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Pat123's Hybrid Rifle

Built a hybrid cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Total votes : 11
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Pat123's Hybrid Rifle

Unread postAuthor: pat123 » Fri Mar 28, 2008 4:21 pm

Here it is finally after alot of problems. thanks to everyone who helped me.

Pat
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Unread postAuthor: STHORNE » Fri Mar 28, 2008 4:24 pm

very nice job. very nice job indeed.

some questions though:
why so much electrical tape?
and... source of ignition? stun gun i presume
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Unread postAuthor: SpudFarm » Fri Mar 28, 2008 4:53 pm

wow kinda reminds me of my hybrid :)
do you got any numbers? ;)
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Unread postAuthor: pizlo » Fri Mar 28, 2008 7:13 pm

The huge wad of tape is a nice addition.
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Unread postAuthor: bigbob12345 » Fri Mar 28, 2008 7:15 pm

Great job
some specs would be nice though
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Unread postAuthor: pat123 » Fri Mar 28, 2008 7:19 pm

why so much electrical tape?
and... source of ignition? stun gun i presume

It is actually black duct tape. it is the only thing i could find to attach the electric bbq lighter.

I haven't shot it yet. I will tomorrow. I'll post damage pics then.

the chamber is roughly 13" of 1.5" sch 40 steel
barrel 36" .5" sch40 steel

edit: changed chamber from 18 to 13"
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Last edited by pat123 on Fri Mar 28, 2008 7:37 pm, edited 1 time in total.
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Unread postAuthor: bigbob12345 » Fri Mar 28, 2008 7:23 pm

barrel could be a lot longer(atleast 72in).
I would also recommend a larger bore barrel with a chamber that size, A 1in barrel should work good with it.
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Unread postAuthor: pat123 » Fri Mar 28, 2008 7:33 pm

Ok thanks.
could you help me with my pressures to fill my meter and stuff. I tried several times and I am getting wierd numbers.
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Unread postAuthor: bigbob12345 » Fri Mar 28, 2008 7:40 pm

here is a link to the math required for finding the right pressure for hybrid meters
http://www.spudfiles.com/forums/hybrid- ... 13602.html
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Unread postAuthor: pat123 » Fri Mar 28, 2008 8:00 pm

so if my chamber volume is 23ci I would do this
23/.958-23
this would give me 1.008
I divide that by my meter volume which is .45ci
now I have 2.24 bar?
multipy that by 14.7
giving me 32.93psi
so for a 1x mix i fill my meter to 32.93?
for 2x i us 64 and so on?
how do I get to a 4x mix? propane tanks don't hold 131psi do they?
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Unread postAuthor: jon_89 » Fri Mar 28, 2008 11:31 pm

Looks pretty good. In your math I think you need to convert psi to bar or visa verca. I am not 100% positive though.
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Unread postAuthor: bigbob12345 » Fri Mar 28, 2008 11:36 pm

Pat:You just charge the propane meter to 64psi twice and you will get a 4x mix.
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Unread postAuthor: hi » Sat Mar 29, 2008 8:37 pm

its a little harsh on the eyes, but if it works it works!
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Unread postAuthor: pat123 » Sun Mar 30, 2008 2:04 pm

Pat:You just charge the propane meter to 64psi twice and you will get a 4x mix.

thanks I get it now that was a stupid question :oops:

its a little harsh on the eyes, but if it works it works!

Yeah I am trying to find a better way to attach the bbq lighter and some way to hide the wires. I might just cut them shorter but they have the tips to attach to the bbq lighter. HOw would you attach the propane tank other than zip ties?
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Unread postAuthor: SpudFarm » Wed Apr 23, 2008 3:38 pm

hybrid Rifle- finished, 1400 fps with a 5X mix based on hgdt.


pretty much doubt that.. my bigger hybrid with 80" barrel and 5x with a marble got 1075fps.
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