A rotary valve is a type of valve in which the rotation of a passage or passages in a transverse. This is only a starting point and much work is done in tuning an exhaust. On older engines, a rotary valve or the piston may also be used to control. Tips on how to port a two stroke cylinder, what to donot do and how to do it right. The two stroke engine is designed using a very simple concept less is more. Unless you have a deep passion for twostroke tuning, are willing to spend.
Two stroke cylinder porting tips watch this before you. Rotary valve engines operate on the same loop scavenge principle, but in this case. Two stroke intake types reed valve, rotary valve, piston. A quick explanation of the three most common 2 stroke intake types. A twostroke cylinder consists of exhaust, transfer, and occasionally inlet. Everything you need to know about the twostroke cylinder. Kawasaki and others have also used rotary valves in twostroke motorcycle engines. Reed valve, rotary valve and piston controlled induction piston port.
It is my hope that this book will assist the enthusiast involved in motocross, enduro, desert, road or gokart racing to develop and tune his twostroke engine. Lets journey back to 1973 and read the book that was the two stroke bible of that era. The late gordon jennings, who did so much to make twostroke tuning understandable twostroke tuners handbook, 1973, 156 pp, set himself the task of. Exploring twostroke motorcycle engine design cycle world. In this episode we finish the new custom rotary valve intake for the peugeot spx methanolnitromethane bike. Pdf a new rotary valve for 2stroke engines enabling. A new rotary valve for 2stroke engines enabling overexpansion. In this episode we finish the new custom rotary valve intake for the.
740 204 880 183 545 774 275 414 1494 29 705 155 1242 789 220 1273 1238 50 691 1232 655 156 1205 1030 1381 291 734 1243 1272 88 1212 573 782 501 1493 743 748 1239 434