Piston Valve Golf Ball Hybrid (LRCH-200)

Harness the power of precision mixtures of pressurized flammable vapor. Safety first! These are advanced potato guns - not for the beginner.
User avatar
Binder17
Specialist
Specialist
Posts: 105
Joined: Sat Dec 23, 2006 3:40 pm
Location: The Colony, TX
Contact:

Sat Jan 14, 2017 3:59 pm

Have finally gotten it to a point where I am ready to showcase it. Steel chamber with aluminum barrel. Cam lock breech loading system. Piston made out of all thread, 2 caster wheels, o rings, and a piece of a dog toy. Shoots up to 9X mixtures at the moment. Enjoy.

Attachments
2017-01-14 14.58.34.jpg
</script></font><p><font>&copy;2006 Google</font></p></center></body></html>
User avatar
mark.f
Sergeant Major 3
Sergeant Major 3
Eritrea
Posts: 3570
Joined: Sat May 06, 2006 11:18 am
Location: The Big Steezy
Has thanked: 15 times
Been thanked: 10 times
Contact:

Donating Members

Wed Jan 25, 2017 5:20 pm

Looks great man! I'll get around to seeing it someday.
User avatar
auxiliary
Specialist
Specialist
Posts: 145
Joined: Sun Jan 20, 2008 12:01 pm

Mon Mar 13, 2017 9:13 pm

That looks mad powerful! What kind of velocity did you record on the chrono in your video with a golf ball?
User avatar
Binder17
Specialist
Specialist
Posts: 105
Joined: Sat Dec 23, 2006 3:40 pm
Location: The Colony, TX
Contact:

Wed Aug 16, 2017 1:58 pm

auxiliary wrote:That looks mad powerful! What kind of velocity did you record on the chrono in your video with a golf ball?
Thank you! You will really like what I have next. Unfortunately we were unable to get a clean reading. We suspect that the "whoosh" from the muzzle interfered. We will try again over Labor Day.
</script></font><p><font>&copy;2006 Google</font></p></center></body></html>
User avatar
Binder17
Specialist
Specialist
Posts: 105
Joined: Sat Dec 23, 2006 3:40 pm
Location: The Colony, TX
Contact:

Wed Aug 16, 2017 2:04 pm

Update: Year 3 of the LRCH Project

So I haven't done much since the last round of testing I did back in December 2016. Now, I am preparing for a 3rd round of testing over labor day weekend in a few weeks. Here is a list of updates implemented.

-Piston ReDesign
-Spark Plug moved to center chamber

Regarding the piston, the 5/16 threaded rod started to bend at higher mixes from the force. So I am rebuilding the piston with a 3/8 Rod. I am also building a second piston with the cylinders being 3D printed. This will create a 50% lighter piston. So I am very curious to see if the material will hold up. I will post a picture of the completed pistons when they are done. For now, here is one of the cylinders.
Attachments
3dprintedLP-5.jpg
</script></font><p><font>&copy;2006 Google</font></p></center></body></html>
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 25836
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 157 times
Been thanked: 94 times

Donating Members

Thu Aug 17, 2017 5:18 am

This will create a 50% lighter piston. So I am very curious to see if the material will hold up.
What material are you printing with? I don't think ABS is quite up to the job.
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Binder17
Specialist
Specialist
Posts: 105
Joined: Sat Dec 23, 2006 3:40 pm
Location: The Colony, TX
Contact:

Fri Aug 18, 2017 9:33 pm

jackssmirkingrevenge wrote:
What material are you printing with? I don't think ABS is quite up to the job.
I will be testing an ABS one and a PLA one.
Last edited by jrrdw on Sun Aug 20, 2017 6:52 am, edited 1 time in total.
Reason: Fixed quote tag.
</script></font><p><font>&copy;2006 Google</font></p></center></body></html>
User avatar
Binder17
Specialist
Specialist
Posts: 105
Joined: Sat Dec 23, 2006 3:40 pm
Location: The Colony, TX
Contact:

Thu Dec 21, 2017 11:41 pm

New video of the final round of testing. Both my castor wheel piston and 3D printed piston held up well. Was able to achieve Mach 1.2 (fps reading not in the video). I think I am calling this one closed and moving on to the next project.

https://www.youtube.com/edit?video_id=m ... rrer=watch
</script></font><p><font>&copy;2006 Google</font></p></center></body></html>
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 25836
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 157 times
Been thanked: 94 times

Donating Members

Fri Dec 22, 2017 8:10 am

[youtube][/youtube]

Excellent, love the gratuitous 'MURICA intro :D
I think I am calling this one closed and moving on to the next project.
I concur, looking forward to what you come up with next.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Air2theBrain
Specialist 2
Specialist 2
Posts: 222
Joined: Wed Apr 12, 2017 5:30 am

Sat Dec 23, 2017 5:11 pm

My goodness now this is a cannon...great video well done! :P
User avatar
Spudinator
Private 4
Private 4
Posts: 80
Joined: Sun Feb 13, 2005 4:50 pm
Location: WA

Donating Members

Fri Jan 19, 2018 5:59 pm

Mmmmmm, brings me back to the good ol' glory days. Well built and good job.
"This is so fun it should be illegal... Oh wait..."
Post Reply