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Posted: Thu Oct 15, 2009 4:55 pm
by Brian the brain
Depends on what you're trying to do. I've got a 1.5" QEV on my golf ball gun.... I wish it was bigger.


But not the ( UK) piston type.
I don't need to explain to you what kind of a snake a "Floa Constrictor" is right??

Posted: Thu Oct 15, 2009 5:17 pm
by Moonbogg
Brian the brain wrote:
Depends on what you're trying to do. I've got a 1.5" QEV on my golf ball gun.... I wish it was bigger.


But not the ( UK) piston type.
I don't need to explain to you what kind of a snake a "Floa Constrictor" is right??
I lost a cat to one of those. They are dangerous.

Posted: Thu Oct 15, 2009 5:51 pm
by Sam@UoN
Image

Like this? :shock:

Posted: Sat Oct 17, 2009 12:05 am
by Technician1002
Any updates on a production design?

Posted: Sat Oct 17, 2009 5:44 am
by Sam@UoN
I should have the pro/e models done either tonight or tommorow - i've found a 2" high pressure PVC TEE that should do nicely and some 2" - 1.5" reducing bushes so that would leave a cavity where the 1.5" piston seals...

Anyway I will post when they are ready - right now I'm being forced into bloody food shopping with the mrs!

Thanks for all your help thus far fellas

Posted: Sun Oct 18, 2009 5:12 am
by Sam@UoN
Will do a better job when i have more time tonight but here is a quick screen grab...

Posted: Tue Oct 20, 2009 4:19 am
by Sam@UoN
here is a link to a part of a video that ive made



let me know if anyone can see anywhere for refinement

I should also say that whilst they are not modelled the is an extension spring between the bolt and pison and an end cap on the left with a damper screwed into it...

Posted: Tue Oct 20, 2009 4:29 am
by Technician1002
Very nice. I like the animation. My only concern is the peak forces where you decelerate the piston. Do you have plans to absorb the kinetic energy of the piston in a safe manor?

Posted: Tue Oct 20, 2009 9:58 am
by Sam@UoN
Yeah a 60J spring damper assy - will work a treat