The air sprayer is a plastic handled pistol grip brand is Command air, the ratings are not mentioned.

Looks like Melbourne guy might get his QEV no other takers?

OK items are still available any takers?

Balga Perth Australia

Have some odds and ends that may be useful for someone see as I have little time for making anything with them, pm me for pickup or drop off close by.

40mm and 50mm pn18 1.5 - 2metre lengths

Bosch QEV 3/4

air sprayer handpiece

asso 30 spear pneumatic spear gun

Assorted brass, poly and pvc ...

So does a QEV require a maintenance dose of lubricant?

Next, what would one lubricate a QEV with?

And finally the little diaphragm/piston is that replaceable?

I was wondering if anyone has made a similar item before? would it work and would it be good?
Just a dodgy replica model I made up, to make a working model I would need a lathe and some tooling which I don't have...material would be pvc or copper sleeve for external "plumbing" purposes and and a ...

The "engineering landmark" idea is fine. The problem is, people will see it as a "How good is this cannon" system.

Perhaps this idea can be processed into something for the Spudwiki, a page of cannons that are good technical example of various traits, and articles that are worth the read.

In fact ...

I think the point has been missed! Basically so if I am researching the next evolution in Cannon design rather than have to search through a whole lot of average or unworkable designs, with a points based listing order I would hope to find what I needed quicker, while some threads of bad ideas and ...

In the showcase area I would like to see all forums listed by votes on a ranking system than the currently recency of last post listing.

ie 5. high pressure, efficient, new design technology
4. Too good to be 3 or almost 5 just needed forum discussion inputs
3. nothing new but nicely done
2 ...

Looking at a build that requires 2-3 swivel barrel unions between 1/2 to 3/4 threads operating at pressures 200psi max and I have a choice of deciding pvc, poly, brass, or stainless for this area of the device which is 18bar 260psi rated PVC barrel/chamber and the yet to be decided other area ...

I also noticed these are rated min operating pressure 50kpa and max 1mpa
when on mcmasters site they rate theirs as max 125kpa, is this a concern in any way?

They are a Queensland company should be cheap for you or maybe find out where they are!

Also curious why you didn't just order tried and proven products from the UK forum shop?

I am planning my next projects namely 1/4" and 3/4" barrel devices approx 3' and after experiencing the noise of a 2" barrel piston cannon prototype, I would like something much quieter.

I am thinking if I could mount a spring on the back of the piston that may help, am also trying to muffle the ...

10k North of Perth is where I be, just watch for low orbit tennis balls and you should be able to find me