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Thread: Series 2a 109"GS Suspension mods by military

  1. #1
    Join Date
    Jul 2016
    Location
    Gold Coast
    Posts
    490

    Series 2a 109"GS Suspension mods by military

    Hi All,

    I have a 1971 series 2a 109" GS. I know this vehicle has beefier suspension with more leaves, higher of the ground and suspension buffer extensions, but I'd like to know if the army did any chassis strengthening for such a vehicle.

    The reason I ask, is that at the front of my chassis rails, the suspension hanger brackets seems to consist of much thicker steel which would appear to come up both sides of the chassis rail to pretty much the cross member holding the steering relay. I'd like to know if this is normal, or unique to my vehicle.

    I've had to cut out that cross member, which has a weld seam between the front surface and that thicker metal from hanger, i.e. not chassis rail wall, where as the replacement cross member (I suspect a civilian version) has weld seam for front surface between cross member and actual 3mm chassis rail wall.

    Is my vehicle standard in this respect ? or standard after military mods ? or just unique ??

    Any clues welcome

    Thanks
    John

  2. #2
    Join Date
    Apr 2014
    Location
    Blair Athol, Adelaide South Aust.
    Posts
    2,630
    Pics would help explain what ur asking about.

    Cheers Rod
    Cheers, Rod


    BETSY
    1967 Series 2a. 109 4 cyl petrol, Fairey o/drive, Athol Hedges roof.
    Currently undergoing rebuild.
    Will have-- soft top, 4 wheel disc brakes, salisbury rear diff, military colour, 12 pin nato socket, dual pintle hitch....

    1975 Series 3. 109 6cyl 186, 5 speed Nissan cabstar gearbox, mechanical winch, roo bar, kings awning, 50" light bar, roof rack, twin 6"light bars, kings awning tent.

    1969 NO. 5 trailer. ARN 176 464. soft top.

  3. #3
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    24,647
    Not definitive - but:

    Australian army 109s used heavy duty springs. They also used a lift of about 50mm, which was achieved by longer shackles plus extending the fron mounting points for both front and rear springs. In the front, this involved heavy plates welded to each side of the chassis and extending the dumb irons down, and I think you may be referring to these.

    The lift also resulted in extended spring stops, with a box bolted under the rubber stop, and a cutout in the bell housing crossmember for the front prop shaft. The spring hangers, front and rear, have additional holes in the same place as the standard chassis, so it would be simple to remove the lift (need new shackle plates and dampers though).
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  4. #4
    Join Date
    Jan 1970
    Location
    Narre Warren South
    Posts
    4,764
    Just had a quick look and mine is the same as your description. The front Dumb irons are heavier and look almost like a repair section welded over the original dumb irons.
    My Series III FFR is similar but the bumper mounts are different.

    Probably a Rover Australia mod rather than Army.

    Too dark to take a photo but will try and remember to get one tomorrow.


    Colin
    '56 Series 1 with homemade welder
    '65 Series IIa Dormobile
    '70 SIIa GS
    '76 SIII 88" (Isuzu C240)
    '81 SIII FFR
    '95 Defender Tanami
    '60 SII 109 ute (gone)
    Motorcycles :-
    Vincent Rapide, Panther M100, Norton BIG4, Electra & Navigator, Matchless G80C

  5. #5
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    24,647
    Yes. The army did not modify them, they were built like that in the Rover Australia factory in Sydney, probably modifying CKD chassis, at least initially, and possibly building the chassis from scratch later. The army did, however, design the modifications.

    Allegedly, the Australian Army chassis design was adopted by Rover in Solihull as the chassis for the One Ton. (None of these were sold in Australia, and it does not seem that there are any in the country)
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  6. #6
    Join Date
    Jul 2016
    Location
    Gold Coast
    Posts
    490
    Thanks guys, you have confirmed my suspicions.

    Here's a couple of pics of the outside of each chassis rail, hard to really show the inside as they go right up to the front cross member.

    P1100137.jpgP1100138.jpg

    In the first picture the end of the outer thickening is almost at the right side of the picture.

    Now I just need to figure out the best way to repair it as my right side rail is rusted through on the inside of the original chassis wall where the cross member attaches.

    Cheers,
    John

  7. #7
    Join Date
    Jul 2016
    Location
    Gold Coast
    Posts
    490
    I also looked on remlr, but I couldn't find any documentation covering this mod, has anyone ever come across any documentation on this that they can share please ?

    Thanks
    John

  8. #8
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    24,647
    I've never seen any documentation of any kind on it - its just the way these came from the factory, and need to be seen as a variant not a modification.
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  9. #9
    Join Date
    Jan 1970
    Location
    Canberra
    Posts
    16,308
    The specification will be in the original project/contract information from the Army - there would have been a similar project to Project Perentie for these where vehicle requirements would have been specified. As with the Perentie LR would have built the vehicles to these specifications. As indicated, not mods which implies changes after the vehicles were built. Now having said that I am sure the chassis was not designed from scratch by LR but standard chassis were used and then changed (modified) to suit the contract specifications.

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

  10. #10
    Join Date
    Jul 2010
    Location
    Robertson NSW
    Posts
    271

    Series 2a 109"GS Suspension mods by military

    John, my SIII FFR doesn't have any of that additional plate stiffening on the chassis. Just the suspension mods. You say you're replacing a rusty cross member. Are you sure that plate is not a previous repair for the same reason?
    Rob
    SIII FFR 2.6; STAGE 1 3.9; RRS 4.4;
    REMLR member 114

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