Weed Eater Motor Bike(Friction Drive)

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Introduction: Weed Eater Motor Bike(Friction Drive)

About: Hey guys, I'm just a guy that lives on an island hardly anyone knows about, right next to Seattle. My interests are the same as any 16 year old, computers, cars, biking, and just messing with stuff in general.

This is my Weed Eater motor powered bike. It is friction drive, as you can see, and is mounted using steel. We were thinking about aluminum, but it might be to light and not strong enough. the drive shaft is on of the stunt bike pipes. The hardest part was the mounting technique, mainly because the motor hardly have any good mounting spots. Credit to my dad for helping with the mounts, and without using a welding torch! Enjoy!

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    23 Comments

    Your invention is awesome, I did the same thing. However your motor is a TORO not a Weed Eater.

    This is very awesome If u could put instructions of how u mounted it and how the throttle was attached and kill switch

    yes, could you make an instructable? i would love to find out how this was attached without welding. since i cant weld.

    How do you put the peg on the clutch shaft? Can you u just thread it with a tap and die? Would it work if you just mounted the clutch shaft against the wheel without the peg on it?

    I thought that you were supposed to give instructions on how to make it

    What size engine is it? And how does the power do with all the weight on it? Like climbing hills?

    For me, that toro would be a very big engine to run on a bmx bike like the one you have... I don't know about how it is to actually ride but for a probably 25-30cc motor I think the size and weight would slow it down.. Just my opinion...

    2 replies

    Yes, but after I modified the attachment system from being forced down to only gravity, it worked a lot better.

    Yeah.. Okay I see why you mean...

    hey I used a 11/16 inch socket as my drive shaft and it doesn't grip the tire well enough because its smooth. Do you think if i get a bike peg that has grooves like yours do you think it will grip better? thanks

    3 replies

    Yes, it will work alot better, but also, make sure the motor is loose and can move up and down on the wheel, so its not tight.

    does the tire tread matter? because on my bike the tread is completely flat.

    No, but I highly recommend have some tread. Go to a bike shop and get treaded tires

    does the motor always spin in the same direction?? i have a leaf blower gas motor but i dont know which side to put it on

    2 replies

    you want it to go opposite of the way the wheel spins, in the case, your looking at it spinning clockwise

    thank you once i get a welder im going to finish this project

    Yeah, i realized that later

    what i should have do this ?????????

    I am building one of these, but i ran into a problem. how do you keep the bike peg from unthreading itself when its on the bike?