MS661 vs 390XP

[KG441c]

It is between 45 and 60 degrees 75% of the year here i bet ,so not much change for us ,i pack a little screwdriver though in case .

Brian what is your hybrid tuned to out of the cut? I tune by ear now but last time I checked I was around 14800 on mine

 

[Trx250r180]

Brian what is your hybrid tuned to out of the cut? I tune by ear now but last time I checked I was around 14800 on mine

I do not have a tach ,tune by ear also ,i have 2 hybrids ,one is just ported ,it revs a little higher than a 460 will ,the finger ported one ,you can hear a noticeable rpm increase wide open over the reg hybrid .I should get a tach someday ,would be nice just to know what they run at ,do you check rpms unloaded with tach or in the cut ?

 

[KG441c]

I use to set rpm out of the cut by 4 stroke and then check with tack but now I tune out of the cut by ear just to where its not 4 stroking. Usually screams in wood around 20 to 25" . Myself tuning on the safe side would be a slight 4 stroke and cleans up in the wood and then check out of the cut with a tach just for reference. I prefer to tune by ear though as now I have ran my saws enough to where I know what they should sound like in the cut or if its alil rich

 

[KG441c]

Last I checked with a tach I was around 14800 on hybrid and 14200 on 390. The 241c is what it is so I dont bother to check it

 

[bwalker]

Electronics seem to run rich too me

My 562 runs pretty lean and mean. Can't speak for the rest of them, but the 661 seems like a blubbering mess.

 

[KG441c]

My 562 runs pretty lean and mean. Can't speak for the rest of them, but the 661 seems like a blubbering mess.

Ya I agree. If its not buried in wood bigger than 25" its sounds like a nanny goat !! Lol!! Saw was designed for bigwood

 

[Trx250r180]

Ya I agree. If its not buried in wood bigger than 25" its sounds like a nanny goat !! Lol!! Saw was designed for bigwood

My 461 was like that also with stock coil ,after the 460 coil swap ,it ran like a real saw ,felling trees was fine ,but when you went to buck the limbs was popping and bouncing off the rev limiter .

 

[bwalker]

Ya I agree. If its not buried in wood bigger than 25" its sounds like a nanny goat !! Lol!! Saw was designed for bigwood

I don't think the saw was designed that way. I think stihl is using the customer to beta test.

 

[Moparmyway]

I do not have a tach ,tune by ear also ,i have 2 hybrids ,one is just ported ,it revs a little higher than a 460 will ,the finger ported one ,you can hear a noticeable rpm increase wide open over the reg hybrid .I should get a tach someday ,would be nice just to know what they run at ,do you check rpms unloaded with tach or in the cut ?

Package going out in the next day or so, will PM you tracking when I get it

 

[Moparmyway]

. Can't speak for the rest of them, but the 661 seems like a blubbering mess.

I think its bouncing off the rev limiter in the coil.
My Hardline has given me the "heads up"

 

[Trx250r180]

Package going out in the next day or so, will PM you tracking when I get it

 

[bwalker]

I think its bouncing off the rev limiter in the coil.
My Hardline has given me the "heads up"

What are using for a hard line tach?

 

[Moparmyway]

What are using for a hard line tach?

 

[Moparmyway]

Dont get too excited .......... the package will probably only have some crabgrass seeds and a few dull files

 

[Trx250r180]

Well this was in the last package i received

 

[bwalker]

Is that a Tiny Tach?

 

[Hedgerow]

My 562 runs pretty lean and mean. Can't speak for the rest of them, but the 661 seems like a blubbering mess.

Mine runs lean and mean also.. If it's a tad rich, it don't waste any time getting back to ragged edge...
It's a hell of a producer..
And wears a 24" bar.

 

[porsche965]

I don't think the saw was designed that way. I think stihl is using the customer to beta test.

Lot's of "thinking" there without ever having run one lol.

 

[mdavlee]

Is that a Tiny Tach?

Hardline brand

 

[MustangMike]

Perhaps I'm I'm seeing bigger temp changes day to day than you guys, and if Randy says a ported saw is more sensitive to that stuff (and he did), I believe him.

Besides, the last thing I want to be doing when I climbing over logs and going through the woods is to take my gloves off so I can tune my saw with a tiny F ing screw driver.

My 044 #2 seems to be a bit more sensitive to it than the other saws, but I really like the way that thing runs. Not quite as strong as the ported 77s, but close, and a whole lot lighter. With the 28" light bar, makes a nice nimble felling saw. Then I use the bigger guys for bucking. A 25" dead Elm gave them a nice workout today.