CanadianCarGuy
ArboristSite Member
Just curious to finding out WHY is everyone stuck on machining everso thin based cylinder to bump up compression? I see some of the smarter guys are machining the combustion chambers, but why not just fill in and reshape the combustion chamber? Seems like everyone is trying to reinvent the wheel when you are already rolling. Guys machining the heck out of something and then tryin to figure out how to get port timing back to stock numbers. These cheaper disposable saws only take 190ish psi compression for a few months of steady use anyways (that is only from personal experience and for approx. 30ish other fallers). I know I have tried it all, yeah you can make power through the roof, but the silly cylinders fall apart after a month or two on a work saw. That last 390 muffler I had brazed (Thought my welder was too hot and making them crack premature) only last 25 work days exactly and completely fell apart. I think it is a common misconception out there that a good work saw can only be made with complex and tedious machining, but I feel that to not be completely right. Sure there are guys out there who can make a boatload of torque off idle and you can push on the saw hard as you want and the chain still spins, but isn't chain speed and rpm in a cut just as important? I am curious all if those guys who run a ported saw day in and day out what do you look for in a saw and how long are you getting out of your port saws, what sprockets and what chains do you run? If you are gonna say a 7 tooth is all you need, you never ran a real saw before, cause that thing will be pinging on the limiter every cut if it is over 80ccs at least that is my experience, unless your are running those silly spikes that take out the clutch side bottom end bearing every few months. Before I get stomped on by some super talented guy that should be a head engineer at NASA, just think about the point I am getting at. 30 years ago welding a big glob on an 076AV piston was the norm for bumping up compression to make more power. Now we have saws that set their own ignition timing. I am sure we put our heads together and come up with something that can compete with fancy machine work without the expense and hassle. I mean how hard can it be to bump up compression without altering port timing or affecting the saw's rpm for max torque? Also what is the point of unlimited coils if you are not pinging off your limiter, I always wondered that?