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Ural dishes the dirt...3 wheel drive

Discussion in 'Hacks' started by outfit, Jan 18, 2011.

  1. Agent Wayward

    Agent Wayward 2 wheels good, 3 wheels better!

    Joined:
    Mar 30, 2009
    Oddometer:
    433
    Location:
    Croatia
    I agree with Mr Windmill's thoughts entirely. :)

    Sadly, I don't have video evidence, but then again, I didn't set out to show off my 3wd skills to the world. Oddly enough when I go off road, I don't often have a camerman following me and it's really quite tricky to video yourself when riding, don't you think?
    I've got some good still shots of myself on a 1WD Ural at over 2000m altitude on snow in the alps, if you're interested? And I believe their is a video on Utube of me riding through a huge water filled bombhole in a forest. Filled the carbs with water on that one. :)

    Nice to see that Dutchmen still love their chips, even if they do keep them on their shoulders. :rofl
    #21
  2. Agent Wayward

    Agent Wayward 2 wheels good, 3 wheels better!

    Joined:
    Mar 30, 2009
    Oddometer:
    433
    Location:
    Croatia
    No trailer, pulling one offroad isn't really my idea of fun, though I do pull one on the road. ;)

    OBVIOUSLY, I was poking a bit of fun at our Russian comrade.

    I do apreciate the engineering as I said.

    However, had he aproached the situation differently, he would not have got stuck, I reckon that is pretty obvious too.
    #22
  3. Sidecarjohn

    Sidecarjohn SidecarJohn Supporter

    Joined:
    Aug 29, 2008
    Oddometer:
    1,267
    Location:
    Yorkshire, England
    "I've been through worse situations than that on a standard single wheel drive Ural with a knobbly on the back."
    Evidence please, Agent Wayward ?

    Whatever else, it seems that most of those who have looked at these latest videos are reasonably impressed.
    #23
  4. claude

    claude Sidecar Jockey

    Joined:
    Mar 17, 2002
    Oddometer:
    5,756
    Location:
    Middleburg, Pa. (Snyder County)
    Looks like he could use the driven trailer wheel option.
    #24
  5. USMCG_Spyder

    USMCG_Spyder RPOC pilot

    Joined:
    Jul 11, 2006
    Oddometer:
    5,137
    Location:
    Texas
    :nod

    [​IMG]
    #25
  6. ivara

    ivara Been here awhile

    Joined:
    Feb 18, 2010
    Oddometer:
    327
    Location:
    Norway
    I found out that with almost 20 year old tires on snow, the Dnepr MT-16 2WD did not help me much at all. I struggled on flat ground :D

    But then, I'm a total novice at this stuff..

    Some model "Ivan" snow chains helped a lot, but I had to put them on the hach wheel too.
    [​IMG]
    #26
  7. Agent Wayward

    Agent Wayward 2 wheels good, 3 wheels better!

    Joined:
    Mar 30, 2009
    Oddometer:
    433
    Location:
    Croatia
    Sorry, I hadn't realised we were in court. :D

    If I can refer you, honorable Sidecarjohn, to my response above, m'lud, I'm afraid that there I shall have to rest my case.

    Once again, I'm impressed too, by the build and the rustic engineering, just not by the riding.
    #27
  8. dillon

    dillon Low Speed, High Drag

    Joined:
    Mar 29, 2006
    Oddometer:
    1,676
    Location:
    Spokavegas, WA.
    A friend of mine that I whent through diesel school with and I were talking about Urals the other day. After a few beers we started talking about taking a variable displacement hydraulic pump right off the engine, then run it to variable displacement hydraulic motors on each wheel. Once you got it synced up, you could run fast, and have good torque and have 3 wheel drive. We also started thinking about replacing the Ural engine with a small diesel. Both of us really want to do this.
    #28
  9. Qwik

    Qwik Adrenaline Addict

    Joined:
    Apr 27, 2008
    Oddometer:
    8,124
    Location:
    Aspen Colorado
    Be sure You do a Build report. I wanna see this beast
    #29
  10. outfit

    outfit Been here awhile

    Joined:
    Jul 23, 2008
    Oddometer:
    684
    Location:
    Orkney Isles
    Being unfamiliar with all round drive, is there some sort of ratio applied to the different wheel's, or is it the same ratio all round?
    #30
  11. ivara

    ivara Been here awhile

    Joined:
    Feb 18, 2010
    Oddometer:
    327
    Location:
    Norway
    you mean power distribution?

