hello all
this is one of my first couple posts,
i built a kit bike for myself, but then my GF wanted one too
but my bike was much to big for her to get on/off and ride properly
so my base bike is a BMX wally-world bike
so using an old 32cc sit scooter like this:
i chopped the drivetrain off
upgraded from a 9'' wheel to an 11.5'' wheel from a pocketbike
raised the gear ratio for a higher top speed (because when mounted on a bike low speed can be achieved by pedals. a power take off isnt necessary)
i used the rear wheel from the scooter as the drive roller on the BMX bike wheel. the only way it would work is if the drive-train was facing backward. this works in my favor when using a friction drive. the weight of the engine balances on the wheel and is supported by a hinge at the seat tube
pull start /electric start with battery
super easy to maintain
very relyable! starts on the 3rd pull after choke every time (i had been riding the scooter a long while before i cut it up for this project)
any questions/comments are welcome thanks!
this is one of my first couple posts,
i built a kit bike for myself, but then my GF wanted one too
but my bike was much to big for her to get on/off and ride properly
so my base bike is a BMX wally-world bike
so using an old 32cc sit scooter like this:
![](/proxy.php?image=http%3A%2F%2Fwww.pacificproductsinternational.com%2Fgas-scooters%2Fxg470%2Fimages%2Fxg-470-blue-angle-200.jpg&hash=9292fcf084d30093443a2a993eea196e)
i chopped the drivetrain off
upgraded from a 9'' wheel to an 11.5'' wheel from a pocketbike
![](/proxy.php?image=http%3A%2F%2Fmotorbicycling.com%2Fmembers%2Fpocdragon-albums-bmx-build-picture1331-676a0236.jpg&hash=b6f093355874e5e93c316a48908e742c)
raised the gear ratio for a higher top speed (because when mounted on a bike low speed can be achieved by pedals. a power take off isnt necessary)
![](/proxy.php?image=http%3A%2F%2Fmotorbicycling.com%2Fmembers%2Fpocdragon-albums-bmx-build-picture1330-676a0235.jpg&hash=c6c9f452adf777d9cc1a9cee162e2a8c)
i used the rear wheel from the scooter as the drive roller on the BMX bike wheel. the only way it would work is if the drive-train was facing backward. this works in my favor when using a friction drive. the weight of the engine balances on the wheel and is supported by a hinge at the seat tube
pull start /electric start with battery
super easy to maintain
very relyable! starts on the 3rd pull after choke every time (i had been riding the scooter a long while before i cut it up for this project)
![](/proxy.php?image=http%3A%2F%2Fmotorbicycling.com%2Fmembers%2Fpocdragon-albums-bmx-build-picture1332-676a0242.jpg&hash=ff620d957bfc3bca90ffb6ed693b1d4e)
any questions/comments are welcome thanks!