Another chainsaw dyno...

[Bigmac]

The longer the bar, the harder the wood or more aggressive the chain you run on a saw the more the rpms drop as the load increases. This pulls some saws out of there peak power range. They tend to not recover as well when stalled or when starting in a cut. The heavier rotating mass has to help as well with some of the larger saws in theory.

Exactly, but I am still not sure how the flywheel effect weights in, but I know it’s a factor

 

[Definitive Dave]

OK I got a list together of the saws I am taking to visit Joe, we may not hav time to do them all, but it should be a fun day in any case.

STOCK AND WOODS PORT SAWS
Nolder pink hybrid TED44
064 Rupley/Nolder/Smitty bilt 064/66 pipe saw - we will see if a belly pipe saw will fit
Redfin MS661 running on Gas
stock 090G*
stock 090*
Zoo City Hybrid
Rita 076 Super Hi Top
EC race built 288 if I can start it*
Ken Dunn/Nolder 394
Miller Mod Saws MS460
XS441
Mofo 026 with and without air filter I hope
Eckhardt 045 AV*
EC 066 Big Bore*
stock 026*
Gypo logger 2100*

RACE SAWS
Nolder/Helsel 181 on muffler and pipe*
EC race built 371xp*
Helsel 3120 on muffler and pipe*
Benny Whitfield 2100*
Nolder 2153 race saw#
Nolder/ec 3410 on muffler and pipe*
Nolder 365 Special#
Nolder Poulan Pro 415#
Nolder 346xp NE Murder XP#
Nolder 026*
Ken Dunn/Jacob J/Nolder 394xp pipe saw

* saws may be for sale
# I will likely be selling one 3 cube and one 5 cube from this group

Wish me luck, hoping to put up some great numbers.
I will try to grab some video or pics so guys at home understand how the process works.

 

[cuinrearview]

Wow! Damn Dave. Will you guys be running stuff on Friday too?

 

[RI Chevy]

Bring your check book or credit card. Wow...

 

[RI Chevy]

OK. So. No 661 was run yet. [emoji848]
I could have sworn I read that a 661 was run on the dyno. Just can't find the results.

 

[cuinrearview]

I thought Kevin sent his down. Maybe it just didn't get published.

 

[huskyboy]

OK. So. No 661 was run yet. [emoji848]
I could have sworn I read that a 661 was run on the dyno. Just can't find the results.

A 661 and a 661 stroker were run. The stroker results were published, but not the other one.

 

[RI Chevy]

Ahhh. ok. Thanks guys...
Just curious to see how 660 and 661 compare.

 

[dustinwilt68]

2100 gypo would be cool to see

 

[ranchdadmike]

Ahhh. ok. Thanks guys...
Just curious to see how 660 and 661 compare.

As pointless as a 288/390 comparison...[emoji1787]

 

[NightRogue]

Exactly, but I am still not sure how the flywheel effect weights in, but I know it’s a factor

I can relate to this series of posts
This is how exactly i felt when running 1200 vs other big saws. You guys nailed it, recovering from load happens when the saw has enough torque. The high revvers will bog and fall flat on its face, the luggers will keep pulling and come back up when the load decreases. The rate of the work being accomplished might not be faster but they dont stop cut after cut
About the weight, im with heavier flywheel + crank + clutch combo. 090 has plenty torque and the 6 piece clutch gotta be chipping in some torque. My dealer told me AM 070 flywheel weighs more than oem and his milling customers verified the torque increase, except now with the increased weight it can snap cranks if sudden load is applied in high rpms

Keep up the interesting discussions guys [emoji106]

Sent from my INE-LX2r using Tapatalk

 

[Nutball]

I can see how that’s beneficial, but do you think it translates directly to the saw world?

Yes

 

[Czed]

OK I got a list together of the saws I am taking to visit Joe, we may not hav time to do them all, but it should be a fun day in any case.

