This Post is about the functions of your Chainsaw as far as pistons/performance is concerned. Your Chainsaw runs@ 12,000 rpms I have some that turn up@ 14,000 rpms. At that rate the piston will travel up and down 200 times per second. After only 50 hours of operation running @ 12,000 rpms it has done more than 36,000,000 revolutions of the engine. This a funny part when you think about it, the piston has to stop completely @400 time a second to change direction. The piston rings seal your cylinder as they go up and down and they flex @400 times per second, so as you can see, they must be of good quality to perform this function. We also will have add to this the fuel mixture. Sometimes people say adding more Oil helps but this is not true. If too much oil is present in your gas/oil mixture it can and will stick the rings in your cylinder causing loss of compression and the saws performance. Like wise it is to Little it can lead to more of the same problems your piston off course will lock up. If the piston skirt turns brown, Gas is old and stale, in turn it will cause cylinder deposits to form on the top of the piston and piston skit. You always want to use new cylinder gaskets when you are replacing a piston/cylinder. And if it is applicable the intake adapter gasket.Sorry but my finger is tired. I did leave out one more detail and that ignition timing if to far advanced not using a degree wheel it will burn your saw up or running it to lean will also lead to piston failure. Chainsaw engine builders like to tinker with your saws timing just make sure they are using a degree wheel, because this is the only way to advance your saws timing,especially if you have a non- e.p.a. saw. Have a nice day... Stumper
Thank you “Rope” for reading my Post.. You seen like a nice guy! We need more people in the world like you! Have a nice day! Stumper
What is piston rings flexing? Do you have any more info? I've heard of flutter, and newish industry writeups on ring tech that lean towards a constant pressure between rings helps keep them sealed.
Yes, “Boomstick I have more. But I will talk about this in a different Post..It gets deep the more you write on this subject. A lot of engine builders may not like some of my information, but I will try to do it in a gentleman’s way. That’s for reading my Post! Have a nice day... Stumper
I just never heard of it before, maybe something two stroke specific like not letting the rings rotate as they could snag.
