Schrader Valve as dump valve?

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Tempest
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Sun Feb 11, 2018 4:09 am

Hi everyone. This is my first project and I'm wondering if my design is feasible.

I plan to attach a schrader valve (bicycle tyre type) to a hpa tank .The idea is, when a striker pin touches the schrader valve momentarily, it will trigger a sudden burst of air and fire the gun..

The striker pin is activated by way of a rod from manually- cocked nerf gun.

I'm open to ideas as long as it is not too complicated. Thanks
:mrgreen:

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farcticox1
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Sun Feb 11, 2018 5:31 pm

Yes, Leslie Proper uses schrader valves

[youtube][/youtube]
Tempest
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Sun Feb 11, 2018 10:24 pm

Interesting build by Leslie. I'm wondering why people who steer away from this using schrader as dump valve? Is it inefficient?
Tempest
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Tue Feb 13, 2018 1:56 am

I'm also wondering if there are ready made solution that i could purchase for a valve that screws in the top of HPA tank..
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jackssmirkingrevenge
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Thu Feb 15, 2018 7:17 am

Welcome to the forum!
Tempest wrote:I'm wondering why people who steer away from this using schrader as dump valve? Is it inefficient?
Extremely poor flow, more or less equivalent to a 1.75mm / 0.07" diameter hole, meaning it is only suitable for very small calibers and high pressure if you require reasonable performance.

I had tried one as a valve for a repeater, turned into a high pitch farting machine:

[youtube][/youtube]
hectmarr wrote:You have to make many weapons, because this field is long and short life
Tempest
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Thu Feb 15, 2018 10:16 am

Welcome to the forum!
>> Thanks. Been a lurker for a while. Wonderful people and ideas in here
I had tried one as a valve for a repeater, turned into a high pitch farting machine:
>> Didn't expect this..but sure is funny. :shock: You've certainly save me time and headache with this one.

I've come across two other possible :
the screw on tank valve:

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or the explosive air release valve on instructables:
http://www.instructables.com/id/Airgun- ... ase-Valve/
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any advise on which one works best is much appreciated :mrgreen:
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