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By Dominic Tiberio
I was given a Zhejiang Yongkang 500W electric ATV that has had all of the wiring and controls stripped from it. I plan on installing a new speed controller, but I am having a hard time figuring out how to handle the braking. The 500W electric motor is connected to the rear axle by a chain/gear and it has mechanical disc brakes. I can't figure out how to handle braking without risking damage to the chain/gear and since it is stripped I don't have much to go on. I'm assuming that the brake was originally set to cut power to the motor when engaged, but it seems like it would still put a lot of stress on the chain/gear at any speed. I've never rebuilt an ATV or electric ATV, but I have a lot of mechanical and electronics experience. Any help or insight is appreciated!
By Ben Cramp
I am hoping one of you knowledgable people can answer this for me. I have a yfm200 moto 4 engine I want to put in an off road go kart. I would like to mount a sproket where the drive exits the case before the u joint so that I can get rid of drive shaft and make engine bay compact. To do this I would mount engine 90° to axle but would also need to tilt it forward 15° to account for the angle the drive exists rear of casing. Would that be ok? Would oil pump etc still work. Any advice greatly recieved.
By Ryan Foster
I am trying to find a used OEM cylinder for the above mentioned quad. I was told the current cylinder came from Amazon so I suspect its aftermarket china (made from recycled coat hangers and shopping carts.) Anyway, was looking at the parts list and they have 2 cylinders listed..
My engine case is stamped K403 230829 Trying to figure out what model I have. I see I have a K in there but....
I don't know what the differences are between the cylinders (the first one cost more). Anybody know how to decipher this?
I only have the engine, I don't have the frame to get the actual VIN.
Also, are there any marks on an OEM cylinder to differentiate it from aftermarket?
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