UPHL-158CI (SB15's hybrid lives!)

Harness the power of precision mixtures of pressurized flammable vapor. Safety first! These are advanced potato guns - not for the beginner.
SpudBlaster15
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Tue Apr 06, 2010 11:21 am

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 7:40 pm, edited 10 times in total.
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deathbyDWV
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Tue Apr 06, 2010 12:35 pm

Looks good. That'd be so cool if you could fill it from an onboard hpa tank...
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Tue Apr 06, 2010 1:49 pm

Good job on redesigning SB!
It is now much cleaner and more thought through if I can say that.

Not really much to say about this gun since it has all been said a few years ago :P

Just wanted to leave a comment since I love the ever rising flow of hybrids on this forum.

Edit: when looking over the pictures again I realized that you have a handle at the ABS barrel. That might not be the best place to have your hand if it fails..
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Tue Apr 06, 2010 1:52 pm

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 7:40 pm, edited 1 time in total.
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mark.f
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Tue Apr 06, 2010 4:47 pm

Excellent work. Nice to see some larger bore hybrids not made of PVC show up. :)
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Tue Apr 06, 2010 7:29 pm

Looks great! I like it a lot. My only concern is, like someone mentioned, having your hand near the plastic barrel. I am afraid the barrel or plastic breech area could fail at 5x. That could cause some very serious damage to your hand by getting cut from the plastic. Could you put a sheetmetal shield by the top of the handle or something? Just a thought.
SpudBlaster15
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Tue Apr 06, 2010 9:25 pm

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 7:39 pm, edited 2 times in total.
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Moonbogg
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Wed Apr 07, 2010 2:34 am

Thats at least in a much better position. I would wear eye protection for sure. Any chance of a video?
SpudBlaster15
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Wed Apr 07, 2010 2:43 am

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 7:39 pm, edited 1 time in total.
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starman
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Wed Apr 07, 2010 3:11 am

Sweet, clean and simple hybrid SB. If you're going to shoot it rifle style, you might consider some padding of some sort at the butt...looks like those relatively small pipes might dig into your shoulder upon recoil more than you would like.

You could also twist that gage down where it's inside your plumbing/stock zone. It's vulnerable to get knocked off or generally abused from even normal handling in its present location. Yeah I know, that valve handle is inconveniently in the same location.

What are you planning for your 1.5" ammo? I assume your barrel isn't golf ball size.
SpudBlaster15
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Wed Apr 07, 2010 3:35 am

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 7:39 pm, edited 1 time in total.
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Wed Apr 07, 2010 5:10 pm

I love this gun, I think I may use it as a model for when (or if :roll: ) I ever build one. Simple and effective.
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Thu Apr 08, 2010 7:09 pm

Great hand held hybrid!
My only suggestions for improvement would be a different propane tank, like the long skinny ones, and some sort of body made of abs or wood.
I also have one question, what steps do you take to load it, i think it might be burst disk, open BV to chamber, pump pressure in, Close BV, Meter propane, inject gas, close BV, FIRE!
Am I right?
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Thu Apr 08, 2010 7:16 pm

So when you fill it with air and propane, then close the main ball valve, there is still mix inside the metering part right?
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SpudBlaster15
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Thu Apr 08, 2010 9:56 pm

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 7:44 pm, edited 1 time in total.
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