.325" square

[Four Paws]

I wanted to talk specifically about .325" square chain. I think I remember reading or hearing from someone that .325" chain ground/filed square really wakes up. I am interested in learning more as I have never been really impressed with .325" chain in any make or model.

 

[concretegrazer]

Vids from Randy. 38% faster I think he said.

 

[Sierrawoodsman]

I tried .325" square and now it's all I use. On my 550. Are you going to be using a file or do you have a square grinder?


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[Sierrawoodsman]

I like the above videos that Randy did in the 261 build thread. I think there a good representation of what you can expect on a performance saw with properly filed/ground square. It definitely helps.

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[Magic_Man]

So I assume nobody manufactures square .325 and you have to grind/file your own ? Would you use the same file as 3/8 ?

 

[Cut4fun]

So I assume nobody manufactures square .325 and you have to grind/file your own ? Would you use the same file as 3/8 ?

None I know of. Yes if hand filing.

Had a friend that filed a 325 RS and replaced a RM chain and was 50% faster.

Jon made a RS square and Randy said it was 38% faster then stock RS.

 

[Cut4fun]

Our chain build off this time is going to be 325 square or round. Your choice. If you want to see how your chain compares to others.


http://opeforum.com/threads/chain-build-off-rd-3-on-crs.731/

 

[Canadian farm boy]

Here my attempt at .325 square. I've got some side beak and the DG are a touch low but wow does it ever cut fast. Started with 23rs67. I used a triangular file to convert the chain to square. I didn't really like the triangular file. I've got a couple double bevel files now to try. I don't know an exactly how much faster this chain was compared to round but in 10" red oak I was close to 2 cuts to my buddies 1.

 

[RCBS]

None I know of. Yes if hand filing.

Had a friend that filed a 325 RS and replaced a RM chain and was 50% faster.

Jon made a RS square and Randy said it was 38% faster then stock RS.

I think I have an 18" loop of .325x.050 Husqvarna branded square grind somewhere. Will try to get a pic & PN. I think it's still in the box. Never used because I don't have a file for it. Bought on accident at Paul Bunyan show a couple years ago. I had two of them and just hogged the one I used out with a round file I think.

 

[Greenthorn]

I had read in another thread that there was Oregon and Husky .325 square (Husky's H26 .063 though), maybe @Philbert or @mdavlee can enlighten us.

 

[Philbert]

Square chain is just full-chisel chain that is ground or filed differently.

Some is available from the factory as square ground. Some people take round ground full-chisel chain and grind or file it square.

That might account for some of the types you have heard about, even if you don't see it in the catalogs.

Philbert

 

[mdavlee]

I have no clue. I've only bought maybe 5 loops of .325" in 15 years.

 

[Brian Simonseth]

I think Carlton did at one time; I have a loop for one of my MS 250 that is a skip chain .325x063 square

 

[Cut4fun]

I just round filed a square chain back yesterday on a PS. Just like a normal touch up and round she was again.

I liked to see this oregon 325 square and see if it was a 33LG round that was square CL back then. Thanks for info on this.

 

[Hedgerow]

Lpx. .325 pretty much clapped out chain.



Didn't cut awesome..
But the loop of lpx I just picked up cuts even slower out of the box..

 

[concretegrazer]

Lpx. .325 pretty much clapped out chain.

View attachment 8323

Didn't cut awesome..
But the loop of lpx I just picked up cuts even slower out of the box..

The bumpers look different from what I have. Hmmm...

 

[Hedgerow]

Maybe it's not lpx??
Now I gotta go see what the other loop looks like..

 

[Hedgerow]

Ok..
Bumpers are different shape on the new chain..
But still the cutters are stamped 25 just like the old one..
What gives??

 

[Philbert]

The '25' just means that the recommended depth gauge offset is 0.025". It is not a model number. It is on lots of different cutters.

Philbert

 

[Hedgerow]

Then what the heck do I have here???
Help philbert!!