Another chainsaw dyno...

[MustangMike]

To worried what MustangMike is up to maybe is the loss of focus for some perhaps? Lol

Nice, but I'd rather be able to understand what DEETs did with his transfers! This stuff can get so complex!

 

[rogue60]

Nice, but I'd rather be able to understand what DEETs did with his transfers! This stuff can get so complex!

I wouldn't worry bout it Mike just keep doing what ya doing as it is what ya doing triggers a few guy's we definitely don't won't you building monster saw's that would break the internet's!!..lol

 

[David Young]

I locked this thread until we get things under control.
People disagree but let’s not make this thread a mud hole.

 

[Mastermind]

This bs is why I stay outta most threads about saws. I've gotten to the point where I just wanna do my job, and avoid insanity.

 

[David Young]

Ok opened back up. Let’s try it again.

 

[Mastermind]

Ok.....un-watching again.

Thanks for keeping an eye on this David.

I'm out.

 

[Bigmac]

Think it is a blend of turbo, and light. But this is the first try with one.

I think a true " turbo " crank is supposed to attempt to scoop the charge and throw it up the transfers.

I have a feeling it will reduce case compression and lower peak rpm, but will the lighter weight compensate and let it gain the rpm back, I thing it will have better throttle response and feel better but lose on the dyno, that’s my guess

 

[MustangMike]

I was thinking the same thing, but I guess it would depend on the case capacity to cc's of the particular saw. Some models may react differently than others.

 

[dustinwilt68]

I think what Joe is doing is great, the more data he compiles the better it becomes, look forward to more results. Thanks @Red97

 

[MustangMike]

Great thread, great info. Just wish we lived closer, I'd bring him a bunch of saws to test!

 

[ayoungtexan]

I appreciate all the testing that Joe is doing. He spends a lot of time and effort compiling this data, and I respect him for that

 

[wcorey]

As for flywheel weight alone...
Doesn't change the actual power being produced, just the dynamics of how the engine reacts to load on acceleration/deceleration.
This is something I wouldn't think the dyno is measuring at all (at least with only rpm and torque as inputs) and shouldn't affect the numbers on the graph one way or the other.

Probably a big reason why the dyno doesn't tell the whole story as to the personality of a saw...

 

[CR888]

I missed all the drama, thread gettin locked & stuff. Did the truth teller machine ruffle some feathers, did the flying tiger beat a builder's 'personal' saw? I wanna know...but I get it, once the mops have cleaned the floor, we as men just move on as if nutt'in ever happened.

 

[rogue60]

As for flywheel weight alone...
Doesn't change the actual power being produced, just the dynamics of how the engine reacts to load on acceleration/deceleration.
This is something I wouldn't think the dyno is measuring at all (at least with only rpm and torque as inputs) and shouldn't affect the numbers on the graph one way or the other.

Probably a big reason why the dyno doesn't tell the whole story as to the personality of a saw...

If it was even possible I'd add flywheel weights to my saws.
Instant revs and lack of stored energy isn't something I like in modern saw's as I don't limb pine trees or cut cookies with dog's off give me heavy clutch/crank/flywheel over instant revs any day. Just my personal preference...

 

[huskihl]

I missed all the drama, thread gettin locked & stuff. Did the truth teller machine ruffle some feathers, did the flying tiger beat a builder's 'personal' saw? I wanna know...but I get it, once the mops have cleaned the floor, we as men just move on as if nutt'in ever happened.

Most builders that are still here don’t give 2 *s-words if their saw wins a dyno run. They know there is always a better and faster one somewhere.

Pretty cool thread without any buts or tears. Hopefully Joe can continue on without any drama.

 

[MustangMike]

Actually, one of the things I like most about my 462s is the instant throttle response … great for limbing!

I would hate it if it took time to spool up every time I wanted to cut a limb!

I don't know why the thread was locked, and I was not involved, but I'm glad that it is back … darn good thread!

 

[Red97]

If it was even possible I'd add flywheel weights to my saws.
Instant revs and lack of stored energy isn't something I like in modern saw's as I don't limb pine trees or cut cookies with dog's off give me heavy clutch/crank/flywheel over instant revs any day. Just my personal preference...

The only problem I can see is as soon as the chain touches the wood thasf extra energy would dissipate. Seems the engine would have to work harder to gain rpm again.

Maybe why most race saws have lighter flywheel vs a heavier one?

Spool back up just before returning back to the wood for the up cut?

 

[Nutball]

For lightening the crank, I wouldn't do it the way you did because it will have a fan effect which could reduce power by putting work into pushing air around, but it's probably only worth a few watts. Also that design sucks air away from the transfers and sprays it into the very middle.

I think the best way to record dyno data would be to adjust the load, wait (not long at all) collect that data point, then move to the next however far apart you want them. And of course record the important peaks even if they are in an odd interval. By continuous adding or subtracting a load, you could record slightly more or less power as the dyno either absorbs stored engergy in the rotating masses, or let the engine have to put extra energy into accelerating. Again, it is probably a very small difference.

 

[Nutball]

The only problem I can see is as soon as the chain touches the wood thasf extra energy would dissipate. Seems the engine would have to work harder to gain rpm again.

Maybe why most race saws have lighter flywheel vs a heavier one?

Spool back up just before returning back to the wood for the up cut?

Yeah, you'd think they would put a lead filled finless disk of steel on, rev 17k, then hit the wood.

I guess it might snap the crank shaft though.

 

[rogue60]

The only problem I can see is as soon as the chain touches the wood thasf extra energy would dissipate. Seems the engine would have to work harder to gain rpm again.

Maybe why most race saws have lighter flywheel vs a heavier one?

Spool back up just before returning back to the wood for the up cut?

I don't mean for any kind of performance race saw thingy I mean more flywheel weight for chug along work saw power like an 090 with it's huge heavy clutch and flywheel.
Must be something wrong with me I don't want a 16k revs 600mph chain speed saw lol