I have recently came across a Yamaha three wheeler, from the pictures on here, it looks on like a tri moto with the banana colored, vented, front fender. This thing has the most amazing gear ratio I have ever seen. A huge rear sprocket with a small front drive with the chain maybe a foot long. It has the gas tank mounted inside the frame. Only I can't tell what cc it is. The serial numbers are still somewhat readable but google didn't produce any results. It is a two stroke. With a separate oil tank on it's side. Does anyone know how to tell the size of the trike, maybe where engine numbers would be located if it has em.