ArboristSite.com Sponsors
 
 


55 link stretch

Discussion in 'Chainsaw' started by abs111999, Oct 12, 2019.

  1. abs111999

    abs111999 ArboristSite Operative

    Joined:
    Jun 30, 2009
    Messages:
    117
    Likes Received:
    13
    Location:
    west
    the 55 link chains for the 170s stretch out after a while and exceed the adjustment max....pita
    anything wrong with drilling another hole in the bar next to the original for a little more screw travel??
     
  2. stilh036prohog

    stilh036prohog ArboristSite Operative

    Joined:
    Jun 29, 2019
    Messages:
    409
    Likes Received:
    217
    Location:
    home
    Get a new chain problem solved.
     
    Franny K and Andyshine77 like this.
  3. Andyshine77

    Andyshine77 Tree Freak

    Joined:
    Jan 25, 2004
    Messages:
    10,164
    Likes Received:
    7,769
    Location:
    Cincinnati, OH
    And check your sprocket and bar for wear, I would also guess you're running a dull chain. So yes get a new chain, sharpen it regularly and properly and make sure the drive system is in good shape.
     
    stilh036prohog likes this.
  4. blades

    blades Addicted to ArboristSite

    Joined:
    Nov 19, 2008
    Messages:
    3,497
    Likes Received:
    2,259
    Location:
    SE WI
    Might be over tensioning the chain at the start, and its best to relax the tension when through for the day. I had a problem with a customer and beam saw along these lines. 175 links of 404 full comp. They running the tension so high that they were over heating the blade as witnessed by the burn marks on the blade, stretching the chains out that I had remove 3 drive links to make useful again. I went through everything else on the unit as well before I told them it was operator error for the problem. They had to replace the blade as well ( $900). 7 ft+ long loops takes awhile to sharpen these.
     
  5. Andyshine77

    Andyshine77 Tree Freak

    Joined:
    Jan 25, 2004
    Messages:
    10,164
    Likes Received:
    7,769
    Location:
    Cincinnati, OH
    The burn marks on the BAR is actually from the heat treating of the BARS rails. You'd have to get the BAR rail red hot for it to discolor. $900 Bar well that's just a bit pricey.
     
  6. svk

    svk A little bit of everything

    Joined:
    Oct 19, 2009
    Messages:
    21,692
    Likes Received:
    55,782
    Location:
    MN
    What brand of chain?
     
    Franny K likes this.
  7. HarleyT

    HarleyT Tree Freak

    Joined:
    Dec 6, 2014
    Messages:
    14,507
    Likes Received:
    12,451
    Put up a pic of your sprocket, and one of the chain laying on the table...
     
  8. stilh036prohog

    stilh036prohog ArboristSite Operative

    Joined:
    Jun 29, 2019
    Messages:
    409
    Likes Received:
    217
    Location:
    home
    Miss match combo or its just wore out.
     
  9. abs111999

    abs111999 ArboristSite Operative

    Joined:
    Jun 30, 2009
    Messages:
    117
    Likes Received:
    13
    Location:
    west
    What carbide drill bit would you use for drilling bars...just asking..
     
    CJ Brown likes this.
  10. thomasinvancouver

    thomasinvancouver ArboristSite Member

    Joined:
    Apr 19, 2018
    Messages:
    70
    Likes Received:
    72
    Location:
    Vancouver, WA
    Pull a link from the chain as soon as you can. Increasing the distance from the bar heel to the sprocket will increase bar wear at the heel and increase the probability of throwing the chain.
     
    CJ Brown, svk and Andyshine77 like this.
  11. Patrick62

    Patrick62 Addicted to ArboristSite

    Joined:
    Jun 13, 2005
    Messages:
    2,105
    Likes Received:
    629
    Location:
    Colorado
    Those are the PMM chains, 3/8 low profile, and a .043 driver.
    Pretty effective at cutting, but there ain't a lotta steel in the chain. My answer would be to remove a drivelink.
    That 30cc engine must be running really strong to stretch the chain!
     
    CJ Brown, lone wolf and svk like this.
  12. svk

    svk A little bit of everything

    Joined:
    Oct 19, 2009
    Messages:
    21,692
    Likes Received:
    55,782
    Location:
    MN
    Or possibly faulty or off brand chain. Or maybe ran too tight!
     
    lone wolf and Andyshine77 like this.
  13. Andyshine77

    Andyshine77 Tree Freak

    Joined:
    Jan 25, 2004
    Messages:
    10,164
    Likes Received:
    7,769
    Location:
    Cincinnati, OH
    Or dull.
     
    svk likes this.
  14. farmguywithasaw

    farmguywithasaw ArboristSite Operative

    Joined:
    May 12, 2016
    Messages:
    294
    Likes Received:
    262
    Location:
    canada
    Dull chain chain too tight or lack of lubricant. Used engine oil is not bar oil!!!!!
     
    lone wolf, svk and Andyshine77 like this.
  15. Franny K

    Franny K xyz

    Joined:
    Jan 16, 2013
    Messages:
    2,404
    Likes Received:
    977
    Location:
    North eastern Ct USA
    The oil input hole will not connect to the oil input slot. Did you check before asking the question? Might be able to get a little more.

    Bar tail to sprocket distance becoming excessive?

    As long as you stay 3/8 inch or so from a spot weld normal drill bits will work. They can be sharpened. Slow,oil.
     
    lone wolf likes this.
  16. Franny K

    Franny K xyz

    Joined:
    Jan 16, 2013
    Messages:
    2,404
    Likes Received:
    977
    Location:
    North eastern Ct USA
    In another thread here the sprocket is "beat to hell" you and I both have posted for him the part # for the rim drive kit. That will get him a bit more use as 7 tooth is bigger than 6.
     
  17. HarleyT

    HarleyT Tree Freak

    Joined:
    Dec 6, 2014
    Messages:
    14,507
    Likes Received:
    12,451
  18. abs111999

    abs111999 ArboristSite Operative

    Joined:
    Jun 30, 2009
    Messages:
    117
    Likes Received:
    13
    Location:
    west
    I use Oregon 3/8 .050 lp. Not the micro crap. Regardless of how hard brush can be on a chain this setup needs 54 plus a half link.
    My chains are razor sharp.
    When I cut firewood with my 034 it would shock someone to see how fast it cuts.
    Its a pita to pull a link. Another expense buying replacement plates. What size plates are the Oregon 91?
     
  19. HarleyT

    HarleyT Tree Freak

    Joined:
    Dec 6, 2014
    Messages:
    14,507
    Likes Received:
    12,451
     
    svk likes this.
  20. NSEric

    NSEric ArboristSite Operative

    Joined:
    Jun 16, 2018
    Messages:
    320
    Likes Received:
    270
    Location:
    Nova scotia
    I'd get a 54 link chain.
    Grind the tail of the bar down a little until its fits, it will only be an issue when brand new once used a little it'll fit great.
     

Share This Page