steve b Posted April 17, 2013 Share Posted April 17, 2013 Blimey I bet that is max'd out on GVW loaded ...and what sort of turning circle ? ...and a drive thru axle looks lovely but not my choice of overlander cheers Steveb Quote Link to comment Share on other sites More sharing options...
landrover598 Posted April 18, 2013 Share Posted April 18, 2013 I saw this 6x6 disco last week, didn't get chance to have a good snoop but i could see at least the rearmost axle was leaf sprung! Quote Link to comment Share on other sites More sharing options...
discomark10 Posted April 25, 2013 Share Posted April 25, 2013 Quote Link to comment Share on other sites More sharing options...
o_teunico Posted April 25, 2013 Author Share Posted April 25, 2013 8X8 seems good for getting grip, but I don´t think that it would be a good car for corners or tracks needing good articulation. Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted April 25, 2013 Share Posted April 25, 2013 8X8 seems good for getting grip, but I don´t think that it would be a good car for corners or tracks needing good articulation. If 4wd is good, 6 or 8 wheel drive ISN'T always better ! On the type of terrain where that disco shown doing its thing, ie shallow muddy surface with firm base, the 8x8 Defender would be at a distinct disadvantage, with too much floatation. I found it advantageous to lift my leading rear axle off the ground via a double acting pneumatic ram for such conditions. Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted May 4, 2013 Share Posted May 4, 2013 I'm just bumping this thread for the benefit of a friend who is not a member, and because my linking skills are Pants. Quote Link to comment Share on other sites More sharing options...
discomark10 Posted May 24, 2013 Share Posted May 24, 2013 just pinched this from another thread http://www.ebay.co.uk/itm/1960-Landrover-Sandringham-6x6-barn-find-restoration-project-/261219870244?pt=Automobiles_UK&hash=item3cd1eae624 Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted May 24, 2013 Share Posted May 24, 2013 just pinched this from another threadhttp://www.ebay.co.uk/itm/1960-Landrover-Sandringham-6x6-barn-find-restoration-project-/261219870244?pt=Automobiles_UK&hash=item3cd1eae624 It is almost certainly not a Sandringham, unless a very early version that I was unaware of because the leading axle isn't a thrudrive type. And if there isn't a second transfercase between the PTO and the pillow block on the leading axle, then it couldn't get low range, or even correct high range ratio. Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted August 3, 2013 Share Posted August 3, 2013 I have just rejoined the Pirate4x4 forum after 16 months, and in my inbox was a PM from a mr Eric Peterson, a gentleman in Texas who is rebuilding a 1960's Sandringham 6 with load sharing rear bogie suspension. Anyway, he has read some of my earlier 6x6 related discussions on Pirate, one in particular where I alluded to the British War Department patented rear bogie design. He has kindly provided a link to the restoration of the Spanish Royal Family's Mercedes G4 6x4 limousine which features a copy of the WD bogie, showing the twin centrally pivoted leaf springs and bronze trunnion bushings wrapped around the rear bogie axle tubes to keep the pinion angles in check. As you all know by now, I'm quite useless at providing links, so I hope this works. http://www.gizmag.com/go/3663/picture/8140/ If the link doesn't work, O'teunico being a Spanish internet whizz would be certain to fix it up and single out the photos of interest Bill. Quote Link to comment Share on other sites More sharing options...
discomark10 Posted August 3, 2013 Share Posted August 3, 2013 At the land rover show last weekend I saw a defender with 2 rear axles, using normal trailing arms another transfer type box on the 1st diff so it provided and extra output onver the diff housing for the last axle. I meant to get pics but forgot Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted August 3, 2013 Share Posted August 3, 2013 At the land rover show last weekend I saw a defender with 2 rear axles, using normal trailing arms another transfer type box on the 1st diff so it provided and extra output onver the diff housing for the last axle. I meant to get pics but forgot That sounds like the relatively common Ashcroft/Foley conversion. Quote Link to comment Share on other sites More sharing options...
Mr Ian Posted August 3, 2013 Share Posted August 3, 2013 Hi the series III could have been one of my early 6x6. Briefly ,I used a ser transfer case but offset the input hole away from the output shaft. This allowed a modified high range output gear to be fitted to the main box output shaft, giving same output speed at pto as the normal output. Next bit was to use a modified pto and because I had moved the centre of the input shaft I could fit a low range gear which would slide on the pto shaft. This arrangement gave fully selectable high and low for the third axle. If we could identify the history of the vehicle, looks vaguely like one i built for a garage in north Scotland. Happy memories. Ian Ashcroft Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted August 3, 2013 Share Posted August 3, 2013 That one is registered as an 88" Land Rover, petrol in 1960. Tax expired in November 1984 so it's been off the road for a while. Quote Link to comment Share on other sites More sharing options...
