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Thread: Progress on My Unimog

  1. #261
    Join Date
    Apr 2007
    Location
    Brisbane
    Posts
    585
    Just a few additions, going to have to stop some day


    Got a heavy duty bike rack so we can take our mountain bikes with us on the next trip.





    At the recent Defender Day Out we pushed the comfort limits a bit on one particular side slope.



    and finally, a couple more videos,

    First just to show our truck is a little bit faster than a normal Unimog.

    [ame]https://www.youtube.com/watch?v=65XWr0ncMQ0[/ame]

    This one shows a friend truck going down a tight creek bed.

    [ame]https://www.youtube.com/watch?v=tXQIZVyrQng&t[/ame]
    Iain
    1997 Discovery 300Tdi
    2005 Discovery TDV6 SE
    2011 Defender 110 - Sold :(
    Unimog U1250

  2. #262
    Join Date
    Jan 1970
    Location
    Brisbane, Queensland
    Posts
    5,606
    Quote Originally Posted by Iain_B View Post
    Just a few additions, going to have to stop some day





    Got a heavy duty bike rack so we can take our mountain bikes with us on the next trip.











    At the recent Defender Day Out we pushed the comfort limits a bit on one particular side slope.







    and finally, a couple more videos,



    First just to show our truck is a little bit faster than a normal Unimog.



    https://www.youtube.com/watch?v=65XWr0ncMQ0



    This one shows a friend truck going down a tight creek bed.



    https://www.youtube.com/watch?v=tXQIZVyrQng&t


    Are the U1700s a good base for a touring vehicle? They are around 30 years old now.
    L322 tdv8 poverty pack - wow
    Perentie 110 wagon ARN 49-107 (probably selling) turbo, p/steer, RFSV front axle/trutrack, HF, gullwing windows, double jerrys etc.
    Perentie 110 wagon ARN 48-699 another project
    Track Trailer ARN 200-117
    REMLR # 137

  3. #263
    Join Date
    Apr 2007
    Location
    Brisbane
    Posts
    585
    A U1700 would make a good touring vehicle, but it is quite a big truck, and the wheel track is about one tyre width wider than a Land Cruiser or Patrol. This is only a problem on tracks that have never seen a grader for years, like the CSR. We found that the remote tracks are Land Cruiser or Patrol size, and we had to push through the scrub, but at least we have the narrow track Unimog so our tyres seem to survive. Budget for two replacement tyres at the end of the CSR if you have a normal Unimog.

    An ex-military U1700 is a very basic vehicle, no heat or sound insulation, no air con, very basic seats, etc etc. If you like driving very basic trucks, then it would be fine. To "Civilize" it costs at least $20K, unless you do it all yourself, then around $5-10K. Buying a 30+ year old truck and then taking around Australia in remote areas would not be a good idea. The military ones might have been maintained properly a few years ago, but looking at the ones I have seen come off the auctions, they stopped fixing things a long time ago. I would replace everything on the air system, tanks, hoses, valves, all components. They never ran air dryers on the military ones, so after 30 years, the air tanks are full of gunk, and that ends up throughout the air system, it is only a matter of time before something fails, and then you are stuck. Other common failures are the Omnitrac tyres they all come with, don't even think about airing down for the beach unless you are lucky enough to have a set new tyres, or they will disintegrate. Most of the tyres are way over 5 years old, and very brittle from being parked without moving for so long. I don't think the ADF ever wore out the tread on tyres, just replaced them through age, so check the date stamps on the tyres. A common mod are the Hutchinson bead lock wheels, they increase the already wide track by another 150mm and they need longer wheel studs. Michelin XZL 395/85R20 tyres are currently easy to obtain, the US military are selling loads from their stock piles, most are 5 years old, but never been fitted. They are suppose to be fitted on 10" wide wheels, and standard Unimog wheels are 11".

    Top speed of the military U1700 is 90kph, and that's with engine sitting around the redline at 2700rpm to do that, to improve things fit a Claas Overdrive, and the bigger 395/85R20 tyres so you can do 100kph at 2200rpm. You will then need to fit an intercooler and get the injectors and injection pump reset so you can have enough power to drive at 90kph.

    Then you need to fit the "Working Gears" so you can drive slow enough when going down creek beds. First gear is still too fast for crawling up rocks of slopes, imagine driving a Defender without low range on anything other than a road.

