Let's Make Robots!

Mighty bot



Build a bot with the highest Power to weight ratio!

Two classes, PUSHERS and PULLERS


  1. maximum voltage of 18v
  2. wieght in grams/kilograms
  3. Efficiency = load pulled or pushed (g) / Mass of bot 
  4. must use a video to demonstrate capabilities


  1. Test area will be a 50cm x 1m rectangle, contestant drags or pushes object from the forward most portion of the object to the end of the testing area
  2. Mass moved will sit inside or on top of a box or towel, contestant must demonstrate that the container does not help the robot in any way to move the mass
  3. any box may be used if the contestant chooses to do so as the containers mass will be added to the mass of the object/weight being moved 
  4. the container carrying the mass must be pulled via rope and hook, or pushed by the robot itself
  5. the mass and the robot must be tested on a flat surface, preferably a linoleum floor or gym floor(urethane coated wood)



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Now is 150 how much we spend or how much new parts are worth? Lets say I wanted to "borrow" that nice 1150CCA 12v battery from my truck does that count against the 150? That could translate into well over 50HP especially for a meager 3ft.
spend, scrap parts and prebought parts dont count towards the total, but remember, its the strength to WEIGHT ratio thats being scored
yea, my entry is almost finished, its the sum V2, (lobotomize) I only hope to push 3 kilos though
Yea so if it is 900g then you are in first place with %555 efficiency
I think i meant it to be october 4th

It's a shame it doesn't count on water; I've got a video of my model tug Eric towing a fully laden ~2M tanker around a pond. By my guess, the volume of water in the tanker (it was basically flooded with water to give it some mass) was around 15x30x200cm = 90000cm3, which, at ~1gram per cm3 of water, puts it at ~90kg, with the boat weighing maybe 0.5kg.

Drat; just realised when this dates from. Followed a link to it, and thought it was still current; Sorry.