Chuddybuckrivet
New Member
- Local time
- 8:23 AM
- Joined
- Apr 25, 2017
- Messages
- 4
Hey folks. New guy here. Great forum yall have here. I've learned quite a bit already. Ever since I was a kid I've wanted to build a motorized bike. So almost 40 years later I'm going to do it!
The thought came to mind when I recently dug an old Echo hedgetrimmer (not a weedwacker) out of my shed that someone gave me a long time ago. Well, I don't have any hedges, hence it sitting in my shed for the past 10 years. It's got a 21cc engine.
So my questions are, first off, is this little engine even worth using? Seems to have a ton of compression when I pull the pull cord. Almost feels like pulling a chainsaw cord. At least compared to my weedwacker and leaf blower. So I'm assuming it should have some torque? I'll only be using it use it to putt around my neighborhood maybe down some gravel roads thru the woods around here. If it will do 15-20mph I'd be plenty happy. It wont be a daily commuter or anything.
So assuming it's worth using, which side of the engine do I want to put my drive spindle on (I think I'm going to use a modified bmx peg or a deep well socket to start with?) I've seen various projects online where the drive spindle is mounted on the flywheel side and in other cases it's on the other side of the engine. What's the difference? I wont be doing much stopping and going, so if it doesnt have a clutch, I'm fine with that. Same goes for the pull cord, don't really need it, pedal start is fine with me. Not sure how I would even mount a shaft to the clutch anyway (I think that's a clutch in the below pic?)
I'm sure I'll have more questions along this build, but this is the first thing I need to determine so I can build the engine bracket to attach it to the bike. I'm a hobbyist welder/fabricator so I shouldn't have much trouble there.
Thanks for any insight you can offer. If I've posted this in the wrong place, I apologize and the mods can move it where it belongs.
The thought came to mind when I recently dug an old Echo hedgetrimmer (not a weedwacker) out of my shed that someone gave me a long time ago. Well, I don't have any hedges, hence it sitting in my shed for the past 10 years. It's got a 21cc engine.
So my questions are, first off, is this little engine even worth using? Seems to have a ton of compression when I pull the pull cord. Almost feels like pulling a chainsaw cord. At least compared to my weedwacker and leaf blower. So I'm assuming it should have some torque? I'll only be using it use it to putt around my neighborhood maybe down some gravel roads thru the woods around here. If it will do 15-20mph I'd be plenty happy. It wont be a daily commuter or anything.
So assuming it's worth using, which side of the engine do I want to put my drive spindle on (I think I'm going to use a modified bmx peg or a deep well socket to start with?) I've seen various projects online where the drive spindle is mounted on the flywheel side and in other cases it's on the other side of the engine. What's the difference? I wont be doing much stopping and going, so if it doesnt have a clutch, I'm fine with that. Same goes for the pull cord, don't really need it, pedal start is fine with me. Not sure how I would even mount a shaft to the clutch anyway (I think that's a clutch in the below pic?)
I'm sure I'll have more questions along this build, but this is the first thing I need to determine so I can build the engine bracket to attach it to the bike. I'm a hobbyist welder/fabricator so I shouldn't have much trouble there.
Thanks for any insight you can offer. If I've posted this in the wrong place, I apologize and the mods can move it where it belongs.