Single Swiveling Bobsled

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  • January 8, 2013 at 8:13 pm #44387
    Pullsled
    Participant

    Hello all, first post and forgive me if I don’t get the terms right. I was wondering, on a swiveling single bobsled does the chain holding the logs run threw a ring mounted on the swiveling bunk? I’ve seen here in pictures where its run around the bottom cross piece and top bunk but I believe those are fixed bobsled bunks? Can’t see how that would work on a swiveling bunk. If chain goes to a ring on the swiveling bunk, where is it best located front or back? Anybody have a picture, would be great. Reason for the questions is I would like to make a small single swiveling bobsled to pull 1 to a few logs behind a 4 wheeler. Pulled some in the past hanging from the back rack on the machine for a timber framed wood/storage shed project don’t want to again. Hope I’m not intruding here as I don’t have any animal’s to pull with, would love to someday. Thanks for your time, you have such a great site going here I’m back to reading.:)

    Dan

    January 8, 2013 at 9:29 pm #76711
    Carl Russell
    Moderator

    Dan the swing-bunk should have stake pockets, and often those have rings on the side toward the rear of the sled. It is important that the chain does not wrap like it does on a fixed bunk sled, as the swing bunk can get out of orientation with the logs and sled, and then the swing won’t work.

    I don’t have any pictures because the one time I tried a swing bunk with logs I found that the load swung too easily, swinging downhill on a sideling trail….. and I flipped the sled……:mad:

    Good luck, Carl.

    January 9, 2013 at 12:34 am #76714
    Pullsled
    Participant

    Thanks for the quick reply with the info. While on the computer today came across this on Google Books, “The Transportation Of Logs On Sleds”. It’s from 1925 Yale University School Of Forestry, Bulletin No. 13, 110 pages. http://books.google.com/books?id=6O8OAQAAMAAJ&pg=RA2-PA82&lpg=RA2-PA82&dq=transportation+of+logs+by+sleds&source=bl&ots=v2wPl52iQo&sig=Pz_6Hfa_OLx_qXJnUmInQim_Sgc&hl=en&sa=X&ei=hrDsUJuIGoKtqgGAj4CIDQ&ved=0CEYQ6AEwAw Haven’t read all of it but has some drawings and is some neat history that others might enjoy.

    Dan

    January 9, 2013 at 12:39 am #76712
    Carl Russell
    Moderator

    Nice find…

    Carl

    January 9, 2013 at 1:18 am #76713
    Carl Russell
    Moderator

    I downloaded the entire Bulletin… 825 pages of the whole forestry gammit circa 1912-25, Yale School of Forestry.

    Here is just an example of the important detailed drawings…

    321071_10200247339012567_1252541648_n.jpg

    And here is a picture at the beginning of Bulletin #13 “The Transportation of Logs on Sleds”…

    16673_10200247385493729_1161755809_n.jpg

    Carl

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