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Author Topic: What makes a saw a "professional saw"?  (Read 22777 times)

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Offline Ward Barnes

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Re: What makes a saw a "professional saw"?
« Reply #20 on: April 01, 2012, 12:04:32 AM »
 8) Thanks to all who have replied.  I have enjoyed the learning that each post has given me.

God Bless, Ward and Mary.
7 year old Stihl MS 390.  New Stihl trim saw MS 250.  Kubota BX 2200 tractor.  2005 F150 4X4.
Dull chains cause accidents.  Accidents cause shorter life spans.
You don't sharpen a chain when it gets dull.  You sharpen a chain to keep it from getting dull.

Offline aquacanis

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Re: What makes a saw a "professional saw"?
« Reply #21 on: April 01, 2012, 07:54:36 PM »
I believe what I am about to tell you is true in "most" cases.  Cheap home owner saws usually have one compression ring, commercial or professional saws will have two or maybe even three compression rings.  Heavy bearings on cranks while the cheaper home owner saws may even have bushings not bearings.  More machined parts on the pros and more stamped parts on the cheap saws.  It would be like comparing a hand built racing engine to an off the shelf 1950 six cylinder engine in the typical car.  There is a huge difference.  If you are going to trim a few trees in the back yard each year and cut one face cord of small fire wood buy a home model cheaper saw.  If you are going to cut 100 or more face cord of fire wood a year as I do, buy the best middle range or pro saw you can afford.  I still have a 1976 Sthil 041 farm boss, that cut 120-130 cord a year for 25 years and it is still running.  Never had a major repair, just a few minor parts.  The only real reason I bought other saws is the anti-vibration feature and I am too
old to cut that much wood anymore so I bought a little 32 cc for trimming and
a Husky 55 for falling an blocking for about 8 face cord a year.  The husky has done this now for 10 years and I just bought the 32cc Tanaka this year. First one did not start well and would not start after one tank.  They simply replaced it and the second one runs fine after I took the spark arrestor off.  It has an amazing 7 year warranty which I find hard to believe. 

Offline shelbycharger400

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Re: What makes a saw a "professional saw"?
« Reply #22 on: April 01, 2012, 09:53:08 PM »
aquacanis..  ya do know 041 stihl is a single ring?
i blew up a pouland pruner saw this year :) less than 3 wks old.  weekend slashin brush from 10 to 20 something  diameter pines.  only used it on the weekends.

Offline Al_Smith

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Re: What makes a saw a "professional saw"?
« Reply #23 on: April 01, 2012, 10:19:54 PM »
Well actually there were two piston sizes .The 44 mm had one ring ,the 48 mm had two .

Offline ladylake

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Re: What makes a saw a "professional saw"?
« Reply #24 on: April 02, 2012, 08:10:44 AM »

 The one or 2 ring doesn't matter much as quite a few pro saws use 1 ring plus a lot of 150hp snowmobile engines.  Most Husky xp saw have had 1 ring for a while as the 1 ring will make a bit more power due to less friction. I don't know if a saw could get by with a bushing instead of a ball bearing with just the mix for lube, I've never saw a bushing in a saw but have'nt had any real cheap ones apart.  I think the most important thing on a pro saw is the quality of the parts that are in it plus the power to wieght.  On the little tanaka saw make sure it's not set too lean on the high, a lot of new saws are nowdays thanks to the EPA.  The first thing I do on new saws is pull the caps and tune them right for my elevation and the gas I use.   You'll find more power also when not set too lean.  Steve
Timberking B20 15000 hours +  Case75xt grapple + forks+8" snow bucket + dirt bucket   770 Oliver   Lots(too many) of chainsaws, Like the Echo saws and the Stihl and Husky     W5  Case loader   1  trailers  Wright sharpener     Suffolk  setter Volvo MCT125c skid loader

Offline aquacanis

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Re: What makes a saw a "professional saw"?
« Reply #25 on: April 02, 2012, 12:01:52 PM »
Shelby charger400 Not to argue about one or two rings but if you go to ebay
and search "sthil 041 piston rings" they come up with many replacement kits
that include pistons and rings etc.  They all show two grooves in the piston and
two rings in the kit.  What am I missing?

Offline SwampDonkey

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Re: What makes a saw a "professional saw"?
« Reply #26 on: April 02, 2012, 01:16:14 PM »
In my experience around brush saws, it's the operator. I say this because, a few years back, if I bought a top end brush saw and said I was weed whacking around the barn on occasion I would have a full year warranty on the saw. But if I was going thinning for work I only got 90 days. They labeled it as a "professional use saw". This would be the same even if I bought a model or two lower in size. Just a couple years ago they go rid of the 90 day deal and everyone gets a year. I beleive they did this because Echo offered a full year from the get go. Now Echo is out of the top end brush saw business.
Move'n on.

Offline shelbycharger400

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Re: What makes a saw a "professional saw"?
« Reply #27 on: April 02, 2012, 04:45:15 PM »
 :'( guess im gunna have to eat my words aquacanis

i was always told to tell the singles from the doubles is by the 031/ 041 were single,  032/042 ect were the double.  i guess that is wrong.

Offline aquacanis

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Re: What makes a saw a "professional saw"?
« Reply #28 on: April 02, 2012, 05:01:01 PM »
No problem on being wrong on the rings shelby,  all I try to do anymore is
keep at 51% right and that is getting damned hard to do at 68.  he he.
An honest man when faced with irrefutable evidence that he is wrong has
only two choices admit it and correct it or become dishonest.  The latter usually
end up in Congress.

Offline Al_Smith

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Re: What makes a saw a "professional saw"?
« Reply #29 on: April 02, 2012, 10:17:44 PM »
You can't just go by model numbers .A lot of us have the IPL's ,specs etc for a mulitude of saws which give measurements etc .

For example the mention of the 042 brings to mind it is one of the few Stihl models that uses an odd size bore which is 49 MM .Highly unusual because most are of an even number like 44,48,50,52 etc .They're kind of rare but I have one myself .Nice one too .

FWIW many models of pro saws used a single ring .It's an old trick also for racers to remove one ring ,less drag .

Offline aquacanis

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Re: What makes a saw a "professional saw"?
« Reply #30 on: April 03, 2012, 01:50:10 PM »
Removing one ring and or designing with one ring somehow just doesn't set
well with me.  Ring blow by on the power stroke and slop of the piston in the cylinder comes to mind immediately.
I might be a 68 yr. old farm boy but I'll take two rings anytime.  Maybe a little
more drag and less rpm but better power running at a speed meant for the rest of the unit. 

Offline Al_Smith

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Re: What makes a saw a "professional saw"?
« Reply #31 on: April 03, 2012, 05:37:57 PM »
Keep in mind though that the piston slop on any modern engine be it saw or auto is much tighter than back in the day of the John-Deere A that used two oil rings and 3 power rings or the D4 Cat that used 4 power rings  and two oil .Those JD and Cat piston rings are like 5/16 of an inch wide .

A modern car engine has two power and one oil and those engines will out last the time tested Chevy 350 by years .Thin rings to boot .150-200 thousand miles is not uncommon .

I'm about as "old school " as they come but what is ,is . ;)

Offline aquacanis

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Re: What makes a saw a "professional saw"?
« Reply #32 on: April 04, 2012, 06:45:04 PM »
This is the end of my discussion on the ring thing Al.  And you are spot on
with the new alloy rings and only two compression and one oil ring in the new
car engines.  The new oils also play a huge part in this.  BUT ONE ring still
just does not set right with me. Enough said.  Its been a good conversation.


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