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Chainsaw "rim" sprockets

Discussion in 'Homeowner Assistance Forum' started by dh500, Jul 29, 2005.

  1. dh500

    dh500 LawnSite Member
    Messages: 58

    What is the significance of "rim" as opposed to "spur" sprockets on a chain saw?

    The Stihl web site mentions them does not explain the benefits of either type.

    Is there a cost saving when changing the worn part of a "rim" sprocket?

  2. wushaw

    wushaw LawnSite Member
    Messages: 61

    A major cost savings. The inital setup for the assembly is the same cost as the spur units but the rims are @ 5.00 each as opposed to $17-$20 for the spur model and rims usually need replacing after the second chain and not every chain replacement.
    I have an 025 Sthil and a MS260/026 and I use the same rims for both saws.
    The 025 came with the spur setup and the MS260 came with the rim setup.
    If your in need of replacing the spur then change to the rim setup and buy a few extra rims and you will be set for a long time.
  3. Lawn Masters

    Lawn Masters LawnSite Senior Member
    Messages: 850

    The spur for me, tends to wear faster and easier than the rims do. the spur is easier for people who cant see to get a chain exactly on the rim, but you cant play with the gearing of the chain to cut faster or get more power from a saw that way.

    Plus the rims are cheaper than spur sprockets, and I like that.

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