit the side of the motor. I am not sure if the best thing would be to raise the motor up the frame so the pedals pass under the motor or try and get a wider crankshaft. My first choice would be to raise the motor as it’s just easier and there is plenty of room to raise it. I am not sure if mounting it higher in the frame would be of a concern in regards to chain angle to sprocket issues. Also I don’t even know if wider crankshafts are available?
Also I pulled the clutch in and turned by hand the chain sprocket in the motor. I noticed that it was extremely hard to turn. Not binding or anything just tight. Do these loosen up with use or are they always that tight? Can these bikes be realistically ridden around with out the motor running?
I will post some pics when I get the build finished. Hope to hear some advice soon.