Tightening chain

[Stubby]

Its important not to over tighten a hot chain, as it cools it can bend the crankshaft or destroy the nose of the bar.

 

I really hate people saying chains "stretch" they don't, the underside of the chain wears, as does bar, this causes slack.

 

When it says that a new chain is " pre stretched " do they mean " pre worn "

[skyhuck]

When it says that a new chain is " pre stretched " do they mean " pre worn "

 

Are you saying I'm wrong?

 

Have you ever cut dirty timber and found that suddenly your chain is real slack? Is it not the abrasion that speeds up the "wear"?

 

If chains stretched how do they still locate in the sprocket?

[Mull]

Are you saying I'm wrong?

 

 

 

Have you ever cut dirty timber and found that suddenly your chain is real slack? Is it not the abrasion that speeds up the "wear"?

 

 

 

If chains stretched how do they still locate in the sprocket?

 

 

When you say not to over tighten a hot chain, are you not suggesting that it gets smaller/shorter as it cools?

 

 

Sent from my iPhone using Arbtalk

[skyhuck]

When you say not to over tighten a hot chain, are you not suggesting that it gets smaller/shorter as it cools?

 

 

Sent from my iPhone using Arbtalk

 

Metal expands when hot and contracts when cold, do you have much experience with chain saws?

[Mull]

Metal expands when hot and contracts when cold, do you have much experience with chain saws?

 

 

Expansion and contraction, I'd say that stretching is a perfectly acceptable description of this process.

Just weekend use.

 

 

Sent from my iPhone using Arbtalk

[Stubby]

Are you saying I'm wrong?

 

 

I would not dare Dave !

[skyhuck]

Expansion and contraction, I'd say that stretching is a perfectly acceptable description of this process.

Just weekend use.

 

 

Sent from my iPhone using Arbtalk

 

You should not tighten a chain because of expansion, this as above this will cause damage once it cools.

 

When people talk about chain stretch they are talking about a permanent thing, not the transient state of expansion.

 

The term "stretch" is used because that how it appears, just as we think an apple falls from a tree, when in actual fact the apple remains still and the ground rushes up to meet it.

 

Obviously people are free to use what ever term makes them happy

 

I simply find it irritating.

[Stubby]

This is what I think ( wrongly or rightly ) It is as Dave says ware . You get ware on the rivet joints which becomes clearance on the fit . The chain when being pulled on the underside of the bar " stretches " and when being pushed on the top of the bar " compresses " . Its because of this clearance in the joints that the drive links still sit in the sprocket . Add in some ware to the under side of the tie straps and the rails of the bar and you get a " farmers chain "

Edited February 18, 2017 by Stubby

[MattyF]

After you have sharpened a damaged chain some times it appears to stretch again after sharpening I've often wondered what causes this?

[Mull]

Are you saying I'm wrong?

 

 

 

 

 

 

 

I simply find it irritating.

 

 

Calm down dear[emoji3].

 

 

Sent from my iPhone using Arbtalk