361 vs 041 (fit between 066M & 026 Pro)

[blsnelling]

What is the RPM max on an 041S?

14,500

 

[Stihl 041S]

LOL



Even with 11cc more displacment?

So sayth it in the gospel according to Lakeside chapter 5 verse 3

 

[Stihl 041S]

14,500

And max RPM on a 361?

 

[blsnelling]

And max RPM on a 361?

361 = 15,100
460 = 15,000
260 = 15,600
:greenchainsaw: That's where mine cut best and have a nice cocoa brown plug.

 

[Stihl 041S]

361 = 15,100
460 = 15,000
260 = 15,600
:greenchainsaw: That's where mine cut best and have a nice cocoa brown plug.

Do you know Sthils spec?

 

[blsnelling]

260 = 14,000?
361 = 14,000 (although I've also heard 13,500 and that's where mine ran best stock)
460 = 13,500
I have the spec on the 041 FB somewhere.

 

[Peacock]

I have the spec on the 041 FB somewhere.

Our's says 11k, but likes about 10.5k best. It's an AV, not that it matters.

 

[Stihl 041S]

Sounds around right.
Still the same HP?

 

[Lakeside53]

Yep.. according to stihl... More torque?

 

[Lakeside53]

14,500

041?

Boom! if it can ever get there.

 

[Peacock]

Even so, I'd have to believe it would have more hp. Remember hp is derived from torque. If the rpm is the same and torque is more, then hp must be also.

How do the 038 and 038M2 compare in hp? They are 61 and 72cc too right?

 

[Lakeside53]

Even so, I'd have to believe it would have more hp. Remember hp is derived from torque. If the rpm is the same and torque is more, then hp must be also.

Not if they move the max torque point down to a lower rpm!

 

[Peacock]

Not if they move the max torque point down to a lower rpm!

But at that rpm the hp is still higher. Even if peak hp is the same, the average hp is greater.

 

[Lakeside53]

But at that rpm the hp is still higher. Even if peak hp is the same, the average hp is greater.

Not necessarily..... move your torque point down - more torque at less rpm - it can be the same hp number. At the top end, for all we know the torque at 10,500 is the same for both saws, which would make the HP the same at that rpm. Peak Hp will be at a lower rpm, but not necessarily coincidental with peak torque. If we had torque and hp curves verses rpm for both saws, it would be easy to see what is going on.

 

[Stihl 041S]

Is this anything like an oil thread?

 

[bcorradi]

Not quite yet...but its working its way up the ranks or should I say down the ranks .

 

[Peacock]

Not necessarily..... move your torque point down - more torque at less rpm - it can be the same hp number. At the top end, for all we know the torque at 10,500 is the same for both saws, which would make the HP the same at that rpm. Peak Hp will be at a lower rpm, but not necessarily coincidental with peak torque. If we had torque and hp curves verses rpm for both saws, it would be easy to see what is going on.

I realize that peak hp may be the same, but not likely. You have to assume that even if the peak torque is at a lower rpm it still makes more at the higher rpm than the smaller engine did. I'd bet anything that the Super has more area under the curve.

If torque is greater at a measured rpm, then hp is also.

Example with made up numbers:

5,000rpm x 5lb.ft./5252=4.76hp

5,000rpm x 4lb.ft./5252=3.81hp

7,500rpm x 5lb.ft./5252=7.14hp

7,500rpm x 4lb.ft./5252=5.71hp

 

[Stihl 041S]

Not quite yet...but its working its way up the ranks or should I say down the ranks .

Or in the words of Archie Bunker
"right in the terlet"

 

[Peacock]

After re-reading Lake's post I realize we may be arguing over something we agree on.....or something like that.

It's lost in translation somewhere.

 

[Stihl 041S]

And what you agree on is.............