The Magnificent Banana

My Father and I are planning to build a robot: The Magnificent Banana:
Shape: See pic ( Pic on profile, sorry about quality, theyre awful)
Colour: Yellow with a black stripe
Speed: 20MPH
Weight: 100KG
Armour: ?
Drive: 2 LEM130s @ 36V
Power: ?
Locomotion: 2 Wheels near the rear of the robot
Ground clearance: 0MM at front, Varies at sides, 1MM at back
Turning circle: 0
Dimensions: ?
Weaponry: A large flipper powered by 2 120X180 Pneumatic rams @ 1000PSI
Srimech: The flipper
Opinions, help, a DVD of the RR 2006 UK championships

large flipper powered by 2 120X180 Pneumatic rams @ 1000PSI

I think the highest operating pressure you can get for co2 is 725psi pr 750psi

Boyles Law, :mrgreen:

Der Boyz

Fine 750 PSI, but what about nitrogen

Nitrogen is removed from the rules, only CO2, or compressed air on low pressure.

Also, a 120*180 ram is at least 12 kg, if a commercial available ram is used. And delivers on its own 1.5 times more power than a 100mm bore ram.
With 2 of these gasguzzlers, youre emptying a 2 kg CO2 bottle in 2 actions. And then the question of valves. Each one will need a 1 bsp or equivalent inlet valve (meaning 4 burkerts =2.5 kg at least).

Then the LEM130s. Youll need a boatload of batteries to provide the power, and then deal with it.

A nice vaporbot, unless you got acces to aboutish £50 000.

Ok 1 ram and NPC 2446s

New Pic on profile

Size: 120X80X25
weapon is powered by a 5KG Co2 tank
Armour 3MM Hardox

Ive just checked the Fra rules and the max operating pressure allowed for pneumatics is 1000PSI

Correct, but in reality you cant compress C02 past 750 psi as this is when it becomes a liquid. You can compress a liquid a small amount but there is no advantage to do this as it wont get you any more power.

The pressure of co2 in the main tank / cylinder is temperature dependant.
You may get 1000 psi on a hot day....and then only in the main tank ...extracting gas ... as in firing a ram ... has a cooling / freezing effect and will cause the pressure to drop dramatically.