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Ms261 question?

Discussion in 'Chainsaw' started by Lowhog, Feb 7, 2020.

  1. farmer steve

    farmer steve outstanding in my field, 5150

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    What bar for the picco kit? I don't see any 18" bars in picco in the Bailey's catalogue for Stihl.
     
  2. full chizel

    full chizel ¯\_(ツ)_/¯

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    The Picco bar in the kit is 16”. I’m not sure if you can even get an 18” Picco bar anymore.
     
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  3. ATH

    ATH Addicted to ArboristSite

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    Oh...right, I had that backwards. Larger sprocket would increase chain speed at the cost of torque.

    @outdoortype mentioned RMPs dropping. In the cut, I assume? Combination of wider kerf and less torque delivered to the chain?
     
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  4. farmer steve

    farmer steve outstanding in my field, 5150

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    I think I saw an 18" picco for hooskies in the Bailey's catalogue . Nothing for Stihl.
     
  5. PV Hiker

    PV Hiker ArboristSite Operative

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    I gifted myself a MS261C-M and had them change out the Rim sprocket to a 3/8" size , 33RSF chain on 20" bar.

    A few weeks ago bought a new not been used MS261C-M and has the stock .325 Rim sprocket size and 20" bar. At $400.00 I could not refuse. Will put on a 26RS chain shortly.

    It was mentioned above that the 3/8" sprocket is larger diameter. Note that both use the same brake drum hub

    Here are images of both chainsaws.
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    Cheers,
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    20200214_133435_resized.jpg 20200214_133456_resized.jpg 20200214_133751_resized.jpg 20200214_133825_resized.jpg 20200214_135301_resized.jpg
     
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  6. outdoortype

    outdoortype ArboristSite Guru

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    Yes if you listen to the vids you can here the RPM's drop a lot using 3/8 vs .325 x 7. If you're using a 16" bar it might not affect the saw. But I bet it that factor would worsen with an 18" bar. Another good test would be to compare the oregon .325 narrow kerf used to be VP/VPX on a longer bar. I know Stihl guys might not want to see an Oregon speed cut bar on their saws but this combo works great and you don't have to switch sprockets. I like .325 because some of the logs are too big and heavy to lift into the truck. So you can slap on the narrow kerf and rip them in down much easier.
     
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  7. KiwiBro

    KiwiBro Hold my beer and film this...

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    Cannon did longer picco bars
     

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