bodged bikes
New Member
This Trail-A-Bike has been in my garage collecting dust since my daughter outgrew it years ago. I also had an extra Puch moped engine. Naturally, these two items had to be combined. Here is the result.
The original bottom bracket was cut out of the frame, and the engine mounted so that the front sprocket is located close to where the original pedal crank was.
The trailer wheel was built from a Puch moped hub laced into a 20” BMX bicycle rim and uses a 16” motorcycle tire. (Yes, 16” motorcycle tires do fit 20” bicycle rims)
Here are some details of the controls.
Note that all three wheels have brakes. The two bike wheels use mechanical disc brakes and are operated by the right side brake lever. The two disc brakes are linked at the cable splitter. The trailer wheel has a drum brake and is operated by the left side lever. This lever has been modified to include a brakelight switch.
The extra, backwards mounted lever on the left side is for the starter clutch.
The throttle was made from a mountain bike front shifter with the ratcheting mechanism removed. The modified shifter by itself does not pull enough cable to fully open the carburetor slide. To fix this, I fabricated this cable pull multiplier from a road-to-mountain bike brake adapter and some flat steel stock.
Here is a picture of an original Trail-A-Bike.
The original bottom bracket was cut out of the frame, and the engine mounted so that the front sprocket is located close to where the original pedal crank was.
The trailer wheel was built from a Puch moped hub laced into a 20” BMX bicycle rim and uses a 16” motorcycle tire. (Yes, 16” motorcycle tires do fit 20” bicycle rims)
Here are some details of the controls.
Note that all three wheels have brakes. The two bike wheels use mechanical disc brakes and are operated by the right side brake lever. The two disc brakes are linked at the cable splitter. The trailer wheel has a drum brake and is operated by the left side lever. This lever has been modified to include a brakelight switch.
The extra, backwards mounted lever on the left side is for the starter clutch.
The throttle was made from a mountain bike front shifter with the ratcheting mechanism removed. The modified shifter by itself does not pull enough cable to fully open the carburetor slide. To fix this, I fabricated this cable pull multiplier from a road-to-mountain bike brake adapter and some flat steel stock.
Here is a picture of an original Trail-A-Bike.
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