Originally posted by Top Gun 777
Hey very interesting point. Somewhere of the beginning of my present here in forum I mentioned about dynamic balance ( but someone call me irrogant idiot for it). This is what about. In many cases we just think about static balance ( when we work with engine on working table) try to weighing piston wrist pin and conrod. But when engine is working specialy at high RPM we have place dynamic balance, when wight are shifting from one position to other. In my opinion there can be real solution to get rid of unbalnce and made balance perfect. but there is ways to decrease it a lot.
Here in your post is mentioning some Russian engines with uncommon design of the shaft, it is absolutly tru. We can move some part of engine to one or other side which will help us to fight with this problem. On my new upcomming engine, I am using this trik- I have moved induction port to one of the side. We did it always in the past, no one Russian engine has induction port on the center. This design been use sometimes from mid 1980's
It is impossible to use the same way of improvement on existing common RC cars engines ( one of the point why I decided to make my own device). I am not saying existing engines are bad, I just think about this problem differently.
Thanks TG for your response.You mentioned that you move the induction port to one of the side.Then the transfer and exhaust port timing position do you change that too in relation to your induction port design/position.