o_teunico Posted August 3, 2013 Author Share Posted August 3, 2013 Bill, your link is working OK Rear suspensión setup Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted August 3, 2013 Share Posted August 3, 2013 Hi the series III could have been one of my early 6x6. Briefly ,I used a ser transfer case but offset the input hole away from the output shaft. This allowed a modified high range output gear to be fitted to the main box output shaft, giving same output speed at pto as the normal output. Next bit was to use a modified pto and because I had moved the centre of the input shaft I could fit a low range gear which would slide on the pto shaft. This arrangement gave fully selectable high and low for the third axle. If we could identify the history of the vehicle, looks vaguely like one i built for a garage in north Scotland. Happy memories. Ian Ashcroft Hi Ian.I wish you were living and operating your business in Australia back in the 1970's lol. Just finding an engineering shop with sufficient knowledge to understand what I was aiming to build, let alone willing to take on some machining work was a frustrating business. Interesting description of the transfercase conversion. I take it that you would have had to use the smaller diameter 2.35:1 low range gear set, and cut/reshape the left hand side wall of the casting to make room for for the slider gear? I'm guessing that with the modified high range gear fitted to the mainshaft and the 2.35 gearset that the actual low range ratio would have been about 2:1 ? Did you ever see how the LandRover factory workshops converted a series t/case to twin rear output when they helped with the building of the series 2 Sandmaster 6x6 ? I think there was a line drawing illustration of it in one of the Brooklands publications on series LandRovers. Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted August 3, 2013 Share Posted August 3, 2013 Bill, your link is working OK Rear suspensión setup Thanks O_teunico. The British War Dept who designed this bogie back in the 1920's after testing some early Renault designs, claimed that it gave superior traction to other multi linked systems.They described it as a "torque reaction bogie' To my knowledge the last vehicle to use this type of bogie were the Thornycroft Nubian 6x6 Airfield Crash Tenders. A detailed description of the " torque reaction" principal would be useful, but I have been unable to find anything on the net. Quote Link to comment Share on other sites More sharing options...
o_teunico Posted August 4, 2013 Author Share Posted August 4, 2013 Taken from the 1937 Manual of Driving and Maintenance for Mechanical Vehicles (Wheeled) published by UK Government. (Source:Wikipedia) Quote Link to comment Share on other sites More sharing options...
Mr Ian Posted August 4, 2013 Share Posted August 4, 2013 Hi Bill I sometimes think we were living in a parallel world, yes the case side was machined, only a small amount, to allow movement of the low range gear and yes it was the smaller low range gear. This was all about the time we were trying to make the first ;high ratio transfer case; for the six wheel drive I moved the input C/L instead of the cross pin approx., 0.25". No I didn't see the LR conversion as we soon moved on to the LR 90 six wheel drive. Regards and happy retirement. Ian Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted August 4, 2013 Share Posted August 4, 2013 Thank you Ian, and best regards. Thank you too O_Teunico for finding the maintenance drawing. I can't see any top links on the bogie. Seeing as the leaf spring trunnions were free to rotate around the axle tubes on bronze bushings, there must have been some sort of upper link rods to prevent the diffs from rolling around. I think the series 2 6x6 I earlier described as the SandMaster was in fact name Sand Trekker. Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted September 3, 2013 Share Posted September 3, 2013 I have too many other things on my plate these days, but I have just been given a transfercase off an old FJ40 landCruiser. If I were to resurrect a 6x6 project I would think these would make a better and lighter basis for a pinion mounted drop box than faffing about fabricating a steel drop box and using LandRover transfercase gears. The Toyota cases are already 1:1 ratio so can virtually be used as is once the low range components have been emptied out to lighten it down, as the low range bits are not required for the drop box. If Mr Ian is reading this, could you please tell me if reverse cut 4.75:1 ring and pinions are available for the earlier 4 spline pinion flange ? Cheers, Bill. Quote Link to comment Share on other sites More sharing options...
Mr Ian Posted September 3, 2013 Share Posted September 3, 2013 Hi Bill. No only available in 24 spline flange, sorry!! Iannb Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted September 3, 2013 Share Posted September 3, 2013 Hi Bill. No only available in 24 spline flange, sorry!! Iannb Thanks Ian. No problem. I still had a couple of modified series high range gears with 4 spline centres left over. Bill. Quote Link to comment Share on other sites More sharing options...
Jamie_grieve Posted September 4, 2013 Share Posted September 4, 2013 I can't see any top links on the bogie. Seeing as the leaf spring trunnions were free to rotate around the axle tubes on bronze bushings, there must have been some sort of upper link rods to prevent the diffs from rolling around. I saw that too, if you open the image in a new tab for a better look it's called: /Rear_wheel_bogie%2C_torque_reaction_arrangements_removed_%28Manual_of_Driving_and_Maintenance%29.jpg So they've removed whatever those elements for clarity. The only things I think I've seen with my own eyes with this arrangement are old Albion trucks. I never paid any attention to them but next time I'm in Biggar they have a museum there. Maybe there's something interesting about it there. They might have old factory drawings and test information there. Quote Link to comment Share on other sites More sharing options...
Jamie_grieve Posted September 4, 2013 Share Posted September 4, 2013 from: http://commons.wikimedia.org/wiki/File:Rear_wheel_bogie,_showing_torque_reaction_arrangements_(Manual_of_Driving_and_Maintenance).jpg Thank you Wikipedia. Looks like quite an interesting torque reaction setup with a centrally hinged rocker with some kind of trunion arrangement allowing for sideways movement for articulation. Quote Link to comment Share on other sites More sharing options...
o_teunico Posted September 4, 2013 Author Share Posted September 4, 2013 Toyota cases are already 1:1 ratio so can virtually be used as is It´s a pinion driven unit or is it chain type? Quote Link to comment Share on other sites More sharing options...
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