560xp .325 or 3/8 pitch?

[doobin]

Actually, you need to compare 3/8x7 to .325x8 yourself to really know what works best for you.

The exact chain models you use will have an impact as well, as will the wood and even the operator - the answer is not carved in stone anywhere....

 

Also, 3/8x8 may be an option as well, with 15-16" bars - specially if a lot of limbing is involved.

 

In absolute terms, surely at the same bar length and the same chain speed (change the sprocket to achieve this), the thinner kerf on .325 will win out over 3/8?

 

For the record, on an 034 I run 3/8x8 for my 15" & 16" bars and .325x9 on a 13" bar. I was considering purchasing my next 15" bar in .325?

[Eddy_t]

In absolute terms, surely at the same bar length and the same chain speed (change the sprocket to achieve this), the thinner kerf on .325 will win out over 3/8?

 

For the record, on an 034 I run 3/8x8 for my 15" & 16" bars and .325x9 on a 13" bar. I was considering purchasing my next 15" bar in .325?

 

Running a .325 9t rim will mean the .325 will be faster in that instance, as you said with a narrower kerf, but stock .325 and 3/8 (7t) then the 3/8 is faster as it's a bigger rim, like a larger gear

 

 

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[openspaceman]

Running a .325 9t rim will mean the .325 will be faster in that instance, as you said with a narrower kerf, but stock .325 and 3/8 (7t) then the 3/8 is faster as it's a bigger rim, like a larger gear

 

 

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I'm not disputing what you find in practice but the 3/8 chain has to remove 14% more wood in making the cut and this should be significant.

 

I chose 3/8 because I found it lasted better and I was rough enough to snap .325 chains.

[Eddy_t]

I'm not disputing what you find in practice but the 3/8 chain has to remove 14% more wood in making the cut and this should be significant.

 

I chose 3/8 because I found it lasted better and I was rough enough to snap .325 chains.

 

I'm rough enough to snap a 3/8 chain, but I run all chain sizes and have no preference (well maybe .404) and I've never found much difference in kerf size of the two, but as a 560xp comes with a small rim clutch, the 8t .325 seems the better choice IMO, as it is lighter on the saw, whilst cutting as fast as the 3/8

 

 

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[openspaceman]

as a 560xp comes with a small rim clutch, the 8t .325 seems the better choice IMO, as it is lighter on the saw, whilst cutting as fast as the 3/8

 

 

OK that's what I expected, as I said I only used 3/8 as I was mostly cording up big oak tops and tended to snap .325, I used .325 on conifer before the competition from processors drove the price too low to carry on motor-manual work.

Edited December 8, 2013 by openspaceman

[doobin]

So .325 is faster than 3/8? That's what I thought

 

Openspaceman- thanks for the figure of 14%, that's interesting. If we could all flick a switch and give our saws 14% more power tomorrow I'm sure most folk would not hesitate.

 

Also, the smaller the kerf the quicker it is to sharpen. I notice this particularly on a 12" 1.1mm guage bar.

[openspaceman]

So .325 is faster than 3/8? That's what I thought

 

Openspaceman- thanks for the figure of 14%, that's interesting. If we could all flick a switch and give our saws 14% more power tomorrow I'm sure most folk would not hesitate.

 

.

 

Actually Eddy said "as fast as" and that he hadn't noticed a difference in kerf width in practice.

 

It would be an interesting test to have one saw with same bar chain and rim in both widths and cut rings from same log with a stopwatch.

[Stubby]

Actually Eddy said "as fast as" and that he hadn't noticed a difference in kerf width in practice.

 

It would be an interesting test to have one saw with same bar chain and rim in both widths and cut rings from same log with a stopwatch.

 

I am thinking some one with too much time on their hands my do just that ...Watch this space ? ....

[openspaceman]

I am thinking some one with too much time on their hands my do just that ...Watch this space ? ....

 

Maybe me also with too much time looming:thumbdown:

 

I have 2 262s, both spare but one I used for breaking down pallets, one with seized bore and .325 gear and one with split tank (wondered where smell of petrol was coming from in van) and some duff threads and 3/8 gear. Just trying to decide which to cannibalise for what. Then I can do the test.

[Eddy_t]

Maybe me also with too much time looming:thumbdown:

 

I have 2 262s, both spare but one I used for breaking down pallets, one with seized bore and .325 gear and one with split tank (wondered where smell of petrol was coming from in van) and some duff threads and 3/8 gear. Just trying to decide which to cannibalise for what. Then I can do the test.

 

Easy, fuel tank off the seizer onto the split one, no testing for a leak then

 

 

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