357xpg cylinder.

[Mange]

Have a look at this 357's cylinder. The owner said that it just stoped.....

There is 2 pics one large and one small.

 

[Mange]

I thought there would be atleast some replyes by now.
Stupid construction on this model.

 

[Crofter]

Mange, I looked at the file size and passed it up initially. I opened the pics and timed it at 5 plus minutes. I dont want to take Glens job, but smaller file sizes are helpfull to a dial up user.

Looks like that was a progressive failure. Some of the bolts went missing and then broke the other side of the cylinder flange. Bad design or bad maintenance? Stihltech says something in his signature to the effect that the best saw is only as good as the service it gets. What do you think?

 

[Mange]

I posted 2 pics one large and one small, do you mean that it takes 5min+ to download 165,7kb?

He has dropped the saw on the side. The anti vibe from the handel took the punch and the foot of cylinder cracked. Instead of taking it to someone too look it over he started it and away he went.
after a day or so he said it was running lean, but did not have time to have it looked at now. So it broke apart. The crank shaft is about 5mm crooked.

 

[Crofter]

Mange, the two pics took that long. I am just getting into this digital stuff myself and have been so far successful at avoiding the wrath of Glens, but he does make me nervous. Worse than Rocky in that respect. You have instructions in those pic files for far more detail than the computer screen is capable of showing so to include them is simply wasted according to my understanding. I think you would have to resave them at different resolution. The size of pic could stay the same but the file could be 1/4 the size.
I felt from looking at the different colours in the crack that it did not all happen at the same time. You must have some operators the equivalent of Gypo Logger over in Sveden too!

 

[Mange]

Mange, the two pics took that long. I am just getting into this digital stuff myself and have been so far successful at avoiding the wrath of Glens, but he does make me nervous. Worse than Rocky in that respect. You have instructions in those pic files for far more detail than the computer screen is capable of showing so to include them is simply wasted according to my understanding. I think you would have to resave them at different resolution. The size of pic could stay the same but the file could be 1/4 the size.

The smaller is seized down allot. about 1/10 of the original file. I posted both in case Glens or some other hightec wanted to have a closer look at the measurements

I felt from looking at the different colours in the crack that it did not all happen at the same time. You must have some operators the equivalent of Gypo Logger over in Sweden too!

This was my first thought as well
This one is however in a different game....... I asked him today if something happened to it, and his reply was: I have no idea
The man working with him told me that he drops the saw every time he stops cutting. Sometimes it lands on the side, top or hits rocks. I have 2 bore saws of his here both with cracked fronts, one of them (262) has a cracked right side engine block.
The design is not to blame in this case. This is operator fault. It must have been quite a bit of force to crack the cylinder.

 

[Mange]

Has any one ever seen this happen to a cylinder before, regardless of brand?

 

[sedanman]

I saw a nitro Harlyey do that. It blew the jug off with such force that it flatened the top frame tube/fuel tank and bruised the riders chest.

 

[woodshop]

Crofter not trying to dissagree with you, I was corrected by Glens and Spacemule among other when I tried to post large pic, and I am glad they helped me. But there does seem to be an advantage to large pics if you have broadband and can download them, as you can blow them up, crop out the section in question and it still had enough detail. The smaller ones just don't have enough pixels for that. Pic below is a section of the one Mange sent... look at the detail still. Unfortuneately, the piston part of the pic was out of focus a bit, and thus the part we really wanted to blow up and look at was fuzzy.

Dave

 

[Mange]

I am not good at this at all, but for those who are it must be better to work with a large pic.

For those who are interested but can not download, just ask and I am sure there is help not far away. I did post in the text how large they where, so if the size off the pic is a problem then after reading the size why bother to download? In future i will not write the sizes and let you find out anyway.

Can the part of the pic you posted Woodshop be restored from that to show the cylinder in the pic I posted?

 

[Mange]

Back to topic.
This is one of the strangest things I have seen so far.
This is a standard saw, nothing special, the user insist that nothing special happened to it
What could have coursed this if not mechanic force?

 

[stihltech]

operator

We can make saws perfect, but the operator is the great unknown.

 

[woodshop]

Can the part of the pic you posted Woodshop be restored from that to show the cylinder in the pic I posted?

Mange the cylinder part of the pic unfortunately is not in focus like the spark plug part of the pic is, as the pic below shows. For a pic to have all depths in focus, it needs to be taken at a higher f-stop, which means it will then need more light. Most digitals (that cost less than a good chainsaw) won't let you manually adjust f-stop. If you have a macro mode, you might try that, but indoor lighting might still be an issue.

As for the cylinder in question, Mange said "they guy drops the saw every time he stops cutting". Enough said.

Dave

 

[rahtreelimbs]

Although I have never seen a saw break like that, it doesn't surprise me. I only let one or two guys run my better modded saws, even then I am a little apprehensive. I have some decent $$$ rapped up in some of these saws. I see the stupidity of throwing/dropping saws all too often!

 

[Lawn Masters]

They're delicate machines built for work, not throwing/dropping on rocks and the like.