How to Make a Really Cool Gas Powered Motor Bike





Introduction: How to Make a Really Cool Gas Powered Motor Bike

make a cool bike that make a great speed of 20 to 30 mph ( depends on CC of
engine too )


fishing line
a box of straws
a small box
a Bike with hand brakes
a bike rack that connects to the seat   
a couple different sized chains
and a 49cc to 100cc engine

if you get a chain saw engine it will have lots more torque and power,
if the engine has a clutch it works better   

Step 1: The Engine

I mount the engine ( green ) on the rack of the bike
with the gas ( red ) tank strapped on to the box ( yellow ) strapped to the rack ( orange )

Step 2: The Throttle

The throttle on the engine should be near the carburetor and it's a little lever that I tie fishing line to

I tape straws ( blue ) on the side of the bike running fishing line through them,
the hand brake for the front tire disconnect it from the brake the tie the remaining end of fishing line to the brake handle

Step 3: The Chains

Take a couple chains until you find one that fits tightly and snugly 

In the picture it is running from the engine to the back gear 

Step 4: Starting Up

Pull the handle with the cable to start the engine then test your throttle by puling on it like a brake

then test ride



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    It would be very helpful if you could add pictures or videos of your build so that we can see how yours turned out and build ours to match that.

    hi i bought a 66cc engine from dragonbikes its an australian company the engine looks sweet runns ok when it starts ive replaced the plug the filters but or some odd reason i ride about 5ks then bang it bogges out n dies then wont restart (been late for work many times)i dont push it hard followed the manufactures suggestions n still wont run correctly and for long any help plzzzzzzzz thanks n my fuel mix is 40:1

    Unless you have a transmission, it sounds like you could have a bad gear ratio. I recommend trying to add a clutch and shift lever, but that might be hard...


    Domin8er, you are likely pulling vac in the fuel tank. Next time it bogs on you, quickly unscrew the fuel cap and it should start running again. If this is the problem, drill a very small hole through the center of the cap to let air in while you are riding.
    Hope this helps.

    You may have to steep of a gear ratio or the motor is blown. Take the spark plug out and put your thumb on the hole and pull the cord a few times. If you feel no pressure then you need a new motor.

    also, where do i get a chain sprocket that fit my chain and engine?

    how do i attach the motor to the bike rack? i have a chainsaw powerhead.

    I think you may be better off using actual bowden cables and connecting to an unused brake lever.

    Congratulations, this is a nice work! But I think a 100 cc engine would be too much for a bicycle, a little dangerous.

    Not at all, if it's mounted inside the frame portion rather then on the back, you can go with up to about 300cc. Look up motorized bikes on YouTube, then are tons on there, most are a 196cc 5-6.5 hp motor.