Thoughts?

[afleetcommand]

Two of three relatively new saws, bought a about a year ago same outfit uses them.
The two on the left came from those saws, the one on the right a "control" from another used saw not from either the same years or the same logger. Both "blue" rod bearings are completely trashed and pieces rattled around the top ends and took them too....total wrecks.....will put a dead saw(s) salvage effort to get them going from the junk pile

 

[Onan18]

50:1 vs. 32:1?

 

[jakethesnake]

I was thinking the same. Little oil

 

[Mkinslow]

What saws are these out of

 

[Chainsaw Jim]

Those appear to be 372 cranks.

 

[Bilge Rat]

Pretty blue color on them cranks!

 

[smokey7]

Wow that is a pretty blue color. Sad on such a new say tho

 

[Dub11]

Pretty blue color on them cranks!

I was gonna say that.

 

[srcarr52]

I would be suspect of their ratio method. Someone may have done some incorrect math.

 

[Bilge Rat]

But math is hard!

When i saw what math is used for in the real world i went to work and absorbed a little.
I learned how to use math from a couple of long haired machinists in the 70s.
One was my lifelong fishing buddy.
Now if i have a tap/drill chart, a few mikes and some soapstone for figguring on the concrete floor i can turn a shaft to the intended size and finish the first try!

 

[RIDE-RED 350r]

Somebody stepping over dollars to pick up dimes?? Using outboard oil at 50:1 or higher??

 

[Stump Shot]

Looks like more questions than answers.

 

[Marshy]

Stihl?

 

[Deets066]

Ratio, clogged air filters, lean, abuse, stupidity

 

[jacob j.]

The one on the far left looks a lot like several cranks I pulled out of 372XTs when they first came out. 50:1 just didn't have enough oil in it for those saws.

 

[jakethesnake]

Maybe some dull chains mixed in there too? Do you know what happened here or Your guess is as good as mine?

 

[cus_deluxe]

Looks like lots o thoughts haha, any more info? @afleetcommand

 

[David Young]

yeah what did you figure Walt?

 

[Jimmy in NC]

I've got a crank from a 125B blower.. mix was leaned out with straight gas... half a tank of mix and half a tank of straight. Piston and cylinder were fine, big end looked like that but it welded solid and hasn't moved yet. Piston and ring are still running to this day.

 

[afleetcommand]

I've got a crank from a 125B blower.. mix was leaned out with straight gas... half a tank of mix and half a tank of straight. Piston and cylinder were fine, big end looked like that but it welded solid and hasn't moved yet. Piston and ring are still running to this day.

Thats my guess. They run 50:1 And four saws came in simultaneously... Two survived. Guessing they topped them off but it had mix still.....I'm still waiting on the others....my bet is they will all trickle in this next couple of weeks.. The top ends were "scratched" but the terminal damage was from parts banging around up stairs and then when the bearings finally lunched..the pistons smacked the squish band.....LOL I can't imagine what that sounded like! Or which was louder, the saw or the crew leader!