Team MedBots

[Max]

Tested the pneumatic system again- it went badly!
I had the system piped up and turned on the co2 from a paintball bottle, I had the nut on the regulator fully undone then I screwed it up, it was at 2 bar and I tried firing the ram but it didn't have enough power. So I turned the regulator nut a little bit more then the prv (10 bar) fired and all the co2 came out. On my pressure gauge it went further than it measures. The pvr was covered in frost and the bottle froze to the ground. There was a lot of pressure when the pvr went off.

Is my Trevor regulator Brocken?

[Max]

What kind of forces so fw hydraulic crushers like cobalt have at the tip? And what about electric crushers rather than just grabbers?
I'm after the force at the tip rather than the pressure
Thanks!

[psycho_fling]

in theory my crushers actuator produces 10000N pushing (electric) and with losses calculated it would be 7000N on the tip which equates to roughly 700kg on the tip

I think Kenny said that cobalts tip force was 2000kg, naturally hydraulics are going to produces far bigger numbers than electric but the downside is, the expensive parts needed etc

[Max]

Bit more progress on flipper;
And got Some pneumatics done:

[Max]

Hi all,
Looking but the event at Guildford I don't think my flipper was very effective, it more turned people over rather than throwing them up, does anyone who saw it know what might be wrong?

[psycho_fling]

the angle of the flipper arm looked quite high i would say reducing this will help so it makes robots run up it giving a better flip

[Anttazz]

What sort of size is the ram?

[Max]

I think it is a 63mm bore and 125mm stroke but it doesn't use all the stroke.
I had a horizontal plate at the bottom of the flipper to get under people but I see what you mean about the slope. But even when I put a brick right up on the flipper arm it didn't go very far.

[Anttazz]

Quite a bit bigger than Jr then.

I just watched the video of it and it didn't look too bad, its not going to get the same sort of force as a FP flipper is but if its getting people over at least then thats a good sign. I noticed Jr had trouble flipping robots unless it was just under them and they were near to the ground. I think theres a video of my trying to right Jamie's MDF bot at Edinburgh and because of the unusual shape it was when it was upside down it couldn't get at it properly.

So maybe its just the limitation of the system? If not, test the setting on the reg as at the highest for your system and similarly for the PRV.

[Max]

I'd just like to point out that I only had one drive motor working in that video and that's why the driving is terrible.