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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018   
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Just came across what looks like an interesting concept, at least as far as how it's connected together.
"Israeli company Plasan and its Greek partner ELVO presents the Hyrax, a light armored all-terrain vehicle fully developed by Plasan in cooperation with the OEM Mercedes-Benz." https://www.armyrecognition.com/defea_2021...hicle.html  Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Nir Kahn (@Nir_Kahn) Tweeted: The apparent trailer on this is not a trailer. It’s electrically powered and automatically steered and turns any 4x4 into a hybrid 6x6 with massive exportable power and payload. https://twitter.com/Nir_Kahn/status/1415285983482941440?s=20 Nir Kahn (@Nir_Kahn) Tweeted: @__Ranen__ It reads the front steering angle and calculates how much opposite lock to put on the rear depending also on speed. So very stable at speed and you can reverse it through a slalom course or park it with ease. Doesn’t behave like a trailer at all. It receives CANBUS data but doesn’t write any. And for older vehicles like Humvees we can easily add a couple of sensors. We’ve had these behind all sorts of vehicles. It bends vertically pretty freely, twists enough, but won’t jackknife at all. The axle steers instead. It is effectively a fixed 6x6, with 4WS, it doesn’t manoeuvre like a trailer at all. https://twitter.com/Nir_Kahn/status/1415291869039407107?s=20 Officially known as the ATeMM (All-Terrain electric Mission Module). Click image to enlarge "The ATeMM is a connected and synchronized controlled electrically powered platform, not a simple trailer, even if its top cover can carry a heavy payload. It can easily be connected to any pickup truck or tactical vehicle by a unique, patented « 3-point fast connection » that enables the vehicle and ATeMM to perform as a 6x6 synchronized vehicle, the electrically powered axle (200 hp electric motor) of the ATeMM being directional, which relieves the driver from having to master the usual difficulty of controlling the trajectory of its trailer when driving backward, for instance (no « jack-knife »); this makes the driving by an inexperienced driver easy. Harvesting energy from the wheels, the ATeMM can provide onboard vehicle power on the move for external systems and equipment. It is built with a 37-200 kWh rechargeable battery pack. 20 kW of power is regenerated when the vehicle is on the move but solar panels can also recharge the battery. Three modes can be programmed: charge, eco or power. The ATeMM increases the payload by 2,540 lbs, its operational flexibility and the traction of the 4x4 vehicle while maintaining its original maneuverability (synchronized driving, steering and braking). The electric motorization of the ATeMM enables the whole vehicle to drive silently. The module can be adapted to a wide range of roles, from medical evacuation to armed platform, exceeding by far simple cargo transport.c https://www.armyrecognition.com/defea_2021...odule.html |
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15th Jul 2021 5:09am |
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| markb110 Member Since: 22 May 2010 Location: Guildford Posts: 2642  
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Looks cool
Land Rover tested a powered trailer for the 101 but it would turn the vehicle over so they canned the idea. As this is a three link design and as they state therefore it cannot jack knife is a good start. Is the lead vehicle using three 50mm tow balls? I am guessing that the two outer work with a damper system to allow turning, but then would a non rotating tow ball restrict off road articulation, primarily V gullies? Hope they do an extreme test video. Good find that man  |
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15th Jul 2021 7:25am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17432 
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An interesting development, I wonder if it will catch on.
Both Rubery Owen and Scottorn trailers made powered trailers for the 101" AP in small (developmental) numbers, and although the popular story now is that they tended to flip the towing vehicle under certain circumstances (especially on turning if the towing vehicle lost traction and the trailer didn't) there is actually very little evidence to suggest that this was a widespread problem and it may even have been a one-off incident. It is more likely that the real reason that the trailers did not enter volume production was a combination of cost and a re-assessment of the MoD's requirement. Certainly a similar trailer to the Rubery Owen or Scottorn concepts could be made which would work very well if it used modern driveline and traction control technology. The images of the ATeMM are indeed interesting, especially the three-point connection to the front part. This layout together with the blurb suggests to me that there is no horizontal articulation between the front part of the outfit and the "trailer", and the trailer axle steers in a conventional but opposed manner to the front steering axle, making it in effect a rigid 6x6 with front and rear steer. There must however be some ability for the two parts to rotate along the central axis relative to each other, probably provided by the things that look like resilient mounts at the rear ends of the outer links. It will certainly be interesting to see some video of this thing in operation! Will it catch on? I doubt it, but stranger things have happened. Anyone remember the AWD "Multidrive" concept for artics of a few years ago? Apart from one agri feed truck I sometimes see running round Dorset, that (excellent and British) idea seems to have died a death. Last edited by blackwolf on 16th Jul 2021 8:14am. Edited 1 time in total |
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15th Jul 2021 9:10am |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018
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Struggling to find any video on it. Indeed, it's not clear who actually made it.
Edit: "ATeMM will be produced in Greece by the JV Elvo, using Plasan technology and IP and SK Group’s organisational expertise." https://euro-sd.com/2021/07/articles/exclusive/23407/atemm-power/ Last edited by Supacat on 16th Jul 2021 8:24am. Edited 1 time in total |
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15th Jul 2021 11:41am |
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| lohr500 Member Since: 14 Sep 2014 Location: Skipton Posts: 1317 
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They had one of the prototype 101FC's with a Rubery Owen powered trailer at the Museum of Military Transport in Beverley, North Yorks. Not sure where it ended up after the museum closed  It was especially interesting as it had the 3.0 litre straight 6 Rover engine fitted and an extended bonnet compared to the production 3.5 litre V8 versions. |
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15th Jul 2021 6:15pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17432
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Conversations with a friend who used to work for Boughton/Scottorn Trailers has reminded me that the army also for a while ran a Scottorn powered version of the 3/4-ton Sankey behind a modified standard 109" GS or FFR Land-Rover. This combination is listed and illustrated as "Truck/trailer No 18" in Geary's book "The Fighting Rovers".
The larger Scottorn "Bushmaster" powered trailer, developed for the 101" AP FC was also produced with both GS cargo and (water or fuel?) tank bodied version. The tank-bodied version is also illustrated in Geary. |
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15th Jul 2021 7:50pm |
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| 22900013A Member Since: 23 Dec 2010 Location: Oxfordshire Posts: 3150 
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Land Rover were playing around with powered trailers prior to the 101 coming along, there was one being tested behind a 109" 1 Ton prototype in around 1967.
North eastern electricity board ran a few so they did have some kind of production. 2011 110 USW 1973 Series III 1-Ton 1972 Series III 1-Ton Cherrypicker 1969 IIA 1-Ton 1966 IIA 88" |
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16th Jul 2021 4:50am |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018
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A little more explanation and video starts at about 5:10 in this video:
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19th Jul 2021 5:19am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17432
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It is interesting to see it in use, and my assessment was clearly right. It occurs to me that legally it probably isn't a trailer (since it doesn't articulate) so you could probably tow another one behind it. Tail-swing could be a problem in tight spaces.
I wonder how soon we will see firms producing armour kits and bespoke military conversions of the Grenadier. |
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19th Jul 2021 7:38am |
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| markb110 Member Since: 22 May 2010 Location: Guildford Posts: 2642
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It can steer……
I can turn my 90 into a 90+ when I need the extra length (giggerdy), then back to a 90 for day to day driving. Which kidney would they like for it….. |
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19th Jul 2021 4:43pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17432
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Both, probably,
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19th Jul 2021 5:29pm |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018
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On a similar theme:
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25th Jul 2021 3:50pm |
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