I recently had to fix up a 'motorised' bicycle for someone and i can tell you they are quite dangerous and illegal. This one was one of the kits you buy out of just bikes magazine and bolt it into the frame of a old style MTB. This particular one was 80cc 2stroke. Engine mounts are primative and minimal, lots of vibration. The rear sprocket attaches to the rear wheel spokes! yes the those thin spokes! It attaches via a rubber mounting block squashed between a steel plate so basically the power is transfered through the spokes to the hub. This particular one needed a complete rear wheel re-lace as it had basically collapsed but admittedly this was due to previous ower abuse (donuts/burnouts or whatever).
This one also had a very poor throttle and throttle cable set up. Wong amount of free play and easy got stuck on full throttle.
This thing really gets up and go for a little aircooled 80cc. Ther engine is too powerfull for the brakes that just rub on the edge of the rim, its quite scary when you try to brake.
But thing i just dont get is that A) im sure these 80cc engines are illegal and 35 or 50cc is the limit? B) guys loose their car license and then get one of these things but i can not understand how they can be allowed to ride one of these on the road with no license
You loose your license for drink driving but then can still get around on one of these, it just doesnt make sense. I believe you can ride up to a 50cc motorcycle/scooter (vespa type thing) with just a car license and you are required to wear a proper AS motorcycle helmet. I just dont get how you can get away with riding a bicycle with no bike or car license with an 80cc or 50cc petrol engine and just a bicycle helmet
. Im sure its not legal. Im not sure but i think the limit for petrol engines in bicycles is 35cc? i would think that if its 50cc then it would be like a normal 50cc scooter and you at least need a car liscense.
Ok if you wanna hoon around the backyard on on, but i dont think you should be allowed to hoon around the streets on one without a car license at least and a motorcycle helmet, expecially if its a 50cc or more.