Another chainsaw dyno...

[Red97]

So these numbers are "close" not ready to call it calibrated yet.

But all run right after each other shows pretty good.

Top 2 lines are the same saw. A mild 50mm echo hybrid.

Then a ported 620pw

Last is a bone stock echo 620p

Waiting on tech support to help dial in the calibration

 

[Red97]

This ^^^ is a cfb hybrid 044 vs the stock 660 I have. The 660 showed pretty much the same 7.1hp as it did on the other setup.




And here ^^^ we have the last dyno buster.... 3 runs back to back showing the same 9.9 ish hp as the last setup.

The runs are close but not exact. I'm pretty sure if i would have graphed every run from the old system it would have shown similar results.

Power is in the same range, this time I can do a few power runs and display them together to see the results. Just like above.

A lot more detail in these graphs, simply because I can graph every run almost instantly.

 

[Stevetheboatguy]

This ^^^ is a cfb hybrid 044 vs the stock 660 I have. The 660 showed pretty much the same 7.1hp as it did on the other setup.


View attachment 263648

And here ^^^ we have the last dyno buster.... 3 runs back to back showing the same 9.9 ish hp as the last setup.

The runs are close but not exact. I'm pretty sure if i would have graphed every run from the old system it would have shown similar results.

Power is in the same range, this time I can do a few power runs and display them together to see the results. Just like above.

A lot more detail in these graphs, simply because I can graph every run almost instantly.[/QUOTE]

Somebody give Joe a gold star please.



Steven

 

[huskihl]

This ^^^ is a cfb hybrid 044 vs the stock 660 I have. The 660 showed pretty much the same 7.1hp as it did on the other setup.


View attachment 263648

And here ^^^ we have the last dyno buster.... 3 runs back to back showing the same 9.9 ish hp as the last setup.

The runs are close but not exact. I'm pretty sure if i would have graphed every run from the old system it would have shown similar results.

Power is in the same range, this time I can do a few power runs and display them together to see the results. Just like above.

A lot more detail in these graphs, simply because I can graph every run almost instantly.

Give him yours for fuggin up the quotes?

 

[Red97]

Give him yours for fuggin up the quotes?

Damn rookies eh?

 

[MustangMike]

Congrats Joe, good to see you and the machine back in business!!!

 

[Red97]

Congrats Joe, good to see you and the machine back in business!!!

Just in time to take a couple months off. lol

 

[Stevetheboatguy]

Give him yours for fuggin up the quotes?

Damn..... Ok if I must.

 

[Stevetheboatguy]

Just for Joe






And for everyone else

 

[deye223]

View attachment 263647
This ^^^ is a cfb hybrid 044 vs the stock 660 I have. The 660 showed pretty much the same 7.1hp as it did on the other setup.


View attachment 263648

And here ^^^ we have the last dyno buster.... 3 runs back to back showing the same 9.9 ish hp as the last setup.

The runs are close but not exact. I'm pretty sure if i would have graphed every run from the old system it would have shown similar results.

Power is in the same range, this time I can do a few power runs and display them together to see the results. Just like above.

A lot more detail in these graphs, simply because I can graph every run almost instantly.

Black screen is way bettera

 

[Red97]

Ported 501p
Vs stock 261c



3 runs of the ported monster 2511t...

 

[Wolverine]

View attachment 263685
Ported 501p
Vs stock 261c

View attachment 263686

3 runs of the ported monster 2511t...

About 8,500 it gets all variable, ‘n stuff . That the new norm?

 

[sixonetonoffun]

Any thoughts on the 261 being less than advertised?

 

[Red97]

About 8,500 it gets all variable, ‘n stuff . That the new norm?

That "variable" is what .04 ftlb looks like

The new system, and graphs allow me to do as above and lay the graphs on top of each other. Gives a very good look at the power.

The old system had a ton if filtering and averaging done to make nice smooth graphs. But not seeing the actual difference in the runs in such a fine detail.

Any thoughts on the 261 being less than advertised?

It is a 1st version 261c I believe those are rated a bit less than the v2.

That is in the same ballpark as the old system so I ran with it.

 

[sixonetonoffun]

View attachment 263691

That "variable" is what .04 ftlb looks like

The new system, and graphs allow me to do as above and lay the graphs on top of each other. Gives a very good look at the power.

The old system had a ton if filtering and averaging done to make nice smooth graphs. But not seeing the actual difference in the runs in such a fine detail.



It is a 1st version 261c I believe those are rated a bit less than the v2.

That is in the same ballpark as the old system so I ran with it.

That makes sense. It just made go huh? for a minute.

 

[srcarr52]

About 8,500 it gets all variable, ‘n stuff . That the new norm?

The little echo is pushing the low end of what the system can measure. A fly lands on the torque arm and can blow the HP 5% at that little power!

 

[cuinrearview]

A fly lands on the torque arm

Variable. I can attest that the dyno is a good bit away from the pig barn.

 

[Red97]

The little echo is pushing the low end of what the system can measure. A fly lands on the torque arm and can blow the HP 5% at that little power!

Actually seeing the filtering. It is unreal how much was going on with the old system.

I think a few little wobbles in the graphs should be expected.

As no engine it truly that smooth/linear in power delivery.


I plan to do 2-3 graphs just like the 2511 to show a range for each saw tested on the new system.

Waiting on the last email from tech support to make sure my settings are 110% before claiming any of these hp numbers to be true. Should be close, but not 110% sure yet.

 

[huskihl]

Actually seeing the filtering. It is unreal how much was going on with the old system.

I think a few little wobbles in the graphs should be expected.

As no engine it truly that smooth/linear in power delivery.


I plan to do 2-3 graphs just like the 2511 to show a range for each saw tested on the new system.

Waiting on the last email from tech support to make sure my settings are 110% before claiming any of these hp numbers to be true. Should be close, but not 110% sure yet.

Do you want me to send a couple of mine back down that you already tested to compare results?

 

[Nutball]

The little echo is pushing the low end of what the system can measure. A fly lands on the torque arm and can blow the HP 5% at that little power!

I think if there are any significant losses in the system, they really show on the 2511t. I'd think they could run around 2.0hp based on some comparisons Mitch did against a 2hp top handle: 201 or 355 I can't remember. Then again, I've never felt like a ported 2511t could out cut a 35cc top handle at least when it comes to torque in larger wood.