BattleBots UK competitors :)

[typhoon_driver]

Fair enough. It was a dirty trick but then again the bar was crap anyway, too big a bore in the middle from what I could see!

The not shaking hands thing was so childish.

[Daniel]

I found the rules posted on reddit and I have questions about one part

• Systems can use Nitrogen (N2) gas or compressed air. CO2 cannot be used.

So what was Chronic and Bulldog planning on using? Is this why they stayed in the reserves and didn't replace Beta?

What is the FRA thought on Nitrogen being safer than CO2? One guy posted that frozen CO2 stays in the system and continues to vent in the pits.
Or they might just be unhappy the CO2 is used in fire extinguishers and might ruin their flames.

[Ellis]

Chronic and Bulldog will have been designed to run Nitrogen. They were most likely left as reserves as the show had enough main entrants ready to go ahead as planned.

[Daniel]

Ok, thanks. Just thought they should have replaced a British robot with a British robot.
But the rules do seem to be more limiting then what you are used to.

• The maximum allowed stored pressure is 3000 psi. • The maximum allowed regulated system pressure is 400 psi. • There are no specific restrictions on the system design; however, the pneumatic system must use best practices and commercially available components that are rated for the operating pressures used. •

eg, 400 psi

[Mouldy]

We were hoping chronic would be the replacement too, but unfortunately it didn't work out that way.

The rules were open to discussion with the producers, Bulldog, Chronic and Bronco all run nitrogen... The English teams regulated down to under 60bar- as thats the maximum rating of their setups (with prior agreement from the EO,) and I'm sure Bronco was running closer to the full pressure limit as I know there system was rated to +3000psi

[grant_ploughbot]

The rules are different in BattleBots. In terms of the pressure and voltage rules aren't hard limits. With prior approval of listing your conponents, wiring/pneumatics setups you can get approval to run higher. That's what we do on Beta and Alan also did the same for Cronic.

[blazerbotics]

We had to switch to the Nitrogen setup for BB, that was one of the main reasons for building a new chassis rather than just altering the UK one as the bottle has to be huge. We were running at ~50bar/750psi so we could run the same pneumatic system. My understanding on not running CO2 was due to concerns over teams bottle warming before fights (which had happened in the past). Bronco said they were running a similar setup to us but, there's no way they were regulating down as far as we were, to get that power from what look like two 63mm bore rams, they had it cranked up!

[IceMaster]

[john_frizell]

Daniel said: I found the rules posted on reddit and I have questions about one part

Systems can use Nitrogen (N2) gas or compressed air. CO2 cannot be used.

I had a conversation with the head safety guy about this and in the end we had to agree to disagree. In my view 3000 psi nitrogen is far more dangerous than 750 psi CO2. They were concerned about warming of CO2 bottles to derive an unfair advantage but there are ways to avoid that without banning CO2. And it was possible to exceed the 3000 psi limit if you could convince safety that you had the expertise to do so. Bronco was running well over that, with full permission to do so.

[Ellis]

Bronco was running over 3000psi? That's crazy.