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Compact Homemade

Very interesting concept

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#26 Draconis

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Posted 13 April 2009 - 06:49 PM

Ahh, easy fix, guys... Y'all are assuming that frame of the blaster and everything is attached to the back of the pump. Instead, have the outside section be mobile, and the inside stationary. That way, you can have a tube that breeches the side of the tank and the side of the low pressure section of the piston valve, then just vent the tube with a simple trigger valve.
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[15:51] <+Rhadamanthys> titties
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[15:51] <@Draconis> Titties.
[15:52] <+Noodle> why is this so hard?

#27 Zorns Lemma

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Posted 13 April 2009 - 07:00 PM

Ahh, easy fix, guys... Y'all are assuming that frame of the blaster and everything is attached to the back of the pump. Instead, have the outside section be mobile, and the inside stationary. That way, you can have a tube that breeches the side of the tank and the side of the low pressure section of the piston valve, then just vent the tube with a simple trigger valve.


Having the inside move relative to the outside, and having the outside move relative to the inside, amount to exactly the same thing. As far as I can tell, my design is both 1) the simplest and 2) the most likely to work. If someone wants to tell my otherwise, feel free. Also, until Ice9 and I get our homemade backpressure tank working, there's really not much point for me to post here further.
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#28 Draconis

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Posted 13 April 2009 - 07:17 PM

Ahh, easy fix, guys... Y'all are assuming that frame of the blaster and everything is attached to the back of the pump. Instead, have the outside section be mobile, and the inside stationary. That way, you can have a tube that breeches the side of the tank and the side of the low pressure section of the piston valve, then just vent the tube with a simple trigger valve.


Having the inside move relative to the outside, and having the outside move relative to the inside, amount to exactly the same thing.


No, they don't. It completely changes how the valves operate, how complex the entire system actually needs to be, and how the triggers can operate. I suppose that regardless, you will need a check valve in the pump housing, or you will get one pump and no more pressure. Other than that, having the vent trigger to the front eliminates the problem of having to evacuate the space inside the pump cavity.
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[15:51] <+Noodle> titties
[15:51] <+Rhadamanthys> titties
[15:51] <+jakejagan> titties
[15:51] <+Lucian> boobs
[15:51] <+Gears> titties
[15:51] <@Draconis> Titties.
[15:52] <+Noodle> why is this so hard?

#29 wingd man

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Posted 13 April 2009 - 07:22 PM

Ahh, easy fix, guys... Y'all are assuming that frame of the blaster and everything is attached to the back of the pump. Instead, have the outside section be mobile, and the inside stationary. That way, you can have a tube that breeches the side of the tank and the side of the low pressure section of the piston valve, then just vent the tube with a simple trigger valve.


Having the inside move relative to the outside, and having the outside move relative to the inside, amount to exactly the same thing.


No, they don't. It completely changes how the valves operate, how complex the entire system actually needs to be, and how the triggers can operate. I suppose that regardless, you will need a check valve in the pump housing, or you will get one pump and no more pressure. Other than that, having the vent trigger to the front eliminates the problem of having to evacuate the space inside the pump cavity.

Diagrams please?
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#30 TantumBull

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Posted 13 April 2009 - 07:27 PM

I agree, we need diagrams. How are the two things different? Its like when using a BBB pushing the rear handle forward and back or pulling the front handle backwards and back. They're the same thing.
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#31 Quilan Fett

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Posted 13 April 2009 - 10:13 PM

How about this:
Hornet tank as the pump shaft.
Pin on the back of the tank.
Hornet valve glued in the back of the pump with a hose that goes out the side.
When you want to fire, the pin pushes the valve open which equalizes the pressure in the pump with the outside pressure, allowing the hornet tank to fire.
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QUOTE(pokemaster @ Mar 3 2009, 04:18 PM) View Post

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#32 Darth Freyr

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Posted 14 April 2009 - 02:00 PM

How about something like this.
Posted Image
Instead of using a back-pressure system, just use a traditional tank and valve. I believe someone made a homemade tank, you could just us a longer pin. Pump back and forth to prime and pull all the way forward to fire.

Edited by Darth Freyr, 14 April 2009 - 02:02 PM.

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