SpudFiles

To me it seems like u loose too much propane in the way u fill it.

inaccurate syringe filling, and maybe u get some ventilation of the chamber everytime u open the cap.

just for fun, try to doubble the amound of propane. it will ignite on 8% too, anyways it cant be worse than what u have now .

if this helps, and u get a bang when u doubble up, u probably loose too much propane.
if so, i would suggest getting a bigger syringe that can take everything in one filling, and a airtight tube from the propane to the syringe.

What about a 1/4 hole threaded and use a bolt as a plug. What do yiu mean remove the orifice

What about a 1/4 hole threaded and use a bolt as a plug.

Yeah, I suppose you could do that too, as an interim solution. It would diminish usefulness in airsoft though, as it takes much longer to thread in a bolt than to close a ball valve. To that end, you should also install a fan immediately.

What do yiu mean remove the orifice

The orifice is the section of the torch head with the very small hole. Unscrew that section from the valve body - it's not doing you any good for filling syringes.

To that end, you should also install a fan immediately.

Yep, I'm dying to get one, But i have to check were i can get one for really cheap (I'm broke, only got a euro coin left from my trip to italy)

The orifice is the section of the torch head with the very small hole. Unscrew that section from the valve body - it's not doing you any good for filling syringes.

Ill go try that right now

actually... i think a euro is enough

natas wrote:actually... i think a euro is enough

they only take us money by me

2.30$
and free shipping

http://www.dealextreme.com/p/pc-chassis ... n-6cm-5198

natas wrote:2.30$
and free shipping

http://www.dealextreme.com/p/pc-chassis ... n-6cm-5198

Dimensions: 2.36 in x 2.36 in x 0.59 in

seems like alot to reduce a fan by, Ill go to microcenter and get a 40-50mm fan.

http://www.microcenter.com/single_produ ... id=0253152
That one exactly

http://www.dealextreme.com/p/pc-chipset ... n-5cm-5129

2$

natas wrote:http://www.dealextreme.com/p/pc-chipset ... n-5cm-5129

2$

Or I can get it instore and have my gf buy it for me

Another way to make an injection port is to just install a Schrader valve (fancy name for a car tire stem). If you have a needle for your syringe you permanently remove the stem from the tire valve. The syringe needle will fit through the stem-less valve (of course the "valve" is no longer a valve once the stem is removed). The plastic screw on cap for the stem is more than strong enough to contain the combustion pressures.

You can get a metal tire valve from a car tire shop for a buck or so.

Here is an example http://www.inpharmix.com/jps/Sluka_Spud-zooka.html
Another example, left end, upper part of the chamber, that's a chrome truck tire stem with metal cap that I inject fuel through using a syringe:

Or you can go totally ghetto. Drill a hole in the chamber just a hair bigger than the needle. Inject the fuel and cover the little hole with a piece of tape. Surprisingly, the tap will be just fine. (Just avoid putting a body part too close to the tape covered hole just in case. )


I suspect you have some problem in your math and that is messing up your fueling. The volume of a cylinder is pi*radius^2*length. Note that it is the radius, not the diameter, in the formula. Or just post the dimensions, internal diameter and length.

I actually have a schrader valve right here, was going to use in a pneumatic that never happened. I just have to find it on my desk.

I suspect you have some problem in your math and that is messing up your fueling. The volume of a cylinder is pi*radius^2*length. Note that it is the radius, not the diameter, in the formula. Or just post the dimensions, internal diameter and length.

From Jackssmirkingrevenge

First off , if you're using propane the correct percentage is 4.19%.

Chamber volume is 34.04 cubic inches, which gives us 557.8mL

If you started with metric it would have been 30.48cm x (4.83cm/2)2 x π, which is 557.8mL

I'm assuming your chamber is 1.9inch inner diameter, but we use the radius in the equation.

Correct propane volume to meter is therefore (4.19/100) x 557.8mL which gives us 23.4mL

Edit: Here it is

looks good, and for safety, remember to put it in where u have two layers of plastic
now u only need the fan i guess

natas wrote:looks good, and for safety, remember to put it in where u have two layers of plastic
now u only need the fan i guess

I know about the double layer. And I just got a 10$ prepaid visa card to buy a fan with

i predict some good explotions coming your way soon