Wedgehog trying to blend in to the scenery with its stripy tape, but failing miserably.
 
 

Wedgehog with no clothes on.  Here you can see the general layout of the guts.  The 60 mm diameter pneumatic piston can be seen in the center, connected through a linkage to the pick axe at the front.  The The drills are buried under the piston mounting board and air canister protector (black cylinder on the right).  The canisters we used where compressed propane air duster cans.  Normally at a pressure of about 7 bar, but if you do what we did (dunk them in boiling hot water for 5 minutes) you can get them up to 15 (although I DO NOT recommend you do this it is HIGHLY DANGEROUS and could cause the can to explode).  The Two squares at the front are mounts for castors.  The armor, mounted on a frame of dexian is hinged at the back to allow easy access to the insides. .
 
 
 
 
 
 

Here is the armor before being fixed to the chassis and being painted.  The front and sides are made from from an old 5 mm aluminum British Rail information sign (you can just see the end of the N  of informatioN poking out on the right hand side in blue).  The rear curved section is made from an old dexian shelf (1.5 mm steel)  which proved suprisingly effective in the competition against grinding disks and cutting wheels.  The armor was easily strong enough to stand on due to a couple of lengths of aluminium angle being pot riveted on to the inside (see the line of rivets along the curved section)
 
 
 
 
 
 
 
 

Another view of the guts.  A closer look at the piston and one of the drills that Bosch kindly donated to the project.
 
 
 
 
 
 
 
 
 
 
 
 
 

Here Wedgehog's pick axe is half extended.
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Here are the speed controllers finally all wired in and working after the massive struggle we had to get them going (read about the speed controller nightmare on the Design Page)
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Here's Wedgehog being driven by Hugo on its first ever big run.   This is in the warehouse that was eventually turned into the TV set.  You can see a maze drawn on the floor in chalk, which was later converted in to a game for the TV show.  Wedgehog managed to spread the chalk all over the floor before we were told to take it off by the floor manager.   The guy with the kid stuck to his leg I later found out is the designer and driver of Sergeant Bash, one of the massive house robots.  Don't know who the kid is though.