Bogdan Oproiu

PW50 rear monoshock

The PW50 is  the best choice for getting your child into Motocross racing. The AMA has a special racing class called 50cc class-1. This racing class is for kids to start racing with other kids that are all close in age and on similar bikes. Most of today's top Pro motocross & supercross champions like Ricky Carmichael and James Stewart started riding and racing on PW50s.
Specs: Length 1245 mm Width 575 mm Height 715 mm Seat Height 485 mm Wheelbase 855 mm Ground Clearance 105 mm Wet Weight 39 kg with 2 litres of fuel

The peewee looks more clean this way
There is a real interest in changing the suspension of the Yamaha pw50 motorcycle because it has remained unchanged since its conception in 1981
Because I had pneumatic shock absorbers from a bicycle, I thought to adapt them to pw. After seeing what others have done, I came up with my own approach.
For the bottom we made a support that is caught between the cardan and one of the escape grippers. and at the top I welded a frame ear. The shock absorber is 190mm Rock Shox Monarch air and has 200 grams, while the original ones have 1kg.
The advantage is that I can adjust the sag for my baby, and as the rises can lift the motorcycle.
I've stuck a thermal foil on the shock absorber because it's very close to the exhaust, which I intend to change with one that has the same shape of a bigger motorcycle.
Besides giving up old dampers, I dropped out of the tank and the oil pump.

monoshock pw50

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