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Alvis Stalwart 6x6 All Terrain Truck
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The Stalwart entered service with the British Army in 1966 as a general transport truck. The high mobility and amphibious capabilities were considered ideal for resupplying units in the field.
About this creation

This vehicle was not conceived as a trial truck as I feel these focus too heavily on rock crawling; the Stalwart is a high mobility vehicle designed to quickly cross the farm land and rivers of Europe rather than Utah. To this end, I wanted to avoid unrealistic transmissions (a motor on each axle for example) and for the finished model to have a reasonable turn of speed.

This model attempts to replicate the drive system of the Stalwart as closely as possible. The three wheels per side are connected together, with drive coming to each set of wheels from the single central differential. Just like the real thing, this obviously leads to a certain amount of transmission wind-up when turning; luckily the tyres used don't have that much grip. The differential can be easily bypassed by the addition of an extra cog.

I have deviated from following the original drive layout exactly in order to get the steering and suspension geometry correct to prevent the suspension compressing under power or steering inputs. To achieve this, both drive shafts to the front “axle” are routed underneath the steering mechanism.

The universal joints used are broken old type universal joints shortened to be the same length as the newer version – not standard, but they are only replicating a standard (and much more expensive) Lego part.

Currently this model uses two XL motors for propulsion, but only really requires one. The XL motor furthest from the cab is where the real engine would be located, the one nearest is where the gearbox would be. There is still some work to be done with the wiring as I need more parts to use both drive motors and steering at the same time. I'll try and get around to making a better video soon, showing the full capabilities.





















Comments

 I like it 
  May 24, 2012
Fantastic truck. great look and functions. Well done. :)
 I like it 
  January 19, 2011
Wow... This is truly amazing. I wish I could give it more than 5 stars, but I can't
 I like it 
  April 17, 2010
really nice! But how does the steering work?
 I like it 
  July 28, 2009
Very interesting, this will help me when I build a new 4x4 design
Lego Stalwart
Darcy Guerin Hanlon
  July 8, 2009
thanks for that im think of making my own after i make my 6X8 truck. ive figured out the suspension and steering for it.
Lego Stalwart
 I like it 
Darcy Guerin Hanlon
  July 8, 2009
what are the wheel dimensions?
 I made it 
  July 7, 2009
Quoting Matt Kill awesome! ...now build a Saracen, for me....you can come and look at my real one if you want to make some notes!.....
Thanks for you comment on youtube as well. I've looked into this a little further since my youtube reply, can't build a mechanically correct saracen, but I might try a saracen style body for the stolly once I have rebuilt the chassis - it could be a disaster though.
 I made it 
  July 7, 2009
Quoting Darcy Guerin Hanlon oh yeah this is my fav truck on MOC pages and were you get the wheels from
Thanks, look out for an updated version in the near future after I've ironed out a few issues. Wheels are from old technic sets of the 1980's/1990's - cheap on ebay as these wheels seem to have fallen out of favour due to the lack of grip and dated look.
Lego Stalwart
 I like it 
Darcy Guerin Hanlon
  July 6, 2009
oh yeah this is my fav truck on MOC pages and were you get the wheels from
 I like it 
  June 30, 2009
awesome! ...now build a Saracen, for me....you can come and look at my real one if you want to make some notes!.....
Lego Stalwart
 I like it 
Darcy Guerin Hanlon
  June 14, 2009
this looks awsome i do have a thing for all 4WD transmissions well any thing mechanical to do with cars
 I like it 
  June 14, 2009
Sweeet. I really like the steering, and AWD. Looks like it would be really fun to drive too. Excellent job!
 I made it 
  June 14, 2009
Quoting Ape Fight Really like it -very very old school Technic looking (1980's parts??) Great functionality, looks like such fun to drive : )
Thanks, there is a lot of old technic, but also quite a lot of the newer parts hidden behind to make it all possible - I think the wheels make it look older, but they are the nearest to the real thing in my opinion. When the body work wasn't clad, it had a much more modern appearance, I'll gradually update this model, to make it smoother, as and when I get the parts.
 I like it 
  June 13, 2009
Really like it -very very old school Technic looking (1980's parts??) Great functionality, looks like such fun to drive : )
 
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Added June 13, 2009
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