MS661 vs 390XP

[KG441c]

Jeesh i have cut 2 cord already with my hybrid and you guys have not even figured out what saw to grab yet,the x27 will be done splitting it while you figure our which axe to use next

. I like the x27

 

[bwalker]

And thats exactly what people should roll with..the seconds dont matter , but in your case dealer support is the biggest one.

The only thing I need a dealer for us parts and warranty.

 

[cgraham1]

Faster in 25" wood? Ported 661, 390xp, or 7900/7910?

390 hands down.

I don't have much time on my 661, but my 2188 is definitely faster/stronger than my 7900. All are ported by the same guy, in Tennessee.

 

[big t double]

Depends on what street your on. If your on my street, 90cc is the fastest with a 20"

I think your 90cc saw had a bad childhood or something...it seems mad at the world. Especially with a 20

 

[big t double]

Ted told me last night about your HD and HD2 air filter showdown..awesome.

I did forget to mention that we changed elevation by about a foot

 

[cary911]

Anyone ever run a 42" on a 390xp?

 

[mdavlee]

I might try a 50" on a 385 soon.

 

[MustangMike]

Keith, with the temp changes we have been having here lately I'm starting to wish more of my saws were M-Tronic! I don't like having to adjust them every time I run them. Also, the ported saws seem more finicky than my non ported one. Sometimes just going from morning to afternoon the conditions are quite different.

Don't know that you make up the time spent getting it to run it's best. Something to be said for a saw that just starts & runs right every time out, w/o any fuss.

 

[KG441c]

Keith, with the temp changes we have been having here lately I'm starting to wish more of my saws were M-Tronic! I don't like having to adjust them every time I run them. Also, the ported saws seem more finicky than my non ported one. Sometimes just going from morning to afternoon the conditions are quite different.

Don't know that you make up the time spent getting it to run it's best. Something to be said for a saw that just starts & runs right every time out, w/o any fuss.

I guess for someone who cant tune thats no doubt the way to go but for someone who can tune it will take maybe 30sec to touch the saw up on an outing if needed. Usually that only involves the idle. The low speed will be heard on the bottomend response and the topend will be noticed on 4 stroke out of the wood and if it cleans up when it hits the wood. Not too hard to learn to tune and the benefits over mtronics as far as performance is worth the work IMO. I like all the mtronics Ive owned though but also like having control of my saw especially on the bigend

 

[Trx250r180]

Keith, with the temp changes we have been having here lately I'm starting to wish more of my saws were M-Tronic! I don't like having to adjust them every time I run them. Also, the ported saws seem more finicky than my non ported one. Sometimes just going from morning to afternoon the conditions are quite different.

Don't know that you make up the time spent getting it to run it's best. Something to be said for a saw that just starts & runs right every time out, w/o any fuss.

Only time i readjust my carbs on ported saws are when i change oil brand ,have you checked for a crank seal leak ? I had one a couple times and saw would not stay in tune .

 

[Trx250r180]

Anyone ever run a 42" on a 390xp? View attachment 455973

Not yet ,worked ok on my ms461 though

 

[Ironworker]

I've had both smart saws and adjustable and prefer the adjustable, but I'm just a hobbiest. As far as my ported 2188, I lowered the rakers a little more than usual and what a difference it made with a 24" bar. I prefer low rakers and short bars for optimal performance on ported saws.

 

[bwalker]

Keith, with the temp changes we have been having here lately I'm starting to wish more of my saws were M-Tronic! I don't like having to adjust them every time I run them. Also, the ported saws seem more finicky than my non ported one. Sometimes just going from morning to afternoon the conditions are quite different.

Don't know that you make up the time spent getting it to run it's best. Something to be said for a saw that just starts & runs right every time out, w/o any fuss.

M tronic and autotune are a huge step in the right direction.. If only because most people have no grasp of how to properly tune a carb.

 

[bwalker]

I've had both smart saws and adjustable and prefer the adjustable, but I'm just a hobbiest. As far as my ported 2188, I lowered the rakers a little more than usual and what a difference it made with a 24" bar. I prefer low rakers and short bars for optimal performance on ported saws.

Chain setup is the thing the guys who say a 90cc is no faster than a 70cc saw in small wood can't grasp.

 

[bwalker]

I guess for someone who cant tune thats no doubt the way to go but for someone who can tune it will take maybe 30sec to touch the saw up on an outing if needed. Usually that only involves the idle. The low speed will be heard on the bottomend response and the topend will be noticed on 4 stroke out of the wood and if it cleans up when it hits the wood. Not too hard to learn to tune and the benefits over mtronics as far as performance is worth the work IMO. I like all the mtronics Ive owned though but also like having control of my saw especially on the bigend

If your four stroking at all it's likely your too rich..which is why compensating carbs are a good thing.

 

[Ironworker]

Chain setup is the thing the guys who say a 90cc is no faster than a 70cc saw in small wood can't grasp.

I was cutting some 10-12" stuff with it and it felt like I was limbing 3" limbs.

 

[bwalker]

Only time i readjust my carbs on ported saws are when i change oil brand ,have you checked for a crank seal leak ? I had one a couple times and saw would not stay in tune .

Its impossible for a carb to stay in tune across wide changes in temp or altitude. I run my saws in weather from 90 degrees down to 20 or more below zero. If it changes more than twenty degrees I verify tune.

 

[KG441c]

If your four stroking at all it's likely your too rich..which is why compensating carbs are a good thing.

I usually tune mine alil off 4 stroke out of the wood because most my cutting is around 25" wood. I stay alil more around 4 stroke out of the wood for bigger wood and just cleaning up under a load. I can tell immediately when I start cutting if my saws is where I wanna be on the bigend when I start cutting

 

[KG441c]

Electronics seem to run rich too me

 

[Trx250r180]

Its impossible for a carb to stay in tune across wide changes in temp or altitude. I run my saws in weather from 90 degrees down to 20 or more below zero. If it changes more than twenty degrees I verify tune.

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 .