PAST CT GTG 2016 May 7th

[drf256]

Thanks for that. Like a lesson in mathmatics back when I went to college. LOL

I didn't mean to come off like that. I only know from being a motorhead and being schooled myself on it.

HP is calculated. Torque is measured.

 

[RI Chevy]

No worries! LOL
This stuff is awesome!

 

[MustangMike]

Torque value is on the left, HP on the right, on some charts the #s on left & rt are the same, on other charts the torque # is 1/2 the Hp # (4 is across from 8).
Makes it confusing.

Eric, thanks for posting that 262. Getting beat by a 60 cc saw with almost 6.5 Hp is nothing I will be ashamed of! Those things are strong.

Jeff, my M-Tronic MMWS 362 was dynoed, hopefully it will be posted.

Dan I hear what you are saying, just trying to figure out how many data points make it relative, don't want to go out of the power band. I guess based on that, my 044 is kinda an animal for a non ported saw. If I take run #116, take the 7 best data points (continuous from 7550 to 12,250) and eliminate the high # (only one in the 8s) and average the rest (they are all in the 7s) I get 7.56 Hp. On chart 115, if I take the 7 best values (includes one in the 8s and one in the 6s) and average them, I get 7.356 Hp. Not bad for a 70 cc saw that is over 22 years old and has not been ported!

 

[jmssaws]

That's some 044 you have there,my stock one is a turd.

 

[jmssaws]

Torque value is on the left, HP on the right, on some charts the #s on left & rt are the same, on other charts the torque # is 1/2 the Hp # (4 is across from 8).
Makes it confusing.

Eric, thanks for posting that 262. Getting beat by a 60 cc saw with almost 6.5 Hp is nothing I will be ashamed of! Those things are strong.

Jeff, my M-Tronic MMWS 362 was dynoed, hopefully it will be posted.

Dan I hear what you are saying, just trying to figure out how many data points make it relative, don't want to go out of the power band. I guess base on that, my 044 is kinda an animal for a non ported saw. If I take run #116, take the 7 best data points (continuous from 7550 to 12,250) and eliminate the high # (only one in the 8s) and average the rest (they are all in the 7s) I get 7.56 Hp. On chart 115, if I take the 7 best values (includes one in the 8s and one in the 6s) and average them, I get 7.356 Hp. Not bad for a 70 cc saw that is over 22 years old and has not been ported!

A stock 660 is 7.2hp and most ported ones are 8 to 8.5, I'm shocked it's that high.
That's one hell of a stock saw.

 

[paragonbuilder]

Torque value is on the left, HP on the right, on some charts the #s on left & rt are the same, on other charts the torque # is 1/2 the Hp # (4 is across from 8).
Makes it confusing.

Eric, thanks for posting that 262. Getting beat by a 60 cc saw with almost 6.5 Hp is nothing I will be ashamed of! Those things are strong.

Jeff, my M-Tronic MMWS 362 was dynoed, hopefully it will be posted.

Dan I hear what you are saying, just trying to figure out how many data points make it relative, don't want to go out of the power band. I guess base on that, my 044 is kinda an animal for a non ported saw. If I take run #116, take the 7 best data points (continuous from 7550 to 12,250) and eliminate the high # (only one in the 8s) and average the rest (they are all in the 7s) I get 7.56 Hp. On chart 115, if I take the 7 best values (includes one in the 8s and one in the 6s) and average them, I get 7.356 Hp. Not bad for a 70 cc saw that is over 22 years old and has not been ported!

Mike, the Dyno is chattering if you will. So you need to draw a line at the average through the peaks and valleys. The peaks are from the grab and the valley is the release in between grabs.
If you maintained a "grab" it would slow the saw quick. If you maintain a "release" it would accelerate quick. So the average is the saws constant output.
I hope that helps explain

 

[MustangMike]

Thanks Jason, It has a KS jug, and the KS piston with the wings on it (which is why I did not replace it when I had it apart). Still wondering if those wings do anything (they sure as heck don't hurt anything), and the skirt on the original piston seemed to be a hair longer.

 

[jmssaws]

Thanks Jason, It has a KS jug, and the KS piston with the wings on it (which is why I did not replace it when I had it apart). Still wondering if those wings do anything (they sure as heck don't hurt anything), and the skirt on the original piston seemed to be a hair longer.

A ks 660 piston is a touch longer than all the others.

 

[MustangMike]

Mike, the Dyno is chattering if you will. So you need to draw a line at the average through the peaks and valleys. The peaks are from the grab and the valley is the release in between grabs.
If you maintained a "grab" it would slow the saw quick. If you maintain a "release" it would accelerate quick. So the average is the saws constant output.
I hope that helps explain

That is why I am taking a continuous string of date points within the range and averaging them, should come up with the same result. Taking every data point from 7,500 to 12,250, eliminating the one high number and computing an average from the rest (all in the 7s) should be fair.

 

[MustangMike]

A ks 660 piston is a touch longer than all the others.

And I just eyeballed it!!!

The picture is the new piston compared to the old one (which I decided not to remove, and I am now happy about that decision).

Also, the cylinder is marked B, the piston A/B.

 

[jmssaws]

I am a ks cylinder and piston fan.

 

[drf256]

I like turtles

 

[Boozer]

There are no turtles in that saw you and Dan built, nor any in those
hornet 024/26/36 of yours doc!

 

[wcorey]

That's because HP and torque ALWAYS cross at 5250. HP is force at rpm or total power. So (IIRC) HP=TQxRPM/5250.

The torque curve will be higher below 5250 and lower

Eric, this is what I couldn't remember when we were talking about syncing up the vertical graph scales, take note.

Thanks Al...!

 

[paragonbuilder]

That is why I am taking a continuous string of date points within the range and averaging them, should come up with the same result. Taking every data point from 7,500 to 12,250, eliminating the one high number and computing an average from the rest (all in the 7s) should be fair.

That should be right! I missed that you were taking all. I thought you were just taking the highs...
My bad
Carry on

 

[mels]

I like turtles, lol

 

[paragonbuilder]

Here is another comparison of Keith's and Jason's saws
First is Keith's, wearing 28" bar and chain, just breaking through the back on the oak.

Switched bar and chain to Jason's

Sent from my iPhone using Tapatalk

 

[paragonbuilder]

Someone time the cuts please.


Sent from my iPhone using Tapatalk

 

[paragonbuilder]

Don't forget that these saws both have 8 pin rims.
These saws are strong!


Sent from my iPhone using Tapatalk

 

[Chris Zautner]

Jmssaws
20.13
19.81
21.22

Deets
21.59
21.12
21.98


In the end, Either saw Would be awesome to have!!