25” bars seem to be the norm here on 90cc saws. You can cut most trees you’d come across, it balances nicely and it’s still got great power in the cut.I know a fellow who 3D prints custom file handles.
I have some big saws and long bars I got for dry euc, but at some point the bar is too long and requires too much leverage to lever through the wood. One cant make the chain aggressive enough to self feed that many teeth without it stalling... I think thats why Aussies run short bars. I also heard to reduce heat buildup...and it dulls chains fast, who wants to sharpen 42" of cutters?
That being said, I don't like humping a big saw up and over big logs so I tend to run 30"-36" - .404 chain.
The owner of this mill I’m cutting at has a 500i after his 660 got stolen. He misses the torque / grunt they have, he keeps coming to pick mine up and doesn’t want to put it down in a hurry LOL. I’m going to ask to have a go on it and see how it compares. It will probably be underwhelming in this wood, but we’ll see! It may convert me…