Dull chains...does it really kill saws....how?

[Wolverine]

only 7 pages in and you are out? but your makin more sense than most lol

Eff, I can't eat a doughnut anytime soon. (now I'm out, lol)

 

[huskihl]

Eff, I can't eat a doughnut anytime soon. (now I'm out, lol)

Donuts and scissors and all you can think about are danimal's dingleberries

 

[jake wells]

Donuts and scissors and all you can think about are danimal's dingleberries

don't forget the Columbian supremo coffee.

 

[Mattyo]

thanks for the train wreck guys... appreciate it

 

[huskihl]

don't forget the Columbian supremo coffee.

It'll be on its way soon, Jake. I also found a recoil for that echo. I'll send them together. Gotta hook up with my bil first

 

[jake wells]

It'll be on its way soon, Jake. I also found a recoil for that echo. I'll send them together. Gotta hook up with my bil first

im not worried about it kevin its not the end of the world.

 

[rogue60]

Bar heat has little to do with it IMHO has anyone see a melted bar pad on a plastic saw? that being the 1st contact for heat exchange, the burnt out and melted clutch area is from a stalling slipping clutch or dragging/engaged chain brake nothing to do with heat from the bar..
A melted burnt out clutch side of a saw can be caused by a dull chain and all the stalling from pushing pulling up with the dogs to get it to cut, but you can get the same results with a sharp chain and the operator dogging in pulling up stalling the clutch bacictly abusing a saw out of what it was designed to do with no let up. Stalling the chain is a slipping clutch on a saw it generates lots of heat.
The engine melt down is the easy part with all the said abuse above comes excess heat in the engine form all the overworking and it doesn't take long with a mix of 40/50:1 for the oil film to break down under those circumstances and allow piston to bore contact and we have all seen the results of that..
All this being said with the inexperienced homeowner in mind running whatever cheap oil fuel they can get abusing a saw in a manner it was never designed for.

 

[Deets066]

It all adds up, heat generated by the chain and bar is compounded with the heat from the clutch as you just stated. None of it is good

 

[danimal]

don't forget the Columbian supremo coffee.

Actually,,, I drink sumatra.
Smoky-earthy, just like me scotch tastebuds.
Dont ferget the immodium flavored doughnuts.


sumone mention trainrek?

 

[JT78]

Yes a dull chain will kill a saw mostly because of heat being generated as stated before the dull chain doesn't cut therefore most people push harder on the saw causing more strain on the engine and the higher revs along with elongated cuts takes its toll quickly.
Example : bought a homeowner owned husky 55 a few years back was fried due to him running a dull chain constantly. I cleaned up the cylinder sanded and polished the piston cause I couldn't find a closed port windowed piston for under 100.00 at the time and put a new ring in it. I keep my chains sharp! I have put just guessing around 50 gallons or more through that saw and it still running great.

 

[jake wells]

i wouldn't really know if i dull chain kills a saw, bad gas and leaking seals seem to kill the majority of saws i see.
and i don't run dull chains i keep mine sharp but i know how much dust a dull chain makes.

 

[Mattyo]

Another good point jake....I've rebuilt 50 or so saws at this point. Can't say any one of them was due to a dull chain

 

[Lone Wolf]

Another good point jake....I've rebuilt 50 or so saws at this point. Can't say any one of them was due to a dull chain

Well put a dull chain on one give it to a dull person and tell him to cut all day with it and see what happens!

 

[MustangMike]

I believe I've seen a few fried saws that are the result of a dull chain. Specifically, replaced the scored pistons on a 461 and 660. In addition, the 066 I got has a piston that looks like it almost fried (slight scoring on the exhaust side, but the rings are still free). I'll bet this was also due to a dull chain.

 

[Mattyo]

or not enough oil in the mix....

 

[paragonbuilder]

How many saws will run practically forever when treated properly. Case in point, my 55. 20 years it was my only saw. Cleared the lot for my first house, and bucked it all up. Then cut firewood 10+ cord a year til I found AS...
I can still see machine marks on the piston...

My dads ms260, I bucked up firewood for him one day. Saw ran great. He lent it to a "friend" with his mix. Next weekend I grabbed it, saw the chain was seriously dull and switched it out. Saw started but had absolutely no grunt.
Pulled the jug and clutch side of exhaust was fried.
That right there taught my dad and I a couple lessons...

 

[Hinerman]

My dads ms260, I bucked up firewood for him one day. Saw ran great. He lent it to a "friend" with his mix. Next weekend I grabbed it, saw the chain was seriously dull and switched it out. Saw started but had absolutely no grunt.
Pulled the jug and clutch side of exhaust was fried.
That right there taught my dad and I a couple lessons...

1) Never loan a saw
2) If you do, get a $2000 deposit

 

[paragonbuilder]

1) Never loan a saw
2) If you do, get a $2000 deposit

I was thinking #2 was never run a dull chain...
But that works too!

 

[bplust]

Another good point jake....I've rebuilt 50 or so saws at this point. Can't say any one of them was due to a dull chain

Ironically, I lent out that 350/346 you built for me two tanks into it's life. When I got it back, it dropped like a rock if you held it by the starter handle. Pressure & vac were good, and I supplied mixed fuel. The chain looked like my buddy was cutting sheet metal. Too bad, that was a nice saw you put together.

 

[rogue60]

or not enough oil in the mix....

I kinda agree on that one people seem to accept melted piston smeared up and down the bore is normal if a saw is pushed hard and nothing to do with the lack of oil in the mix. I've pushed 066's to the point of on fire in 40+ celsius heat with no let up for hr's a day in summer and the pistons and bore are fine doing that for years, but that's not running what Stihl recommend for the oil mix.
You see it a lot in the biggers saws like the 880's only had a few tanks through them and already showing transfer on the exhaust side running 50:1 as the Stihl shop said that's the best mix to run lol.