STOCK AND WOODS PORT SAWS
Nolder pink hybrid TED44
064 Rupley/Nolder/Smitty bilt 064/66 pipe saw - we will see if a belly pipe saw will fit
Redfin MS661 running on Gas
stock 090G*
stock 090*
Zoo City Hybrid
Rita 076 Super Hi Top
EC race built 288 if I can start it*
Ken Dunn/Nolder 394
Miller Mod Saws MS460
XS441
Mofo 026 with and without air filter I hope
Eckhardt 045 AV*
EC 066 Big Bore*
stock 026*
Gypo logger 2100*

RACE SAWS
Helsel/Nolder 181 on muffler and pipe*
EC race built 371xp*
Helsel 3120 on muffler and pipe*
Benny Whitfield 2100*
Nolder 2153 race saw#
Nolder/ec 3410 on muffler and pipe*
Nolder 365 Special#
Nolder Poulan Pro 415#
Nolder 346xp NE Murder XP#
Nolder 026*
Ken Dunn/Jacob J/Nolder 394xp pipe saw

* saws may be for sale
# I will likely be selling one 3 cube and one 5 cube from this group

Wish me luck, hoping to put up some great numbers.
I will try to grab some video or pics so guys at home understand how the process works.

Do you have a 266?

 

[huskyboy]

I can relate to this series of posts
This is how exactly i felt when running 1200 vs other big saws. You guys nailed it, recovering from load happens when the saw has enough torque. The high revvers will bog and fall flat on its face, the luggers will keep pulling and come back up when the load decreases. The rate of the work being accomplished might not be faster but they dont stop cut after cut
About the weight, im with heavier flywheel + crank + clutch combo. 090 has plenty torque and the 6 piece clutch gotta be chipping in some torque. My dealer told me AM 070 flywheel weighs more than oem and his milling customers verified the torque increase, except now with the increased weight it can snap cranks if sudden load is applied in high rpms

Keep up the interesting discussions guys [emoji106]

Sent from my INE-LX2r using Tapatalk

There’s two flywheels you can use on a 372. When I mod one up I choose the lighter one for 20-24” bar, the saw spools up faster. More responsive. 28”+ bar I use the heavier flywheel. It makes it just a tad easier to maintain rpm with high load/long bar. The heavier one makes the saw vibe a bit less as well I noticed. I don’t think they necessarily affect the power output, but they affect response and tractability.

 

[NightRogue]

There’s two flywheels you can use on a 372. When I mod one up I choose the lighter one for 20-24” bar, the saw spools up faster. More responsive. 28”+ bar I use the heavier flywheel. It makes it just a tad easier to maintain rpm with high load/long bar. The heavier one makes the saw vibe a bit less as well I noticed.

I'd expect lighter piston and flywheel to improve acceleration, strato saws have lag in my experience and that could be due to piston weight. Does 385xp flywheel swaps directly? Good to know im not alone [emoji28]

So is it safe to assume for a forgiving power band daily driver, would be torque behind max hp ? So the graph will look like a pair of boobs lol. It's an exaggeration but somewhere there i think

Sent from my INE-LX2r using Tapatalk

 

[huskyboy]

Does 385xp flywheel swaps directly?

They use the same flywheel as the 372... on certain years

 

[Deets066]

Yes

I don’t agree

 

[Bigmac]

I don’t agree

Just trying to understand things, but your old hybrid, Which had a very flat torque curve with a slight peek near peak hp, Did you feel that it wanted to maintain RPM at the torque peak or did it feel like it didn’t matter what rpm you were loading the saw it would always pull? Obviously have I have never ran your saw, that’s why I asked. Most of us have ran a saw that had good RPM, but would not maintain the RPM under much load, Just trying to understand how the Dyno relates to real world power curve usage. And how do you feel it would run a long bar, forgetting the Oiler part of it, Really not trying to be controversial just trying to understand things

 

[Nutball]

I don’t agree

You have that right.



It's a question that, in my opinion, could be too easily argued either way no matter if we're talking race or work saws.

 

[Deets066]

Just trying to understand things, but your old hybrid, Which had a very flat torque curve with a slight peek near peak hp, Did you feel that it wanted to maintain RPM at the torque peak or did it feel like it didn’t matter what rpm you were loading the saw it would always pull? Obviously have I have never ran your saw, that’s why I asked. Most of us have ran a saw that had good RPM, but would not maintain the RPM under much load, Just trying to understand how the Dyno relates to real world power curve usage. And how do you feel it would run a long bar, forgetting the Oiler part of it, Really not trying to be controversial just trying to understand things

It seemed like it would hold rpm with whatever bar chain combo you put on it. Sometimes it was just a tad lower, like when I put a 36” on it.
I don’t recall ever putting a 7 pin sprocket on it