Another chainsaw dyno...

[farminkarman]

Some 50cc gains from a 501p

Lots of grinding, but these are getting better.
View attachment 308214 View attachment 308215

 

[TreeLife]

Hey @Red97, love to see a what a ported 600/620p in your hands could yield...one that isn't a hybrid. Im going to get my dad a new 60cc saw this fall and I'm sorting thru the options. All dad does is cut firewood, often less than 20" in diameter.

 

[Nutball]

Some 50cc gains from a 501p

Lots of grinding, but these are getting better.
View attachment 308214 View attachment 308215

Looks like a winning recipe right there, I wouldn't ask for any changes. I would like to see some graphs of stock, MM, & ported 550mkII.

 

[Maintenance Chief]

Hey @Red97, love to see a what a ported 600/620p in your hands could yield...one that isn't a hybrid. Im going to get my dad a new 60cc saw this fall and I'm sorting thru the options. All dad does is cut firewood, often less than 20" in diameter.

I believe someone is selling a cs680 in the classifieds on here.

 

[TreeLife]

I believe someone is selling a cs680 in the classifieds on here.

I like those, but its as heavy as a 70-80cc rig. I really want to get dad a modernish 60cc saw in the 13ish pound range.

Ms362c/400c
562xp
Cs620p is pretty much where I'm at

 

[Maintenance Chief]

I mostly have older models but I did handle an Ms400 at the local saw shop and it was ridiculously light , for what I'm used to.

 

[Ronie]

I like those, but its as heavy as a 70-80cc rig. I really want to get dad a modernish 60cc saw in the 13ish pound range.

Ms362c/400c
562xp
Cs620p is pretty much where I'm at

I have a 562 and a 620, for a 20" bar I'd go with the 562.

 

[Nutball]

I like those, but its as heavy as a 70-80cc rig. I really want to get dad a modernish 60cc saw in the 13ish pound range.

Ms362c/400c
562xp
Cs620p is pretty much where I'm at

Would a 590 fit the bill also, or not a strong enough build?

 

[TreeLife]

Would a 590 fit the bill also, or not a strong enough build?

590/620 is the same saw with minor differences. Correct?

 

[Nutball]

Yes, plastic clutch cover, smaller bar nuts, plastic handle bar. I gots one in the classifieds somewhere. I'd buy me a Red97 501 if it sells after seeing the recent dyno graph. 60cc is not my cup of tea. I prefer a super light 50cc or super fast 90cc.

 

[Ronie]

590/620 is the same saw with minor differences. Correct?

They also have different port timing, coil and carb.

 

[Nutball]

And muffler

 

[andyshine77]

Impressive gains on that little Echo!

 

[TreeLife]

See, ask a question and guys have info.

 

[Red97]

Some little guys.

Decent gains

 

[Egg Shooter]

Some little guys.

Decent gains
View attachment 308330 View attachment 308331

Nice. Just dropped mine off at Kevins.

 

[sawmikaze]

I have a 562 and a 620, for a 20" bar I'd go with the 562.

My 555 kevin just ported is no joke.

 

[Ronie]

My 555 kevin just ported is no joke.

I bet it does. on mine I just cut a pop up, widened the exhaust, did a muffler mod and smoothed everything out, it's like a totally different saw with a 24" bar.

 

[sawmikaze]

I bet it does. on mine I just cut a pop up, widened the exhaust, did a muffler mod and smoothed everything out, it's like a totally different saw with a 24" bar.

He put the transfer caps from a 562 in this one, it impressed the hell outta me, that's tough to do with a woods ported saw these days.

 

[Dieselshawn]

Time to start porting electric saws