Chain speed.

[trialscot]

Hi,

I know that cutting trousers are given a safety classification acording to chain speed.

Just for interest, where could I find, or how can I work out the metres per second speed of the chain on my Stihl 260?.

[Mesterh]

I'm guessing the max rpm is around 12,500.

 

So measure the distance the chain moves when you turn the drive sprocket 1 complete turn then times that by 12,500.

[skyhuck]

If you kept your finger on the trigger and the saw at full revs you could easily cut you leg clean off, even with type C's.

 

PPE will only stop a saw with a slowing chain with your finger off the trigger.

[Tree Man Tom]

If you kept your finger on the trigger and the saw at full revs you could easily cut you leg clean off, even with type C's.

 

PPE will only stop a saw with a slowing chain with your finger off the trigger.

 

Yep your right.

 

We used an old pair of type C trousers at college, put a log inside and put an 088 through it. It kept cutting through the trousers, through the log and out the other side.

[Mesterh]

I was going to say that I hit my chainsaw pants years ago with a 242 on full throttle and didnt realise apart from the fact the blocking material stopped the saw, but I dont think I'll bother because someone will say I'm wrong!

[trialscot]

Thanks for the responses, just off to look for the calculator!.

[howburn]

A collage course I was on years ago, said that the chain travelled at around 24 meters per second, I am sure there will be some variation on this.

[xdarkknight]

Yep your right.

 

We used an old pair of type C trousers at college, put a log inside and put an 088 through it. It kept cutting through the trousers, through the log and out the other side.

 

That will NOT happen with american UL rated "chainsaw chaps". which are required to stop a saw's motion within a fraction of a second. CE rated "chainsaw trousers" are only required to lessen the possibility that the user is not hurt... I take the old kevlar chaps, thank you very much. but they are friggin hot and only have back protection for the calves. I guess I'm ok with that. I don't like a saw running behind my thighs anyway.

any thoughts?