In loving memory of Kenis D. Keathley 6/4/81 - 3/27/22 Loving father, husband, brother, friend and firewood hoarder Rest in peace, Dexterday

Cutting problem

Discussion in 'Chainsaws and Power Equipment' started by papadave, May 21, 2014.

  1. MasterMech

    MasterMech The Mechanical Moderator

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    .050 bar means the chain is the right gauge since any other size is thicker and would not fit the bar. 8 pin is about right for a 455 running .325 chain. If the wrong pitch chain was on the saw, it most likely would be very noticeable before he ever got near a log.

    I'm thinking it has to be the angles, the edge, or the rakers causing him to drift in the cut.
     
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  2. jeff_t

    jeff_t

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    You have a 20" b&c that is 3/8, and a 18" .325? I'd make sure you have a 3/8" sprocket. 8 pin would be good for .325, but probably a bit much for that saw with 3/8.

    I'll be thru town Saturday afternoon.
     
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  3. clemsonfor

    clemsonfor

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    Can you even fit the wrong gauge chain in a .050 bar...there all bigger right??

    This isnt a .375 or 3/8 bar that your running 3/8 lowpro chain on is it?
     
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  4. papadave

    papadave

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    Ok, so maybe I'll put on the chain that came with the saw to check that.
    I changed to rim sprockets after the original got pretty worn. This one is an 8 pin, and the chain is supposed to be 3/8" .050 72 dl.
     
  5. clemsonfor

    clemsonfor

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    I would be you money that your chain is all whacked up with wrong angles and uneven teeth that you can't see.

    Buy a new chain or let some body who knows what there doing grind it back right...I just about guarantee that the problem goes away.

    Not knocking pete here but buy a new chain and send the old ones to pete. You dont want to wait 7 days or whatever for your chains to make the trip there n back.
     
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  6. papadave

    papadave

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    You know, come to think of it...I didn't check the stamp on the 8 pin, but I'm pretty sure the 7 pin is .325.
    I'll check in a bit and report my findings with pics of the bars, chains, and sprockets.
     
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  7. papadave

    papadave

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    clemsonfor, .....agreed.
    With all the nice weather in the forecast, I have to have a running saw.
    Must.....cut.....Oak.......:thumbs:
     
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  8. papadave

    papadave

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    Just to clarify, the 18" setup is .325 with a 7 pin rim sprocket.
    The 20" is 3/8" with an 8 pin sprocket, but as was mentioned......that sprocket may be the wrong one.
    Easy enough to check.
    ETA: Didn't even think to check this when I bought it. I'm still a rookie when it comes to saws.
    Just in case no one's noticed.:rofl: :lol:
     
    Last edited: May 22, 2014
  9. clemsonfor

    clemsonfor

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    Sprocket won't make it cut circles..maybe as someone said cause chain to tighten and lossen.

    But if the sprocket is turning the chain and all else is right it will cut straight...will chew up the sprocket bit won't cut circles.
     
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  10. jeff_t

    jeff_t

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    I can bring my Timberline if you want to try it.
     
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  11. MasterMech

    MasterMech The Mechanical Moderator

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    8 pin 3/8" is a mighty tall order for a 455.

    7 pin .325 is a bit undersize on that powerhead IMO.

    You appear to be running Bizzaro sprockets. .325 8 pin 18" and 3/8" 7 pin 20" would be appropriate on that saw but I'm curious why you switched to 3/8" chain for the 20" setup. You could have stuck with .325 and not had to bother the sprocket at all when changing bar lengths.
     
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  12. papadave

    papadave

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    Thanks Jeff, but I won't be home Sat.
    Gone all day tomorrow (not cutting wood:mad:).
    Probably cutting wood Sun. and Mon. to take advantage of the weather.:thumbs:
    Making a delivery nearby?
     
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  13. jeff_t

    jeff_t

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    No, just taking advantage of the long weekend, for everyone else, anyway. My schedule is the same either way. Might get to burn some more, too :thumbs:

    Got some drywall to finish and paint, and get the room put together. Our first renters are coming in a few weeks. We'll see how that goes, but one week's rent will make three months of mortgage payments ;)

    I'll throw the sharpener in my car. I have to head home at a decent time on Monday so I get to bed early.
     
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  14. papadave

    papadave

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    Here's the thing MM.....the 20" setup came on the saw, but didn't have the rim sprocket. It was 3/8" and I don't know what the old sprocket was. The new rim sprocket is actually a 7 pin...not 8, mah bad.
    The 18" b/c combo is running with a 7 pin .325 rim sprocket which is smaller in diameter than the 3/8 7 pin that I thought was for the 20.
    Confused yet?
    Well, the pics I took aren't loading now.............
     
  15. papadave

    papadave

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    Well, the 18" chain had a few very small burrs on the d/l, so I filed those down and reinstalled that setup.
    Runnin' like a top.
    Now, to figure out WTH is going on with the other b/c combo.
    MM, so the 3/8 7 pin should work with the 72 d/l 20" ?
     
  16. MasterMech

    MasterMech The Mechanical Moderator

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    Yes!
     
  17. Stinny

    Stinny

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    Couple things Papa D... thanks for the Ibu breakfast thing before bending/lifting. Feel good after this morning. Second, I am still grinning at the difference I see with my 257 after Pete "straightened out" the bad job of sharpening I'd been having done at a local shop. After 3 tanks thru the saw this morning, in oak and ash, here is what the chain was still throwing. All cuts are still straight as an arrow down thru the oak. I'll leave it on for the next cut too.

    100_0009.JPG
     
  18. papadave

    papadave

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    I think it was bogeydave that came up with the IBU routine.
    The 18" setup runs great, and throws chips. :thumbs:
    MM, so was this a yes in response to my question or an exclamation of excitement that I got the saw running?
     
  19. clemsonfor

    clemsonfor

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    He was answering your question about the rim drives
     
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  20. papadave

    papadave

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