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How-To: Mod a Blowgun

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Unread postAuthor: MrCrowley » Sun Sep 13, 2009 11:56 pm

Oh I was under the impression they would be fuel valves only and you'd still have a ball valve after the fuel meter to vent in to the chamber. I have 3 ball valves on my hybrid, one for MAPP, air and then chamber.
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Unread postAuthor: THUNDERLORD » Mon Sep 14, 2009 12:09 am

MrC. wrote:Oh I was under the impression they would be fuel valves only and you'd still have a ball valve after the fuel meter to vent in to the chamber. I have 3 ball valves on my hybrid, one for MAPP, air and then chamber.


I was thinking a metering fuel pipe connected directly to the propane or mapp torch nozzle (pin-hole intact),no valve.
Venting in would be blow nozzle with a check valve.
The pressurized air entering through a (edit:different) blow nozzle with check valve,
Pressure switch in chamber connected to spark.
(It's for a mini,pistol sized, been daydreaming about since I saw a cool little brass chamber)...It would probably fuel too slowly though(?)

inonickname wrote:...If the pressure from the outside gets to high the valve will open, which is why they can't be used in this application.

By flowing through a check-valve (one-directional), as soon as the pressure increases it is closed and sealed off,
So it should have less pressure on the blow nozzle valve than the ball valve anyway.
Now I probably have gone off-topic and it's a late night thought... 8)
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