Page 2 of 17 FirstFirst 1234512 ... LastLast
Results 11 to 20 of 168
  1. #11
    Bronze Member
    Join Date
    Mar 2009
    Posts
    77
    Location
    Vermont
    Tractor
    Cub Cadet 1512

    Default Re: Mini Dozer - Project near complete

    I have less than an hour on the unit so the bugs are still being worked out. The track design was borrowed from an earlier posting so it just took lots and lots of time to cut, drill, weld, weld, weld the track together.

    Each motor/track is independent (forward and reverse and speed) of each other so it will turn right around or you can run one track faster than the other for a slow turn. The tracks do make a mess in my gravel driveway. Currently the rear is heavier than the front but after the drive system bugs are worked out I plan on building a front blade which hopefully will help improve the balance.

  2. #12
    Super Member
    Join Date
    Apr 2004
    Posts
    8,062
    Location
    SF Bay Area-Ca Olympia WA Salzburg Austria
    Tractor
    Cat D3, Deere 110 TLB, Kubota BX23 and L3800 Craftsman Mower, Deere 350C Dozer

    Default Re: Mini Dozer - Project near complete

    I have one chain driven vehicle... it's a 7 hp 1905 Oldsmobile and the drive chain is rather massive as are the sprockets... I think the combination allows for more and deeper contact... and it's only 7 horsepower.

    Good move on independent track control... there are times I wish my Cat was set-up this way.

  3. #13
    Elite Member Ductape's Avatar
    Join Date
    Feb 2006
    Posts
    4,855
    Location
    Central New Hampshire
    Tractor
    Kubota B3030HSDC

    Default Re: Mini Dozer - Project near complete

    I like it !!!!!

  4. #14
    Elite Member
    Join Date
    Jul 2006
    Posts
    4,409
    Location
    Northwest, WA

    Default Re: Mini Dozer - Project near complete

    Love your tracks, awesome job.

    Redo your motor to drive axle framing thickness by 2. Gota be some major flex going on under there.
    ::Sent from a standard desktop keyboard::

    My Photobucket

  5. #15
    Super Member mjncad's Avatar
    Join Date
    Aug 2006
    Posts
    5,114
    Location
    In the civilized First World
    Tractor
    A couple

    Default Re: Mini Dozer - Project near complete

    I like your use of rebar on the track shoes. Excellent work!
    Paraphrasing Douglas Adams - So long and thanks for all the bacon.

  6. #16

    Default Re: Mini Dozer - Project near complete

    what did you use for the track chain? Pitch and length? What size are your drive sprockets and where did you get them? thanks

  7. #17
    Bronze Member
    Join Date
    Mar 2009
    Posts
    77
    Location
    Vermont
    Tractor
    Cub Cadet 1512

    Default Re: Mini Dozer - Project near complete

    The chain is 100 pitch and each side is 10ft in length. The just watched ebay for a good price. The track sprockets as well as the hydraulic pump/control and most of the other sprockets came from Surplus Center. The track sprockets (OD around 9 inches) were ones with an odd hub (2517 taper hub) so it took awhile to find the hubs at a fair price. Surplus center doesn't have any more of these sprockets.

  8. #18
    Veteran Member GuglioLS's Avatar
    Join Date
    Feb 2005
    Posts
    1,112
    Location
    Edgewood, NM USA
    Tractor
    Jinma 354, Ford 1953 NAA Golden Jubilee, Komatsu Bulldozer

    Default Re: Mini Dozer - Project near complete

    Awesome mini dozer build! I am super impressed. Very "simple" but clever and effective design. No doubt it's got to be a blast to drive around. I would have loved to seen the do-do eating grin on your face during the first test drive. I know I had a hard time keeping a straight face first time on my crawler. Perhaps consider adding a few mini track rollers between the large front and rear sprockets? 3 or so on the bottom and one in the center at the top. Doing that would reduce strain / tension on the tracks when crawling over uneven surfaces such as rocks, mounds and valleys and overall track tension could be reduced without sacrificing the chance of the track chain coming off. Just an idea to kick around and something to consider for the future.

    Your Definitely going to have to add a blade up front and or even a rake in the back to "cover up your tracks" hehehe

    I'll take two!

    Larry
    My Fortune cookies:
    If you have to ask if you can do something, you probably can't.
    Life is short, especially if you forget to wake up the next day.
    He who hurries wastes time.
    If you must select between two evils, choose the one you haven't tried before.
    Tractor hydraulics is not rocket science.

  9. #19
    Veteran Member JoelD's Avatar
    Join Date
    Jan 2005
    Posts
    2,032
    Location
    Windham, NH
    Tractor
    Kioti LK3054xs TLB, 2004

    Default Re: Mini Dozer - Project near complete

    You are going to have to find a way to really stiffen things up if you want to stop that chain from coming off. My thought would be one of a couple of approaches and there are much better engineers on here than me.

    First, don't fight the tension fight and give some slack to the chain, then use a spring tensioner to keep the chain taught enough. Up at the drive motors you could put chain guides, this way, whether spinning forward or back the chain could not skip off the sprocket. You'd need to do something similar on the drive sprocket at the track.

    I think you have two alternatives if you are going with chain drive, A - Have everything so stiff that the sprockets stay aligned no matter what you are pushing, pulling nor how twisted up you have the machine.

    Or B - Provide for movement.

    Another option, which may be a little more foregiving would be belt drive, deep V don't slip for nothing (or even two), but a lot easier, in my opinion, to keep on the pulleys (with guides).

    Awsome build, I bet you are as good at welding as you've ever been.

    Joel
    Joel
    2004 Kioti LK3054XS TLB
    Woods Box Blade
    King Cutter Tiller
    Three Point Snow Blower
    York rake
    60 inch king kutter tiller
    1994 Ford F600 Dump Truck "Kioti Hauler"

  10. #20
    Super Star Member IslandTractor's Avatar
    Join Date
    Sep 2005
    Posts
    16,817
    Location
    Prudence Island, RI
    Tractor
    2007 Kioti DK40se HST, Woods BH

    Default Re: Mini Dozer - Project near complete

    I am impressed. What a great project and beautifully done. I love the tracks.

Page 2 of 17 FirstFirst 1234512 ... LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.