vibration

The first time started my Huasheng 142f 49cc 4 stroke motorized bike, it ran perfectly just like I wanted to, the idle was super smooth and very quiet. But when I actually used it vibrated A LOT. I did some research online about it but I found nothing helpful that could answer my problem. Now...

Hey everyone, this is my first post so please bear with me here. Alright so let me start by listing what I'm working with: (I underlined the most important stuff) Elevation: Sea level Terrain: All flat other than trails which rarely have hills of more that 6 feet gain in elevation at 40 degree...

Hi everyone, I know rubber is a big no no when mounting engines, but this being my first build I don't want to destroy my bike or engine and have read how metal to metal can cause headbolts to loosen just not as fast as rubber. With that said I believe in today's day and age there has to be...

help me forum!! very new here and to china girl engines. ive put about 120 mi. on my 66cc 2 stroke. everything is stock except i put the NT II speed carb and a low profile air filter on it. recently i am getting a very awful almost metallic vibration coming from the top end. its terrible and...

Hello quick question from a noob. I have a cruiser bike with a 4 stroke motor. I just replaced the front fork with mountain bike fork with shocks. I tightened everything down and readjusted the brakes. when i rode it was really smooth but when i would brake there was a lot of "woobly" vibration...

Ok so on my 80cc bike I was riding and there was a lot of vibration and my intake pipe fell out because of the two screws that hold the pipe into the cylinder! This isn't the first time I have had problems with these little screws. They are always never screwing in completely and securely no...