Another chainsaw dyno...

[Bigmac]

Same bar same chain, same log.

These are the 2 saws in the graph.

So the bottom feed holds more rpm and is faster, and has the most power! It wins everywhere.

 

[spencerpaving]

How ya been there Buddy.

Hanging in there....

 

[Mycamaro_68]

huge thank you to @srcarr52 for the excel help
Teaser #1

Ignore the dip, didn't have any data, pretty safe bet to connect the dots. Same thing on the high end of the yellow, if I had the data out to 14k it would not drop as quick

Who wins?

View attachment 240458

Don't complain about the graphs, this was my 3rd pull.

Is that little bit on the top end enough to win? or do 3 swipes off the rakers take the lead?

Since these builds are already documented...

80
99
119/120


80
97
115/119

Ill let you decide who is who


These are the types of things possible with the dyno runs. Seeing these things on the graph is something I know I passed off as the wood/chin variables.

I think it would be really interesting if the filtration system was swapped on those two saws and then run them on the dyno again to see if that changed anything.

I am not trying to add more work for you and definitely don't feel like you have to do that for me, i just find this very interesting.

 

[Red97]

I think it would be really interesting if the filtration system was swapped on those two saws and then run them on the dyno again to see if that changed anything.

I am not trying to add more work for you and definitely don't feel like you have to do that for me, i just find this very interesting.

Filter was good for approx .4hp at max hp.

Would be close but the bottom fed still makes more power.

Both had the same filters in the cutting video.

 

[Red97]

I got the brats and the dyno. Who is bringing the beer?

 

[Wilhelm]

How about moonshine, might also help keep the C-virus at bay?!

 

[cuinrearview]

How about moonshine, might also help keep the C-virus at bay?!

His neighbor has that covered.

 

[Armbru84]

How about moonshine, might also help keep the C-virus at bay?!

I am sure I could arrange that...

 

[Red97]

So I have been thinking of some type of build off sounds kind of fun...

 

[Wolverine]

Joe, have you simply just played with the tune, like a bike or car shop would do while the vehicle or engine was on the dyno? Do you just tune by ear to 4 stroking then let er rip? Wondering what a fat tune does to the curve vs an optimal tune by ear. My gersh, what an awesome toy to play with.

 

[Red97]

Joe, have you simply just played with the tune, like a bike or car shop would do while the vehicle or engine was on the dyno? Do you just tune by ear to 4 stroking then let er rip? Wondering what a fat tune does to the curve vs an optimal tune by ear. My gersh, what an awesome toy to play with.

Tune makes a difference. I just set them by ear, and make sure to match it next time I make a run.

I'm sure some saws will liken it a bit leaner, and others a bit fatter.

This dyno is a very fun tool. Day can get away from you in a hurry

 

[Czed]

I got the brats and the dyno. Who is bringing the beer?
View attachment 240516

How's the diet Joe?

 

[Czed]

If not to much hassle a before and after muff mod
Run would be interesting.

 

[Red97]

How's the diet Joe?

I'm fatter again...

 

[Czed]

I'm fatter again...

Same here.

 

[huskihl]

Me3

 

[jacob j.]

I'm fatter again...

Same here.

Me3

Me also. Too much time building saws, not enough time running them.

 

[srcarr52]

Me also. Too much time building saws, not enough time running them.

I’ve actually lost weight working from home. Less fast food and over eating. I’m not getting any more done in the garage though!

 

[Redfin]

Is this the new fat thread? Very nice work Joe.

 

[Red97]

Is this the new fat thread? Very nice work Joe.

Thank you

It might be...

With some luck the software and printer will be here by the weekend.

The 404 sprocket too...