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Full Comp or Skip...what's faster?

Discussion in 'Chainsaw' started by sneno77, Oct 21, 2007.

  1. sneno77

    sneno77 ArboristSite Operative

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    Sorry for another "noob" question, but I have a day off tomorrow and my FIL called me asking if I wanted to come down and cut wood w/ him tomorrow. One of the fir we decked for firewood last week has a nice straight section that's about 26" dia and he wants to do a head-to-head pitting his 2171 against my new 7900. I currently only have oregon full skip and full comp chains in my tool box and was curious what you guys thought would be faster in this situation?? We're both running 28" bars and the wood is dead/dry doug fir that will just about bury the bar. Both chains have the rakers down .03" and are freshly sharpened. I've cut the same wood w/ both chains (although not close enough together to notice the speed diff) and the 7900 won't bog w/ either unless you really stand on the dogs. :chainsaw:
     
  2. 2dogs

    2dogs Addicted to ArboristSite

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    Full skip! The wood is still sound right? Just dry?
     
  3. sneno77

    sneno77 ArboristSite Operative

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    Yes, the wood is sound. No rot. It was standing dead until last week when we decked it.
     
  4. 2dogs

    2dogs Addicted to ArboristSite

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    Then have at it with full skip, don't dog in just power it through at least till your arms give out.
     
  5. sneno77

    sneno77 ArboristSite Operative

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    Thanks man.. I thought that might be the choice so I slipped it on tonight. Please explain not using the dogs? I've never raced before and just instinctivly go into the dogs....I'll make a conscious effort to "undog" tomorrow.
     
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  6. Sprig

    Sprig Addicted to ArboristSite

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    Dawged in you can only cut down then have ta pull out and re-set 'em, no dawgs means you are the dog :D (rock forward to 20degs down, pull back and down while still cuttin' down, repeat till log killed. :) (wee edit) don't know if it really applies to 'racing' per se but forward cut (center) backward side, ^ < like dat only a bit less :D

    :cheers:

    Serge
     
    Last edited: Oct 21, 2007
  7. windthrown

    windthrown Addicted to ArboristSite

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    Skip will keep your saw revs up and chain spinning faster, but you will have less cutters, so you will not always get a faster cut. Skip is usually used on long bars here in the long bar west so that the saw is not bogged down as much and you can make larger cuts. Big trees out here. You will also dull the skip chain faster than full comp.
     
  8. SawTroll

    SawTroll Information Collector

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    I suspect the full comp will be fastest in this case, unless you use a lot of pressure on the saw.

    Have to admit that I have never run a skip chain, though - so don't trust me....:greenchainsaw:
     
  9. Ianab

    Ianab ArboristSite Operative

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    It sounds like the perfect opportunity to compare the 2 and work out what works best in that situation. :)

    Get your FIL to time you with 3 passes on each chain.. then see if he can beat you with his saw. ;)

    That way you get two chances to win, and still find out which chain works better :)

    Cheers

    Ian
     
  10. joesawer

    joesawer Addicted to ArboristSite

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    If 26" of dry doug fir wont bog the saw while dogged unless you "really stand on the dogs", there is room for a lot of improvement in your chain.
    To be fast you shouldn't dog in or rock the bar. You should keep the saw level and adjust the feed to keep the saw as close to the fastest cutting rpm as possible.
    I think a properly sharpened skip chain would be faster in dry doug fir at 26" with a stock 7900.
     
    Last edited: Oct 22, 2007
  11. Cut4fun

    Cut4fun Faster is Better

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    Just type in search skip chain. Test have been run on a 066 with skip and full comp.
     
  12. mountainlake

    mountainlake Addicted to ArboristSite

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    Seems like if you have to force it with the dogs to make it bog down your rakers are too high, a little lower and you won't need to dog. Steve
     
  13. sneno77

    sneno77 ArboristSite Operative

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    I guess I should have qualified that statement. I've mostly used 044's for the last 15yrs and compared to my old 44, I can really "stand" on the dogs on the 7900 and still not bog it. I'm confident the chain is sharp...I spent the first 10yrs of my working life sharpening almost daily.
    Thanks for all the replies...I definately have some learning to do on this racing thing.
     
  14. GASoline71

    GASoline71 Mr. Nice Guy (Moderator)

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    You mean there is other chain besides full skip? :)

    Gary
     
  15. Lakeside53

    Lakeside53 Stihl Wrenching

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    I think they are kidding us...:givebeer:
     
  16. GASoline71

    GASoline71 Mr. Nice Guy (Moderator)

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    I think so... :dizzy:

    Gary
     
  17. Peacock

    Peacock Addicted to ArboristSite

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    In my experience full comp cuts faster in hardwoods like hickory, oak and locust.
     
  18. ShoerFast

    ShoerFast Tree Freak

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    It's a strech to think you need Full-Skip on 28" bars, in 26" wood , my .02 cents,,,only if you can't 'tune' (spin) Full-Comp' chain or have 'smokingclutch' syndrome? There should not be a chip removal problim in Fir of that size.
     
    Last edited: Oct 22, 2007
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  19. GASoline71

    GASoline71 Mr. Nice Guy (Moderator)

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    I got skip on everything but my two mini saws...

    from 20" to 32"... but that is just me... However, I'm right and I'll tell ya. :givebeer:

    Gary
     
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  20. chowdozer

    chowdozer Addicted to ArboristSite

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    I have skip on all my saws. He's right and I'll tell ya! :cheers:
     

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