After thinking about it some more I've changed a few things:

  • All the internal UHMWPE support/structure is being replaced with 2"x1"x0.125" aluminium (6063 T3) channel. I'll be buying it from Aluminium Warehouse and they offer a cutting service which I'll use to get the lengths into ~500mm sections.
  • I'll make nut strip using 12mmx12mm aluminium bar with M6 threads and use that to connect the aluminium channel together.
  • The front and rear armour has been upgraded to 4mm-6mm Hardox however this will need to be machined by some one, any offers or suggestions?
  • The top and bottom armour/covers will also be upgraded to 5mm polycarbonate however I'm not too sure how to mount these.
  • The lifter will now be powered by 2 linear actuators from Gimson but the overall design & calculations are still in progress.
  • The wheels will be Banebots 2-7/8" Shure 50 tires with 3/4" hex mounting, I'll then use the 1/2" to 3/4" key way mount to affix these to the shafts. The gears will hopefully be attached to the wheels but I may get HPC to put a 1/2" key way mount on them too.


I've also kept some things the same:

  • Gimson Robotics GR02 24:1 18V motors
  • 22.2V 6S1P 5000mAh 30-75C liPo
  • Custom electronics
  • 20mm HDPE with 0.5mm tool steel covering for side armour, upgradeable to suit opponent
  • roughly 450mm by 400mm


The revised total weight is 8.3kg minus lifting arm and revised total cost is £414.06.

Here are the latest pictures,
Front isometric view:
Rear isometric view:
And the album: http://imgur.com/a/Cd12B