Dolmar and Market Share

[bwalker]

I have had two saws with limiter caps that ran great(ms440 and PS7900). I have had one saw(ms260) with a fixed jet carb and it ran like crap. I replaced it with a full adjust carb and solved the problem.
Now, with all of the saws above except the fixed jet model the carbs where basicly a set it and forget it afair. The ms 260 on the other hand needs to be retuned almost everytime it goes out. Can you see why a fixed jet might stink on a finicky motor like the one in a ms 260?

 

[bwalker]

FWIW the limted caps on the stihl saws are off a really crappy design. The ones Dolmar has are much easier to adjust.

 

[glens]

Which design on the Stihl saws is crappy?  There are more than one, you know.  The caps on my 036 (Zama) were very "friendly" to "adjust" what with the fully external tabs.  I've not felt the need yet on the 066 to get into them, but since it's a Walbro they could be the ones you're referring to.

Glen

 

[heviarti]

Think limiter caps are bad?? check this out:

As it sits I still run my macs because there is nothing keeping me insulated from my saw. I personally have very little use for the EPA and california regulations. I also think the senators and representatives that voted for the DMCA should be tried for treason. however lately there has been a disturbing trend.

*THE D4|\/|n GASOLINE IS EATING DIAPHRAGMS!*

If anyone here has ever worked on a model 60 or newer John deere two cylinder, they know and understand about the oil pressure operated fuel shutoff. It has two rubberized cloth backed diaphragms in it. We have already replaced two this year that the gasoline has eaten. I have heard of five more. The carb in my 1-71 was a mac carb I installed because the tillotson in it had broken an inlet nipple (previous owner) as of four years ago it ran solid. I drained it and put it up.. then started running it heavily this year. After pulling the bug out of the needle valve (don't know how it got there) the saw ran fine.. until the gasoline ate my diaphragm. something about the current gasoline ios different than it was years ago. It smeels differnet and gives chemical burns much easier... oh yeah.. and it affects my carb parts like acid. Someone needs to get to the bottom of this and thoroughly beat the person that thought it was their buisness to make their gasoline destroy components in peoples tools.

 

[glens]

It was an engineering coup to cause cessation of use of the old non-compliant equipment, don't you think?

Some thought actually goes into this stuff.  Remember when copper was so high in the late '70s you could melt down pennies and get more for the copper than you had in the materials/labor?  Next thing you know we've got copper-washed junk-metal pennies.  You might look in your palm as you're getting ready to make a purchase and decide to keep the older pennies out of circulation but the new ones look older than the old ones after a very short time of use, so if you didn't look at the actual dates, you'd likely keep the newer ones!  Underhanded, but smart design.

It's like the IRS and their <b>forced</b> "voluntary" compliance.

An enterprising individual could likely recover their cost of making dies and stamping out diaphragms for the old gear out of the new material; at least until they get shut down for encouraging non-compliance with the EPA/CARB regs.&nbsp; Meanwhile, almost every weekend more fuel is burned/splashed in a NASCAR race than might be used in a year of chainsawing worldwide.

Glen

 

[Saw Man]

Glens bring some valid views to the issue.

I find it incredible that today we:
> Have saws, trimmers, blowers, etc., at the prices we do.
> Power & performance that we do.
> Technology that we do.

Much of the credit goes to companies being forced into developing better engines thru R&D.

So, while I'm not always excited about how some regs are forcing companies into compliance...I know without them we wouldn't have what we see today.
I'm thankful for the benefits we've gotten so far, with much more comming.

 

[heviarti]

Some of the machines that are being affected by this are infact the most fuel efficient gasoline tractor ever produced.. the john deere 630. No gasoline tractor in that power range has ever topped it at the nebraska tests..

The fact that people are actually actively destroying peoples tools needs to be adressed. I am seldom one to suggest a lawsuit, but this really falls under the category of vandalism.

