What's on your bench?

[ranchdadmike]

Dang that's a nice saw!

You should know! Thanks @you for the 262 hookup. Quite possibly the cleanest saw I own...wait, no, the second cleanest..wonder where the cleanest is?

 

[RI Chevy]

Looks just like a new saw. [emoji106]

 

[Johnmn]

Stihl 036 waiting on a PTO side seal
And a husky 55 getting a full rebuild. I hope I can find a closed port 55 cylinder or a jonsered 490/590 cylinder

 

[dustinwilt68]

I respectfully disagree. Yes stock muffler is better at stock rpm but if you run a ported muffler at stock rpm it’ll be slower. Too fat.

Then you are not comparing apples to apples, scientific method states 1 control variable can only be tested one at a time. I saw turning 13,500 will run different then a saw at 12,500, if the goal to test the speed in the cut rpm must be the same.

 

[dustinwilt68]

If you start changing more then 1 variable how do you know which has caused the increase or decrease?

 

[huskyboy]

If you tune both saws to 13.5 and the ported one is too fat and looses power by being fat, then it makes the comparison pointless.

 

[T.Roller]

If you start changing more then 1 variable how do you know which has caused the increase or decrease?

That would be like setting a ported saw to stock saw rpm from the manufacturer. You are leaving alot on the table.

 

[T.Roller]

If you tune both saws to 13.5 and the ported one is too fat and looses power by being fat, then it makes the comparison pointless.

Beat me to it lol

 

[T.Roller]

If you start changing more then 1 variable how do you know which has caused the increase or decrease?

Be like building a motor for your car that's carbed and not jetting it accordingly

 

[huskyboy]

Stock one will loose power tuned to the higher rpm of the ported muffler as well. Too lean. Tune em where they like to be. It wouldn’t be apples to apples by not tuning both of them where they run best.

 

[huskyboy]

If I tuned a ported 372 to 13.5 I might as well buy a stock one.

 

[huskihl]

Then I'd tune each in the cut to see which was fastest

 

[dustinwilt68]

You have to look at what you wish to find from your testing, do you think how I tune a saw is the same as anyone else? Certainly not, we all pick up on different things. We are talking about a muffler making a difference with different size outlets, sound and pitch will change from just making the hole bigger, a tach is the only scientific way to measure for accuracy

 

[dustinwilt68]

I certainly agree that testing in the cut would be best to see which produces more power, if booth are tested by the same person, but that won't tell you that the muffler alone is the difference in what you find, if the carb is changed it now has a role in the findings

 

[huskihl]

I certainly agree that testing in the cut would be best to see which produces more power, if booth are tested by the same person, but that won't tell you that the muffler alone is the difference in what you find, if the carb is changed it now has a role in the findings

If the only thing you changed between cuts was the muffler opening, and tuned for fastest rpm in the cut, there are no other variables

 

[huskyboy]

If you drilled the jets on a stock saw it probably wouldn’t make it any faster. Just less turns out on the jets probably. It uses the same amount of fuel as before. Ported requires more fuel, if the carb can’t handle the changes then you have to mod it.

 

[dustinwilt68]

Just stating how scientific method works, how do you know that the difference is the muffler and not the carb if you change booth at the same time? A saw turning a higher rpm should cut faster then a slower one, don't think that is the argument here, how big is to big on the outlet is the question as I understood it. More fuel should equal more power to a certain point.

 

[T.Roller]

I certainly agree that testing in the cut would be best to see which produces more power, if booth are tested by the same person, but that won't tell you that the muffler alone is the difference in what you find, if the carb is changed it now has a role in the findings

Sure it would

 

[T.Roller]

Just stating how scientific method works, how do you know that the difference is the muffler and not the carb if you change booth at the same time? A saw turning a higher rpm should cut faster then a slower one, don't think that is the argument here, how big is to big on the outlet is the question as I understood it. More fuel should equal more power to a certain point.

Not true. My 395 cuts faster at 13.5 then at 14

 

[dustinwilt68]

That's why I said to certain point, if your muffler was changed, that may not be true though