Another chainsaw dyno...

[huskyboy]

"Worksaw" north of 200 psi ? No franks.

I concur

 

[5000+]

I'd like to see the difference between a normal piston and a dished one. Is the loss in compression made up for by a higher volume of fuel/air mix? Lower compression saws are supposed to rev higher right? So, maybe by using an extra thick aftermarket piston, stock compression could be maintained, but with a much larger volume of mix. And an exhaust port could be lowered, and squish set without having super high compression.

Already done from the factory. Husqvarna 261 dished 262 flat, same cylinder.

 

[Moparmyway]

"Worksaw" north of 200 psi ? No franks.

Whew !!!!
Good thing its at 199 psi !

Did you make a bevel in the chamber to remove material? Hard for my poopie eyes to see.

Yes Sir !

 

[mgr1]

Thats why they invented watercooled 2 strokes. 205psi is 14bar.

 

[sawmikaze]

I concur

You know how it goes...

 

[huskyboy]

You know how it goes...

I don’t go home any sooner using a saw with 200+psi of compression vs a saw with 170psi compression. But what do I know? I’m not racing my saws for a living. Lol

 

[sawmikaze]

Depends on the saw, but I have multiple Worksaws over 200 psi. As for rpm, I guess one would say safe RPM-not leaned out.

The smaller bore saws have more relative cooling area/bore ratio than the large bores.

Autotune helps one out too, it can overcome the leaning out from too much compression issue by compensating real time.

That’s part of why AT saws will usually beat a manual tune saw, you get the best of both worlds in some way-and it’s safe too. I’ve had to drill the nozzle in some AT saws so that they could compensate and the results were rewarding. For clarification, the jets in Stihl MT saws are in the nozzle side(s).

We have different definitions of worksaws.

 

[sawmikaze]

I don’t go home any sooner using a saw with 200+psi of compression vs a saw with 170psi compression. But what do I know? I’m not racing my saws for a living. Lol

Looks cooler on YouTube.

 

[Woodpecker]

Starting a 200+ psi "worksaw" in a bucket or hanging from a tree isn't going to work so well. Philosophy of use is important and stuffs...

 

[sawmikaze]

Starting a 200+ psi "worksaw" in a bucket or hanging from a tree isn't going to work so well. Philosophy of use is important and stuffs...

You know how it goes too. Between my 461 porkchop ported and 880 I probably started a chainsaw over 40 times today. It's not a strength thing..I can drop start our 880 with my pointer and middle finger late in the day.

 

[huskyboy]

Looks cooler on YouTube.

I just watched a video where a u tube superstar put a bark box on a 500i. Said it completely transformed the saw... I guess its the new cool thing to do now. Lol

 

[sawmikaze]

I just watched a video where a u tube superstar put a bark box on a 500i. Said it completely transformed the saw... I guess its the new cool thing to do now. Lol

The flower garden is growing.

 

[huskyboy]

I wonder if the 6-10 percent gain from one means you can leave work 6-10 percent earlier? Maybe @ayoungtexan can get a job with you Ryan and find out. Let us know if he leaves work earlier. He’s in a hurry because he says he’s too busy to have a job. Lol

 

[sawmikaze]

I wonder if the 6-10 percent gain from one means you can leave work 6-10 percent earlier? Maybe @ayoungtexan can get a job with you Ryan and find out. Let us know if he leaves work earlier. He’s in a hurry because he says he’s too busy to have a job. Lol

32:1 with HP2 sends you home 11% sooner.

I'll test how thick his skin is for sure..

 

[ayoungtexan]

32:1 with HP2 sends you home 11% sooner.

I'll test how thick his skin is for sure..

Did ya get that redmax blower yet?

 

[sawmikaze]

Did ya get that redmax blower yet?

No. I won't buy one til fall.

 

[Deets066]

Did ya get that redhead blower yet?

 

[drf256]

We have different definitions of worksaws.

I’d agree with you there. I’m not using one 8 hours +a day.

My point was more that one can’t have an absolute value to say yes/no. A 50cc saw with 250psi starts as easily as an 80cc saw at 175.

My shoulder’s done worn out, haven’t slept in 3 nights after starting and swinging a ported 395 with a 36” regular weight 404 cannon around for 6 hours on Saturday. Thank god for decomps too. I’m all about easy starts and lighter saws as the years go by. Really don’t give two shíts if I have to turn in my man card for this statement.

 

[Duce]

Would like to see videos of compression checking those 250+psi. Especially 80cc and above.

 

[Moparmyway]

Would like to see videos of compression checking those 250+psi. Especially 80cc and above.

I'm going to one up ya here and ask for videos of any saw over 100cc and over 200 psi

Here is a 120+ cc saw ................