How much ? First I'd like to thank the people who helped make RaizerBlade happen.
Kart Sport of Caxton very generously gave us several sets of wheels and tyres that were surplus to requirements. Originally the robot was going to have six wheels but weight and complexity got the better of us, so it went down to two.

My thanks go to Roland Kirk (second from right) the manager for his help.

Visit the Kart Sport website at

A big thankyou also goes to Marshall Aerospace who provided us with off-cuts of aluminium tubing and sheet which we used to build some of the chassis and body panels. Without their help we would never have been able to keep the robot light enough to add the chainsaw.

Visit their web site at

Cycle King on Mill Road in Cambridge very generously provided us with an number of front and rear sprockets from racing cycles and as much chain as we needed to build the drive train. This allowed us to test several different gear combinations to find the optimum speed/torque ratio. Although Steve thought bicycle chain wouldn't be strong enough, we were unable to break it with any of the tests we put the robot through.

I'd also like to thank the people who gave me cash towards the purchase of some of the parts, especially my father who enjoyed last years event so much, he paid for the Bosch motors for this year. Cheers Dad !

OK so here's what it cost.

  • 4QD Speed Controllers + Interfaces
  • Radio Equipment (including fail safes)
  • Servos x 4 (from my Planes)
  • Hydraulic pump
  • 750 W 24V Bosch Motors
  • New Smaller Batteries
  • Paint
  • Spare Crystals for Radio
  • Chainsaw
  • Wheels and Tyres
  • Metal for Chassis and Body
  • Motor to open valve for hydraulics
  • Old bottle jack - to lift blade
  • Total

A few bits were free and we reused some from last years robot KillDozer.