Hi-I just joined and being unemployed I am looking for projects to keep my mind busy without spending money. I had to quit building a Lotus 7 from scratch and turn to something free so here I am. I have a 70 cc Chinese 2-stroke in an old Schwinn cruiser with a retrofit front springer on which I mounted a caliper brake. It is a Gru Bee, or China Girl, or Happy Time. I think building a chamber would be a fun project. I did a bunch back in the 70's as well as half-mile and scrambles steel shoes. I need the dimensions for one if anybody has them, as well as head pipe and stinger length/diam. Also, I could use port window mods, etc for that particular engine. If I knew a for-sure name for it I would search your archives in case someone has already posted what I need. Please be patient with me on that score. Directions rather than flack is what I would prefer.