Team Psyclone: The Uprising (Of Build Diaries)

[Niels - Team K.a.L.M.]

nice find, I never saw any 42mm gearboxes appearing on ebay

[TeamPsyclone]

They look pretty good. I'll keep an eye on them.

Anyway, does anyone have any idea what the cheapest I can go on a decent-ish pneumatic or hydraulic system? I wish to keep it under budget, but I can have a ram for Xmas, I guess XD
All I need is a simple lifter system (although I can't buy quite yet) or a simple crusher, hence the pneumatics. I'm not quite sure on how to set up hydraulics, as in the pump side, so I'm very willing to set that aside until I get some pneumatics set up.

So, basically, what sort of sizes of parts (Bores etc) and what pressures are good for lifting and potentially crushing? I've heard of pneumatic crushers, I'm fairly certain. I just need sizes and what kind of prices I'm looking at. Apologies for the wall-o'-text.

[maddox10]

Pneumatic crushers. I think only the heavyweight Mitril comes close to being a real one. That uses a monster of a ram on full pressure. (140mm bore, 140mm stroke, 8.5 tons of force)
TAN has damaged other machines, but that was more a stroke of bad luck.

But in feathers, pneumatic crushers? I can't recall any succesfull one.

Hmm, a 100mm bore, 50mm stroke single acting ram... a tad heavy, but with 4 tons of force you could do some damage. No buffertank needed, speed will be fast enough to grab and splat.
Use a big servo to open and close the bottle as main valve, and another big servo to open a poppet valve to dump.
I don't think it's going to get any cheaper than that.

On hydraulics. You'll need big pockets for that.
The smallest, affordable gearpump I found was £85, that needs at least a Speed 900 or geared Astroflight to operate.
Maybe that a DeWalt can do the job -team Storm started on such a setup ages ago-

[TeamPsyclone]

Hmm, I may be able to up the budget to accommodate some safer parts, such as a proper reg and a somewhat decent 3/2 Solenoid. Is it useful to have a QEV on a crusher, or just a plain slower dump valve? I'd assume a plain dump valve wouldn't hurt. Also, is a 100mm bore the absolute minimum for a crusher? Or could I get away with around 50-ish (And above, 63 etc)?

Thanks for the help.

Edit: Oh, and what's the best way of shortening a ram? I may have found one with a good bore, but it's too long.

[TeamPsyclone]

Hmm, I've been thinking, and I've decided to stick with a plain old flipper/lifter/poppy thing. What'd be the best pressure to make something that can self right, and would a 63mm bore 300mm stroke cut it? I just need the ability to self right, but a bit better than an actuator. Unless I get a lifter/"Crusher" (More like grabber) combo, with a single linac. And two on the sides to self right (Since it has rather flat sides, and without pneumatics can't really move.)

[Niels - Team K.a.L.M.]

Perhaps this will suit your needs better:

http://www.ebay.nl/itm/Miller-Pneuma...item338cf37e5b

It might be low pressure and will require a slighty heavier setup (regulator for one) but will have enough power to flip and will leave a lot more playroom in your design.

Mario would be better suited to rate this item I guess, or anyone who ever build a flipper.

[TeamPsyclone]

I'd need one of that bore (I'd assume), but I'd probably need a longer stroke, slightly. I'll find something, I always do haha.
Thanks though, every little bit helps. Also, come up with a name for the bot. Mein Land. With the tag line, Wohin gest du? (If you can't tell, I'm a big fan of R+) Maybe I may name it Keine Lust. I guess I'll rethink my options.

[Niels - Team K.a.L.M.]

rammstein, Mein hertz brennt

A longer stroke would mean more energy can be transferred as the amount of movement increases, the amount of co2 used will also increase.

[TeamPsyclone]

Ah, I'm only saying because the robot is roughly 750-800mm from the bottom to the top of the flipper (Also the same height as the top of the robot. I've found one at 500mm stroke, how long, generally, are they with that kind of stroke? I don't really want to be putting chunks of material down to push a ram up, with how unstable that would be. I could use a shorter one, I suppose, if I angle the ram forwards a few degrees. Around 30 should do it, if my math is correct.

[Niels - Team K.a.L.M.]

I'm terribly sorry, I just realised you were aiming for a HW.

Forget the item I listed, I assumed you were looking into a feather.

[TeamPsyclone]

I should have mentioned, sorry, you weren't to know. Anyway, in case someone else wants this, as I'm going for shorter, here's a pretty big ram

[TeamPsyclone]

Anyway, I've been scouring eBay for a good ram, and can't find any that are cheap enough, or the right size in general. It's near impossible to find 100mm bore, and 63 is the next best option to buy reliably. Would that be okay for a lifter/crusher, or is a 100mm bore a minimum?

[maddox10]

For a HW flipper, you're looking at a 100mm bore 100mm stroke ram on FP.
Or any other combination of stroke and bore using 45 liters CO2 inside a fraction of a second.

The original Bigger Brother used a 50*200 ram.. Gravity3 went way beyond, and used a 100*180. And that's a benchmark.

[TeamPsyclone]

So, to get this straight, 50x200 is a good size, for something that would get things over, and self right? If so, that makes life so much cheaper and somewhat easier.

[Max]

Running at what pressure?