SpudFiles

Posted: **Sat Apr 16, 2011 11:47 am**

I know that there has to be a fill valve. I'm planning on making a piston hybrid.

Already gathering some materials

Posted: **Sat Apr 16, 2011 2:23 pm**

I figured you knew... just making sure 8)
Dimensions?

Posted: **Sat Apr 16, 2011 3:20 pm**

don't really know yet. Depends on the O-rings and drill bits I can find in school

as it looks now, 25 mm piston and chamber, I have to find a barrel source yet.
If I can find the right piping, it will be scaled up for more power

Posted: **Sat Apr 16, 2011 4:51 pm**

If I ever made a hybrid it would probably be a 1" bore max. That way the valve wouldn't have to be huge, and it wouldn't be as loud or huge or expensive.

Posted: **Sun Apr 17, 2011 2:16 am**

I'm thinking in the direction of a 1" bore shotgun. I think that design fits the accuracy and the power.

No need for a complete sniper rifle setup on a smoothbore, altough it looks cool.

Posted: **Sun Apr 17, 2011 4:45 pm**

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Posted: **Sun Apr 17, 2011 4:48 pm**

SpudBlaster15 wrote:Pfft, anything less than 1.5" bore is wasting your time.

Posted: **Sun Apr 17, 2011 5:28 pm**

SpudBlaster15 wrote:Pfft, anything less than 1.5" bore is wasting your time.

I'm not so sure. This has been worth my time.

Posted: **Sun Apr 17, 2011 9:03 pm**

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Posted: **Sun Apr 17, 2011 9:24 pm**

ITWOST
My piston's O-rings now seal 100%, Once I get my ignition worked out I will have a fully functional piston hybrid. Here's a nifty little part I decided to add (1079K13)

Posted: **Sun Apr 17, 2011 9:28 pm**

Never seen those little window things before, they are neat! That is definitely going to be cool. Looking forward to seeing it up and running! I'm sure the ignition would look awesome through that window... do you have a high speed camera? Also which one did you get, a high pressure glass?

Posted: **Sun Apr 17, 2011 11:46 pm**

Cool, but did you check the specs.. They are for tanks and resivours. They are not meant for hybrid pressures. Check this item..

BSPP male sights have a max. temp. of 194° F. Not rated for pressure.

NPT male sights have a max. pressure of 4 psi at 70° F. Temp. range is –20° to +210° F.

Nevermind.. I just found the one you mentioned. 1500 PSI..

Posted: **Mon Apr 18, 2011 8:11 pm**

Success! A first fully functional shot from my piston hybrid! It still has a small leak which makes fueling inaccurate, but that can be worked out tomorrow. The shot was successfully ignited using 1psi of propane and 24psi of propane. The piston was held shut with 45psi and had a 50psi pop-off valve.

Posted: **Tue Apr 19, 2011 7:01 pm**

Gratz! When can we see it??? Been waiting for quite a while

Posted: **Tue Apr 19, 2011 7:07 pm**

Its a finished project, it just needs some aesthetic tweaks to show case. I can "leak" a couple rough photos if anyone's really eager...

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