Pneumatic questions, sorry!

[Max]

Re: Pneumatic questions, sorry!

here is a quick (and not to scale) drawing of my bot
[attachment=0:39r7ibiy]hole drum spinner robot wwith removable lid info.jpg[/attachment:39r7ibiy]
i can't think how i can explain it any further basicly i just want to be able to bolt my aluminium lid onto my 20mm hdpe bot without having to tap a hole for the bolt as i think the thread would strip easily (thats why i want a course thread, to help prevent it ripping out) or would wear out over time with all the bolting and unbolting to do repairs or charge batteries

[Danjr1]

Re: Pneumatic questions, sorry!

i use wood screws and they work fine

[maddox10]

Re: Pneumatic questions, sorry!

For that kind of application, there is a very usable idea.

Picture follows later, I'll have to make a demo version.

[maddox10]

Re: Pneumatic questions, sorry!



Something I cooked up.

A piece of 20mm thick 40*50 HDPE, a 20mm hole in the approximate middle.

20mm long piece of 20mm diameter ali (straight from the rod) M6 thread in the middle.

The allen key bolt completes the picture.

(sorry for the floor, that's about 80 years old)

[blazerbotics]

Re: Pneumatic questions, sorry!

I just use self-tapers, can get them from anywhere. If the thread goes, just use the next size up screw.

[Max]

Re: Pneumatic questions, sorry!

I know the rules say that you must have an on/off valve on your main tank and a dump valve both reachable from out of the robot but would it be allowed to just have a ball valve connected to the tank which vents all gas downstream of itself?
And also could you have it so that the valve needs a flathead screwdriver to turn it on and off from outside the robot?

[maddox10]

Re: Pneumatic questions, sorry!

I know the rules say that you must have an on/off valve on your main tank and a dump valve both reachable from out of the robot but would it be allowed to just have a ball valve connected to the tank which vents all gas downstream of itself?

The on/off valve on the main tank, or the isolation valve if you use pin-valved main tanks, have the job to keep the weapon gas-less untill activation is called by the arena marchal or ringmaster.
The dump valve has to vent the complete system.

And also could you have it so that the valve needs a flathead screwdriver to turn it on and off from outside the robot?

Preferably no tools for activation or dump. And a flathead screwdriver is the last tool I would suggest for such application.
Allen key,Torx or socket wrench, yes. Philipshead or Pozidriv crosshead screwdriver, if nothing else is available. Flathead, no.

[Max]

Re: Pneumatic questions, sorry!

What would people recommend for a 6 bar regulator? And what would you recommend for a 6 bar high flow rate valve?
Thanks

[maddox10]

Re: Pneumatic questions, sorry!

Regulator, Trevor of course.

Valve, Woodies QEV setup with a small control valve is the cheapers, lightest you can do.

[Max]

Re: Pneumatic questions, sorry!

Has anyone started to make the Trevor regulator again?

[maddox10]

Re: Pneumatic questions, sorry!

Not as far as I know. And if so, expect a higher pricetag than the originals.

[Max]

Re: Pneumatic questions, sorry!

For low pressure buffer tanks do most people use paintball bottles? Also do you need anything to fill your paintball tank with co2 (I am going to use a 16oz one from justpaintball ) like hoses or adapters?

[maddox10]

Re: Pneumatic questions, sorry!

For LP, a paintball tank is overkill, to heavy for the job.

To fill a painball bottle, you need a filling station. Available at any reasonable paintball shop.

Hoses for FP. I prefered thermoplastic hoses 1/4bsp size . These are commonly used on forklifts for the moving hoses on the arm- for the extra moving of the forks.

but my latests setups don't use hoses, but collectors. Solid mountings , no hoses, and as least couplings as possible. Takes a lot more time and efford to get ok, but the advantages are size, weight and simplicity.
Metalbeaks setup is such one.

[Max]

Re: Pneumatic questions, sorry!

Sorry I meant do you need anything to fill up the bottle at an event?
And what do people use instead of a paintball bottle for a buffer tank?

[maddox10]

Re: Pneumatic questions, sorry!

At the German events the standard is paintball bottle. They have their own filling station.

For the Dutch events, that is covered.

I didn't see any filling station for paintball bottles at the RR events.

So, it's up to you to make sure you can refill your own bottle. It's also handy at home. You don't want to run to the paintball shop every time your bottle is empty. Easier to rent a bigger CO2 bottle and refill your own for testing purposes.

On low pressure buffertanks.
I have seen a lot of different things. But powder fire extinguishers are known low pressure buffers.