This configuration is unique to four-stroke engines Because the crankshaft isn’t used inside the intake tract. On the other hand, if it is a tiny price to pay in exchange for firing when every single other revolution is still left to non-public discretion. 100CC BICYCLE ENGINE Package: The four stroke https://caidenawobp.thenerdsblog.com/40858295/the-smart-trick-of-engine-bike-super-3d-that-no-one-is-discussing