Hey everyone.
I have started reading a bunch of previous threads here.
Some of them seem to end without a working bike. Some of them seem to be ongoing projects. I don't want to spend two years and still have parts all over the shed.
Background:
I bought an old 90's trials bike, and it has one problem after another. Initially it was to be the project bike, do a top end rebuild and have something for friends to join me. However, it's a total dog. The further I dig into the engine, the more it will cost to repair. Currently if I can get all the parts (not guaranteed), it will be between £500-1000 to get serviceable again. With that in mind, I would sooner convert to electric.
It's a two-stroke, so the bottom end is sealed and independent of the combustion chamber.
The bottom end gearing and clutch should be salvageable.
The plan:
Plan A: Use the bottom end, remove the crank.
If I can get the gears/clutch working properly again: have a working clutch and gear system.
Fabricate a crank with gear to run a motor with reduction, power through the original gears.
Plan B: Sod that, stick something like the QS motor assembly in and be done with it.
Plan B sounds more appealing because it will be a case of fabricating mounts to fit the motor, and not messing about with the old unit at all. Plan A would give me a clutch, and allow me to get that motor spinning fast, but I also fear that the dumping of the clutch and that sudden tension could damage the motor.
The bike has an old steel frame, and I have no qualms with modifying it or welding mounts on to make things fit.
My needs:
I have a working petrol trials bike, so this is supplementary.
1. I want something near-silent to practice skills especially where it might be frowned upon (front garden, trees nearby etc).
2. A clutch would be great, but I don't think this is possible with QS?
3. I don't want speed at all, I want to have a front tyre that lifts and a bike that wants to loop on me.
Essentially, I need a trials bike, but with an electric motor, than doesn't cost what EMotion are charging. I sat on a friend's Sur Ron, but unless it was set up badly, when I cracked the throttle nothing really happened. It went "hnnnnnn...." and then zoom, the opposite of a trials setup.
I could live without a clutch, but only if the moment I snap that throttle, it jumps to life. Maybe a lot of this can come down to front and rear sprockets, but I don't want the motor spinning insanely high RPM when I do transition from one place to the next at above-walking-pace. Using the original bottom end just seems like a novel approach.
Battery duration is longer the better.
I am struggling to cost this.
Could anyone help with rough costs of QS motors or similar?
Based in the UK.
A drop-in solution would be great, but I fear that it might not be the ideal way forward.
I have started reading a bunch of previous threads here.
Some of them seem to end without a working bike. Some of them seem to be ongoing projects. I don't want to spend two years and still have parts all over the shed.
Background:
I bought an old 90's trials bike, and it has one problem after another. Initially it was to be the project bike, do a top end rebuild and have something for friends to join me. However, it's a total dog. The further I dig into the engine, the more it will cost to repair. Currently if I can get all the parts (not guaranteed), it will be between £500-1000 to get serviceable again. With that in mind, I would sooner convert to electric.
It's a two-stroke, so the bottom end is sealed and independent of the combustion chamber.
The bottom end gearing and clutch should be salvageable.
The plan:
Plan A: Use the bottom end, remove the crank.
If I can get the gears/clutch working properly again: have a working clutch and gear system.
Fabricate a crank with gear to run a motor with reduction, power through the original gears.
Plan B: Sod that, stick something like the QS motor assembly in and be done with it.
Plan B sounds more appealing because it will be a case of fabricating mounts to fit the motor, and not messing about with the old unit at all. Plan A would give me a clutch, and allow me to get that motor spinning fast, but I also fear that the dumping of the clutch and that sudden tension could damage the motor.
The bike has an old steel frame, and I have no qualms with modifying it or welding mounts on to make things fit.
My needs:
I have a working petrol trials bike, so this is supplementary.
1. I want something near-silent to practice skills especially where it might be frowned upon (front garden, trees nearby etc).
2. A clutch would be great, but I don't think this is possible with QS?
3. I don't want speed at all, I want to have a front tyre that lifts and a bike that wants to loop on me.
Essentially, I need a trials bike, but with an electric motor, than doesn't cost what EMotion are charging. I sat on a friend's Sur Ron, but unless it was set up badly, when I cracked the throttle nothing really happened. It went "hnnnnnn...." and then zoom, the opposite of a trials setup.
I could live without a clutch, but only if the moment I snap that throttle, it jumps to life. Maybe a lot of this can come down to front and rear sprockets, but I don't want the motor spinning insanely high RPM when I do transition from one place to the next at above-walking-pace. Using the original bottom end just seems like a novel approach.
Battery duration is longer the better.
I am struggling to cost this.
Could anyone help with rough costs of QS motors or similar?
Based in the UK.
A drop-in solution would be great, but I fear that it might not be the ideal way forward.
