Newbie stuck Bar and Chain 3/8 3.25 444 EWindsor

[SawTroll]

I never new that bud . Just assumed it was what it sad it was never having measured it accurately .

 

3/8" is just an approxitate (and nominal) designation - and it just gets wrong when 3/8 is "translated" into .375, that leaves the impression of being an accurate measurement.

[champagnecharly]

Ref that saw good news is oregon do drive sprocket for it and it is a K095 mount.

 

 

Parts are as below. Oregon selector guide although full of in accuracy is a godsend OREGON®: Selector Guide.

 

 

I know you don't want to spend too much - but the trouble is a worn drive sprocket will have worn the drive links which will have worn the bar.

 

 

If you change just one thing it's similar to changing the oil on your car but not changing the oil filter at the same time.

 

 

 

 

 

 

I managed to find a cheap oregon rim sprocket that will fit. Also a new nose (£6.00) for the bar. However wondering with regards to what you said.. There is wear on the bar. with sharp edges. the wear seems to be around 0.6mm

Shoudl i class it as junk?

From the list you there dont seem to be any low kickback with 20" and 3/8 could i be wrong here or is there a reason for this?

 

I also noted that there is no 3/8 when selecting the jonsered 49..

Edited June 21, 2014 by champagnecharly

[champagnecharly]

Well, given the advice and as I'm seriously cautious.. I opted to change to a 3.25 with new blade + chain.

Oregon 20 Inch K095 Pro Lite Chainsaw Bars

Oregon 21BPX078E Micro Chisel Chainsaw Chains

More than I wanted to spend but then I know it works as it should..

 

Is it my imagination or is 180psi compression on 3 pulls really quit good.

[SawTroll]

I managed to find a cheap oregon rim sprocket that will fit. Also a new nose (£6.00) for the bar. However wondering with regards to what you said.. There is wear on the bar. with sharp edges. the wear seems to be around 0.6mm

Shoudl i class it as junk?

From the list you there dont seem to be any low kickback with 20" and 3/8 could i be wrong here or is there a reason for this?

 

I also noted that there is no 3/8 when selecting the jonsered 49..

 

So called "wire edges" is a result of wear, and really should have been filed away as soon as they appeared. You may still be able to save the bar by removing them (be careful not to break them off) - it depends on how bad the wear is. At the same time, make sure the rails a level.

If you still have room for the drive tangs in the groove between the rails, the bar may be sevicable - unless the the groove is widened to much sideways, so the chain can "lean over" (typically results in crooked cutting).

 

The Oregon selector show both .325 and 3/8" for the 49SP when I look - but it may vary with the marked you chose when entering their site (avoid using the US selector). Try the Canadian version if you don't find what you want elsewhere....

 

As far as I know, the only decent "green" 3/8" chain out there are Stihl RS3 and RM3.

The Oregon Vanguard cuts very good when New (it is chisel chain), but keeping the rakers set right as the teeth are filed back is a challenge (haven't tried myself, going by what others have said here).

[SawTroll]

Well, given the advice and as I'm seriously cautious.. I opted to change to a 3.25 with new blade + chain.

Oregon 20 Inch K095 Pro Lite Chainsaw Bars

Oregon 21BPX078E Micro Chisel Chainsaw Chains

More than I wanted to spend but then I know it works as it should..

 

Is it my imagination or is 180psi compression on 3 pulls really quit good.

20" is a long bar on that saw, but it will do it.

 

Make sure the dl count of chain match with the dl count of the bar. K095 20" bars can be 78, 80 or 81dl, depending on when they were made and who made them.

The 81dl ones are closest to true 20" bars.

Edited June 21, 2014 by SawTroll

[champagnecharly]

Thanks..

 

Re your previous post i thought I may give it a go servicing this bar..

Re the 20".. i should have measured what was on it and not paid attention to the person I purchased from.. it is infact 17" with 72(or 73 i forget now) DL.

I've searched stihl for 17" for RM3 and RS3 chains and nothing of that size.. Am I banging my head against a brick wall with this bar? 17" 73 DL 3/8 and Green

do they exist?

[SawTroll]

The 72dl (not 73) .325 bars are called 18" bars, but actually is shorter, as you noted.

Stihl chain with that dl count will have to be special ordered unless the dealer makes the loops himself from a roll.

However, in .325 you don't have to og to Stihl to find good "green" chain. The Oregon BPX semi-chisel chain is "green", and should be easy to get in 72dl at any Husky or Jonsered dealer (and many other dealers).

I would prefere this chain to the RM3.

[champagnecharly]

The 72dl (not 73) .325 bars are called 18" bars, but actually is shorter, as you noted.

Stihl chain with that dl count will have to be special ordered unless the dealer makes the loops himself from a roll.

However, in .325 you don't have to og to Stihl to find good "green" chain. The Oregon BPX semi-chisel chain is "green", and should be easy to get in 72dl at any Husky or Jonsered dealer (and many other dealers).

I would prefere this chain to the RM3.

 

 

Thanks.. what about 3/8 does the same apply? The bar I have is 3/8..

 

Ok.. well now I feel even more of a fool. I was lazy and rather than count the DL .. saw a familiar number 73 engraved on the chain and wrongly assumed that was the count.. it was only when you mentioned made to order/ from reel i started to doubt.. in fact. the DL is 64. (counted 3 times to be sure..)

From tip to guard I'm measuring 17" and length off is 505mm .

 

And i though a little chainsaw maintenance was going to be simple .. how wrong could I be..

 

ok.. so anyway i now know my chain is a oregon 73. Which isn't green.

[champagnecharly]

ok.. so again I wrongly assumed that the 73 would tell me what chain I had.. in fact there are (at least) different 73 oregon. The chain doesent seem to have any blueness so can i presume it is a 73dp?.. theres is also a no 25 on top right of tooth,, if it is 73dp.. they say it's bumper link (how can you tell) with reduced kb.. is that the same as green?

[agg221]

You can make your life relatively simple here.

 

You know the pitch, DL count and, presumably the gauge.

 

At this point, you can choose any chain of that pitch and gauge and order a loop the right length.

 

You may find these links useful:

 

Chain ID table

Custom chain loops

 

Alec