    Then you will need a bigger fuel tank, as the stock ones have a useful capacity of 140lt, so only around 500km range off road.

    From talking to other Unimog owners, it costs at least $50K to get an Ex-military U1700 up to basic touring standards. Then you need to build a box on the back to live in, budget $75-100K for that with all the fittings if you do it yourself, or $150-250K for someone else to build one depending on your taste.

    Iain
    1997 Discovery 300Tdi
    2005 Discovery TDV6 SE
    2011 Defender 110 - Sold :(
    Unimog U1250

  4. #264
    Join Date
    Jan 1970
    Location
    Adelaide Hills - SA
    Posts
    12,486
    Rar110 - Iain has summed it up pretty well. We seriously looked at using a Unimog, but the amount of work required to get it 'civilized' is enormous.

    A Claas overdrive can be imported from Vos in the UK, but by the time you get it fitted, there goes $10K.

    Airconditioning - I got a quote for $8K to get that fitted.

    They are a stunning offroad vehicle, and if you are good at fabrication (like Iain is) they can be an excellent project. But for general touring, you might need the capability of a Unimog 1% of the time. The other 99% you have to suffer its shortcomings.

    We solved it like this:


    See here: Deciding on a vehicle if you are interested in how we decided what vehicle to use.

    Cheers
    David

  5. #265
    Join Date
    Jan 1970
    Location
    Brisbane, Queensland
    Posts
    5,606
    Thanks Gents. Much appreciated. Also, I've enjoyed reports from you both. Fantastic build up.
    L322 tdv8 poverty pack - wow
    Perentie 110 wagon ARN 49-107 (probably selling) turbo, p/steer, RFSV front axle/trutrack, HF, gullwing windows, double jerrys etc.
    Perentie 110 wagon ARN 48-699 another project
    Track Trailer ARN 200-117
    REMLR # 137

  6. #266
    Join Date
    Oct 2016
    Location
    Perth, AU
    Posts
    551
    Quote Originally Posted by Iain_B View Post
    ...


    and I finally updated the blog as well.

    Iain and Trish's Unimog Adventures
    Great bit of reading here - congratulations on an epic build and tour! Is the blog above still working?
    2010 TDV6 3.0L Discovery 4 SE, Alaska White, GME XRS-330c, IIDTool BT, GOE Compressor Plate, Traxide D3-DU Dual Battery Kit, Apple CarPlay and Android Auto, Rhino Rack Batwing Awning (Part time install), Pirelli Scorpion ATR+

  7. #267
    Join Date
    Apr 2007
    Location
    Brisbane
    Posts
    585
    Blog still works, but set to private for a while, send me you email address and I will add you to the subscribers.

    Quote Originally Posted by veebs View Post
    Great bit of reading here - congratulations on an epic build and tour! Is the blog above still working?
    Iain
    1997 Discovery 300Tdi
    2005 Discovery TDV6 SE
    2011 Defender 110 - Sold :(
    Unimog U1250

  8. #268
    Join Date
    Apr 2019
    Location
    Brisbane
    Posts
    1,291
    Bump

  9. #269
    Join Date
    Apr 2007
    Location
    Brisbane
    Posts
    585
    We have had a great time in our truck, been traveling a lot when not having to work. My wife has a YouTube channel with quite a few videos now.







    In terms of modifications, I have done a few small ones since last I posted here, but recently I decided to upgrade the transmission, and have taken out the 40 year old UG3/40 and replaced it with a brand new UG100/8.

    It was a tight squeeze getting it in, but will be worth it to have a modern dual syncro transmission with overdrive 8th gear, should be a lot smoother and quieter as well. It will let us cruise at 100kph at around 1950rpm, and in low range, at 1kph.

    Gears 3.jpg

    2021-10-31 17.58.16.jpg

    2021-11-08 18.30.46.jpg

    It has pneumatic forward/reverse and high/low ratio change over, and since it comes from a much heavier and more powerful Unimog, it should it will have no problems with our little truck.

    2021-08-08 14.05.05.jpg

    All I have to do now, is put the front and back axles, re-plumb the air system, a bit of wiring, and put the fuel tanks and storage boxes back in, piece of cake really
    Iain
    1997 Discovery 300Tdi
    2005 Discovery TDV6 SE
    2011 Defender 110 - Sold :(
    Unimog U1250

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