Saw video thread

[Redfin]

I like it John.

Go with the full plug. I don't like adding that dead space to the chamber myself-could be wrong. Looks like a spot for poor combustion or preignition to me, again, could be wrong.

How open is your muffler? I'd expect you to be fully 4 stroking into the 16's with that sucker.

They like a lot of exhaust.

I didnt like the thought of having the plug shorter than the chamber but at least its easy to change and test.

The muffler is roughly 125% of port opening. Im a tad surpised how low it dropped.

 

[Time's Standing Stihl]

This ones at 240 psi, was definitely leaning out after a few cuts on this reading. Still lightly (very) 4 stroking.

View attachment 36559

Dang doc, that baby is blowing some psi!

 

[Brewz]

Dang doc, that baby is blowing some psi!

I dont see PSI as much of an issue in a smaller CC saw.
Mine is 230 and I have the decomp plugged. It is not difficult to turn over or start.
I would not build a 90cc+ work saw over 200 psi
I built a 111cc Stihl 076 that had 180 and it near tore my fingers off a couple times. Damn thing was the first saw I was ever scared of pulling the cord on and I drop start my 090 left handed.

 

[Time's Standing Stihl]

I agree it's not an issue in smaller saw Tony. But is it really needed? ? Small or big, some of the best saws I've ran are in the 175 to 185 range

 

[jmssaws]

The 180lb 026 will run right with the 230lb 026 I think.

 

[GoBigBlue1984]

I build all of my saws for me and for my loggers in the 175-185 range. Just feels like the sweet spot. But I mostly build 90cc saws, so it's a little different than say a 50-60cc saw


Sent from my iPhone using Tapatalk

 

[jmssaws]

I agree that 185 or so is perfect and I haven't found any cc saw that don't like it.
The 180lb 026 would run very close to a 200+lb 346,it wouldn't beat it but it's very close.

 

[jmssaws]

 

[jmssaws]

The 346 is maxed but the 026 will go faster.

 

[RI Chevy]

Nice job Jason. What bar and chain were you running?

 

[jmssaws]

20" square 325 8pin

 

[RI Chevy]

Wow. They both sound awesome.

 

[Brewz]

Probably getting off topic, but to get my exhaust timing down into the hundreds, I had to drop the jug a fair bit which resulted in the high compression.
I want to keep the squish tight but would like to drop it back to sub 200 psi.

I have been thinking of leaving the domed squish and flat topping the piston under the combustion chamber to see how it goes

 

[jmssaws]

I lowered 030 and the exhaust was 104 then raised to 102,020 from the chamber and compression was 180-190

 

[Brewz]

From memory mine had a really high exhaust and I had to take 40+ off the base and 30+ off the band to get the exhaust down around 102-103*

Do you think putting a thicker gasket in to take squish up to mid 20's would hurt it?

 

[Brush Ape]

Let's get this show on the road....

 

[A.E.E.llc]

The 180lb 026 would run very close to a 200+lb 346,it wouldn't beat it but it's very close.

How close is close?

 

[jmssaws]

How close is close?

Video on the last page

 

[94BULLITT]

A couple weeks ago I went to the Capon Bridge Founders Day. They had a lumberjack competition. It was really cool to watch. They had a stock saw race with echos CS590s, hotsaws, axe throwing, jack and jill buck saw, and 2 man bucksaw, underhand chop, and standing block chop. They did something were they had one end of the log proped up about 6' with a 8x8 cant on the end of it. They started in front of the log and round to the back of it, up it and cut a cookie off then ran back down and to the front. There was 4 or 5 guys there that compete or had been in the Stihl Timbersports. I got some videos of the bikesaws.

 

[Redfin]

This is with the full decomp plug at 190lbs. If I get time before I give it back to my buddy at the gtg I may give it more intake.