Another chainsaw dyno...

[Red97]

You cut one axis of the graph off

The graph is just how I wanted....

Shows what needs to be shown. The difference

 

[huskihl]

Top 3 are the 572, bottom 3 are the 7310 and the tq is the 6 lines towards the bottom.

Gotcha

 

[Deets066]

The graph is just how I wanted....

Shows what needs to be shown. The difference

Not satisfied with the dyno yet?

 

[Red97]

Not satisfied with the dyno yet?

It is very repeatable. Just not sure if I can call it accurate yet. It is only using 10% range on the load cell. I am going to shorten the arm to 6% and use more range. Should give even higher resolution.

But both saws same day multiple runs. I am very confident in that comparison.

 

[Piston Skirt]

View attachment 264099

3 runs of each saw.

About .6hp different max to max.

Both new?

 

[Time's Standing Stihl]

It is very repeatable. Just not sure if I can call it accurate yet. It is only using 10% range on the load cell. I am going to shorten the arm to 6% and use more range. Should give even higher resolution.

But both saws same day multiple runs. I am very confident in that comparison.

Looking good man. Glad you are able to dial it in

 

[Red97]

Both new?

First fire out of the box on both.

 

[Piston Skirt]

First fire out of the box on both.

Cool!
7310 shouldn’t reach 13k. Box stock should be 12700-rich.

 

[Red97]

Cool!
7310 shouldn’t reach 13k. Box stock should be 12700-rich.

According to?

 

[Piston Skirt]

According to?

Factory data.

 

[Deets066]

Factory data.

I don’t put much faith in factory data or specs.
If that was the case we wouldn’t mod saws.

 

[Red97]

Factory data.

Ahh, yeh I never looked at factory specs. I just added fuel and went to town. Was all of 13.5k out of the box.

 

[Piston Skirt]

I don’t put much faith in factory data or specs.
If that was the case we wouldn’t mod saws.

That's exactly why I asked if it was box stock And if factory standard (emission compliant) setting is 12700 (12600-12800 to be precise), it's obvious with 13500 it is on a lean side.

 

[Red97]

That's exactly why I asked if it was box stock And if factory standard (emission compliant) setting is 12700 (12600-12800 to be precise), it's obvious with 13500 it is on a lean side.

Yep, just out of the box. Sure sounded plenty rich still. I'll have to read the Manual sometime lol

 

[cuinrearview]

That's exactly why I asked if it was box stock And if factory standard (emission compliant) setting is 12700 (12600-12800 to be precise), it's obvious with 13500 it is on a lean side.

Obvious? Are you at Joe's?

 

[Piston Skirt]

Yep, just out of the box. Sure sounded plenty rich still. I'll have to read the Manual sometime lol

Not sure if they put L/H, richdown & max rpm settings there anymore I think it was gone (at least from European manuals) decades ago, when anti-tackle caps became mandatory...

 

[Piston Skirt]

Obvious? Are you at Joe's?

Thanks for cracking me up Being European in 29 years of it's existence I never came across that song until today

 

[cuinrearview]

Thanks for cracking me up Being European in 29 years of it's existence I never came across that song until today

 

[Red97]

1600 amps of buzz....

And a couple of wire feeders getting pulled out of the pig barn. Gotta knock the dust off and see if they work.

 

[Deets066]

View attachment 264153

View attachment 264155

1600 amps of buzz....

And a couple of wire feeders getting pulled out of the pig barn. Gotta knock the dust off and see if they work.