    On my my 90's Dnepr with 2WD, there's a regular differential, meaning that it'll spin the tire without traction.

    From what I understand, 2WD Urals is a part-time system with no differential...?
    #31
  12. USMCG_Spyder

    USMCG_Spyder RPOC pilot

    Joined:
    Jul 11, 2006
    Oddometer:
    5,137
    Location:
    Texas
    Correct; it is selectable direct-drive.
    #32
  13. dillon

    dillon Low Speed, High Drag

    Joined:
    Mar 29, 2006
    Oddometer:
    1,676
    Location:
    Spokavegas, WA.
    Only thing that really stopped us was how to keep the tires from "scrubbing" on pavement. I would think I would just make it so on pavement your just running the tractor rear, then run solonoid controlled valves to allow fluid to the other two wheels. It would be stupid expensive, and way cool.
    #33
  14. SamM

    SamM Jeep Overlander

    Joined:
    Nov 1, 2004
    Oddometer:
    1,478
    Location:
    West Virginia
    There is already something very similar to this. It's build on a Rokon and is called the Sumac MT. The MT means motorcycle tractor. I don't think it's possible to move enough fluid to get road speeds out of it though. Topspeed on the Sumac MT is about 25mph. I'd love to see someone figure it out! You diesel guys could do it.

    SamM
    #34
  15. USMCG_Spyder

    USMCG_Spyder RPOC pilot

    Joined:
    Jul 11, 2006
    Oddometer:
    5,137
    Location:
    Texas
    Interesting...

    [​IMG]
    #35
  16. SamM

    SamM Jeep Overlander

    Joined:
    Nov 1, 2004
    Oddometer:
    1,478
    Location:
    West Virginia
    The 3 wheeled configuration is very different. The rear wheels run on outriggers. The outrigger units lift the single rear wheel off the ground, as it is no longer powered when the outrigger wheels are installed. This is what makes it a tractor. It uses a small Honda gasoline engine that drives the hydraulic pump, each wheel then has a gerator that drives the wheel. You can run any hydraulic powered accessory made with this setup. From posthole diggers to chainsaws. The gentleman that built this uses it to dredge for gold.

    I could see myself towing a mower to cut my very large lawn. He declined my offer to build a second one for me!

    SamM

    [​IMG]
    #36
  17. ivara

    ivara Been here awhile

    Joined:
    Feb 18, 2010
    Oddometer:
    327
    Location:
    Norway
    a friend of my dad, that had worked as a mechanic all his life got partially disabled after gettin struck by lightning. H then set out to build a kind of vehicle that allowed him to enjoy the nature as before.

    The vehicle could best be classified as a small buggy, tube frame , aircooled VW engine driving a hydraulic pump - and hyd.motors on each wheel. Not sure if he ever got it finished... Sorry, no pics available

    Then, many years later, I got aware of this awesome "wheelchair":
    [​IMG]
    14HP, 4 Mph
    options include snow plow, winch, canvas top etc. And more than one moose has been pulled out of the woods with one of these
    #37
  18. bk brkr baker

    bk brkr baker Long timer Supporter

    Joined:
    Jul 19, 2006
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    11,732
    Location:
    The Bluegrass
    [​IMG]




    [​IMG]

    I saw this at the Barber Vintage Festival in '08. The fellow had a handout sheet to explain how it worked. Diesel power ,variable speed pumps,reverse!, Air adjustable ride height etc.
    The frame and forks are aluminum, so the weight is much less than it appears. The front and rear swingarms are single sided for easy wheel changes.
    While the appearance is agricultural that works for me, as I farm. I think this has good potential as a base for a three wheel drive sidecar.
    The guy also said he'd had it up past 60mph.
    #38
  19. dirtydeeds

    dirtydeeds I'm alive.

    Joined:
    Jul 15, 2004
    Oddometer:
    2,827
    Location:
    Calgary, AB, Can
    :rofl

    I'm learning. Would it be

    "Вы берете водку"

    ?
    #39
  20. eastbloc

    eastbloc comprador bourgeois

    Joined:
    Jun 27, 2003
    Oddometer:
    1,498
    Location:
    Somerset County, NJ
    I'm surprised that guy was clumsily using his hand to shift into and out of reverse.

    It's much easier and faster to do with a boot heel.
    #40