As to the pennies.. you know your society is going down hill when the money starts to look like subway tokens. Welcome to fake america. China produced our fruit, we produce no more steel, we have the wonders of SHAFTA and everyone wonders why the economy is "a litlle bit bad" while ignoring the fact we're darn close to depression in some areas.

Yeah, it's nioce that we have cheap trimmers... that are built to fail after not many hours. How about the latest saws? according to an echo mat at a dealership the expected "useful life" of the motor is only 300 hours. after that 300 hours most of these small saws are built to throw in the trash because the components are irrepairable. every day we complain about use of natural resources, but build saws, cars, printers and many other things to be thrown away rather than fixed and used. look at stihl. Their cylinders are chrome over aluminum.. when they fail, they're toast. if they used a hard chromed cast steel sleeve there would be no problem. you could prolly get three rebuilds or four out of the same cylinder that was just going to scrap before... or possibly just sitting in some saw shop's junk pile.. and now rather than replacing half the engine it's just a good old rings/seals/bearings job.

the four stroke trimmers are here.. the four stroke saws are next.

more later i have to go kill some starlings now.

 

[bwalker]

Their cylinders are chrome over aluminum.. when they fail, they're toast. if they used a hard chromed cast steel sleeve there would be no problem

Actually Stihl's cylinders are nicisil, which contains no chrome. A nicisil cylinder will outlast a steel sleeve several times over and infact can be replated easily when it does wear out.

 

[heviarti]

I'll have mike acres update his site. he lists them as chrome lined aluminum. What I can say from experience is that the last three stihls that went down before the 064, the 032 026 and 034 all had toasted cylinders, and according to Lizaso's saw service in Boise, Idaho there are only two facilites in the world that can plate those. the piston and cylinder were replaced in all three cases, and later on the 064 as well. (silly thing sucked some kind of plastic bearing into the jug..)

We also bought a used husky 3120XP recently, which made one cut (for us) and proceeded to die. It turned out the carb was set to wind out to 14,000. the piston and cylinder were wiped, and it looked like someone had been at the exhaust port with a cutting torch. after a full motor job including a new crank and carb it sounds like someone rattling a tin can when it idles. I think i'll stick with good old cast iron.

My latest saw is a mac 6-10 which is *supposed to be* chrome over aluminum.. It seems to be a good saw, but I know I'm eventually going to have to rebuild it, and that chrome plate is going to make my life a pain. Remember the rebuild on a 125C thread?

 

[bwalker]

.

there are only two facilites in the world that can plate those

Your dealer is feeding you a line of crap. I know of a half dozen platers that would do them in the US alone and I am sure there are many more.

 

[Grande Dog]

Do you have a name or a number for someone who does the replating?

Grande Dog
Master Mechanic
Discount Arborist Equipment and Tree Care Supplies

 

[sedanman]

U.S. Chrome, The name is a mis-nomer as the plating is NOT CHROME

http://www.uschrome.com/

find the link for "cylinder repair"

 

[jokers]

US Chrome isn`t cheap by any stretch of the imagination. They quoted me $250 + shipping to redo a Solo 667 jug.

Russ

 

[heviarti]

hmm.. I may have that done to the 6-10. I wonder how that material would perform with that overtuned husky? I will say, for all my saws that have it, I'll stick with cast iron. it's *much* easier to deal with. I can generally hone it where I need it right on my kitchen table.

I do think that I'll have The folk who run Stihls try that on their saws, and see how it does. Lizaso's is the best saw service in this part of the state, except for maybe Hall's I don't think they'd intentionally steer anyone wrong. Stallion's on the other hand... He'd sell his own mother if he could make a profit.

 

[Mcsaw]

Cylinder Plating and Sleeve's

Here's somemore people that replate cylinders.

Rick Peterson Motor Sports www.rpmsbigbore.com
Langcourt www.Langcourt.com
Millennium Technologies www.mt-llc.com

Then there's sleeve's for your cylinders

L.A. Sleeve www.lasleeve.com
Northwest Sleeve www.nwsleeve.com