Progressive link thumb

Discussion in 'Heavy Equipment & Pavement' started by RockSet N' Grade, Jan 31, 2008.

  1. RockSet N' Grade

    RockSet N' Grade LawnSite Silver Member
    Posts: 2,454

    I have been working with Werk-Brau and their engineering department to design a new progressive link thumb in a style that suits my particular needs. Here is what is currently being manufactured for me.......its their first and a prototype. Rotation is 167 degrees and it fits flat back against the stick when not in use.

    DSC00620.jpg
     
  2. RockSet N' Grade

    RockSet N' Grade LawnSite Silver Member
    Posts: 2,454

    You probably can't see the numbers, but the width is about 15" and fits inside an 18" bucket. What I lose is the ability to use a 12" bucket to dig deeper than the depth of the bucket, but I don't use a 12" that often. What I gain is tremendous. My current thumb is a direct link with 93 degree rotation.....with the 167 degree I have alot more versatility and don't have to move my machine as much. I have been involved in this little project for over a year. Will see how she works come spring.
     
  3. bobcat_ron

    bobcat_ron LawnSite Fanatic
    Posts: 10,089

    Looks like it'll be nice for grabbing rocks better.
     
  4. RockSet N' Grade

    RockSet N' Grade LawnSite Silver Member
    Posts: 2,454

    The major manufacturers out there offer progressive link thumbs that are "tined", but that does not work for my application. I needed a solid faced with a thumb nail on the end to tweek the rocks into place as I set them. This seems to be the end solution, several comprimises had to be made in design (such as width), but all and all it should work. Maybe Werk-Brau will have this new item at Con-Expo and I'm not gonna ask Ksss for pics 'cause I don't want to owe him a lap dance.
     
  5. Construct'O

    Construct'O LawnSite Bronze Member
    from Sw Iowa
    Posts: 1,387

    Hi ! Rock
    Had to move this because of brain lapse!:rolleyes:

    Here i thought you was busy working all summer,now we find out............ the rest of the story.So will you be getting credit of any kind for this design ,or just the satfaction of helping design something that will work for your use and maybe bennfit several other people along the way.

    If it it without any kickback then all i have to say is your a "real nice guy"

    Glad to see you have been putting your time too good use all>>>>>>> year long.Also glad to see that some big companys do take time to listen to the small contractors and companys.Good luck:usflag:
     
  6. Scag48

    Scag48 LawnSite Fanatic
    Posts: 6,068

    I can't tell, but is the edge on the thumb replaceable?
     
  7. Construct'O

    Construct'O LawnSite Bronze Member
    from Sw Iowa
    Posts: 1,387

    Do you mean the nail as Rock is calling it.If not i think that would be a good idea to make it replaceable.

    You might have hit it on the nail so to speak!Way to go there:drinkup::usflag:
     
  8. Scag48

    Scag48 LawnSite Fanatic
    Posts: 6,068

    Yeah, that's what I was talking about. I've seen guys who run tine thumbs in heavy rock bolt extenders to the tines so that the thumbs that are $5K last longer.
     
  9. AWJ Services

    AWJ Services LawnSite Platinum Member
    from Ga
    Posts: 4,276

    The thumb rolls so far back that it will also help keep those really heavy rocks closer to the center of gravity.
    It looks really good.
    If they would also add a set of bolt in teeth it would be dual purpose thumb.
    The best of both worlds.
     
  10. Construct'O

    Construct'O LawnSite Bronze Member
    from Sw Iowa
    Posts: 1,387

    Your thought on the use of bolts and bolt on stuff in general.Do your think i know " Cat " bolts like grade 8 are better then other company grade 8 bolts or is a grade 8 bolt a grade 8 bolt simple as that????

    There was a guy from my area that ran International TD 15 dozer,but always was breaking idler mounting bolts.He would always brag about his IH.Until i caught i'm at my Cat dealer buying grade 8 bolts for his machine:dancing:.

    From then on when i saw him i always kid him if it wasn't for those Cat bolts holding his machine togather he wouldn't get anything done!!!He did have to admit they was the only ones that would last.

    It took more then bolts to hold them togather,but that is another story.I did like the semi-dozer blade on them back then.I never thought Cat was ever going to come out with one.

    As for convenience bolt on is nice ,but for this would weld on be a better fit.

    Others jump in on the this.Please!:usflag:
     

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