New Guy, want ideas for a pnematic tennis ball mortar

[duane]

Blitz, and Gun Freak,

I've played with GGDT a good bit now, and what you've suggested seems absolutely correct at higher chamber pressures.

For lower chamber pressures (75 PSI) it seems like a high chamber volume, and a shorter barrel would work better.

I'll keep running the numbers though.

Thanks,

Duane

[duane]

Well, most of my parts arrived today, thanks to my friendly brown truck driver.

I'll try rounding up the other odds and ends, and try putting it together this week-end.

In the meantime, I'm still playing with GGDT.

Thanks,

Duane

[Blitz]

Woohoo. Pics!

[duane]

Blitz,

Pictures will come. Be patient. Old men don't move fast. 8)

Thanks,

Duane

[jackssmirkingrevenge]

thanks to my friendly brown truck driver

That sounds vaguely like a terrible euphemism

[Blitz]

My truck driver's brown too. But telling him that sounds racist.

[duane]

I love it when my friendly brown truck driver pulls up outside.

8)

Duane

[Blitz]

Heehee, I know the feeling.

[Gun Freak]

That's how I felt when I was waiting for my 2" piston valve parts from plumbing supply 8)

[Blitz]

That's how I felt when I was waiting for my 2" piston valve parts from plumbing supply 8)

Such a feeling of glee. Almost euphoric. Can definitely feed poor spending habits.

[Gun Freak]

I just love the idea of being able to see something online and have it magically materialize at my doorstep in a couple days

[Blitz]

You'd almost think it was materialized out of thin air just for you. But then, it shouldn't take so long to arrive then.

[Gun Freak]

I suppose, but teleportation can't be too far away in the future!

[duane]

Well, I've made a "little" progress. 8)

After playing with performance numbers from GGDT, my idea for a tennis ball mortar turned into a tennis ball cannon. Maybe next time.

Sorry about the crappy photo... I am not known for my photography skills.



I've still got to come up with a way to brace the muzzle end of the barrel to the chamber. It's way too long and floppy for my liking.

Duane

[Blitz]

You got a few options. You could cut out a bracket and then zip tie the barrel and chamber together, for example. Or a large hose clamp. Or something.