![Laughing :lol:](./images/smilies/icon_lol.png)
Anyway, I built a mini/small spud gun this week and as fuel I'm TRYING to use propane. I have had a lot of problems trying to get it to ignite... I dunno what I've done wrong. For metering the propane I use a 10 ML syringe which attaches to a hose which then is attached to the propane tank thingy. I'm using an Electric grill ignition to generate the spark ... I have 2 sparks (4 screws) and they are approx 1.5 mm long.
Something that I have noticed is that when I try blowing in the chamber after seeing that it does not work I unscrew the plug and I can smell all the propane coming out.. Do you think that the propane is rising towards the upper part of the chamber?
![Question :?:](./images/smilies/icon_question.png)
Some specs on my cannon
The total chamber length with the fittings is about 7.5 inches long the pipe that I used for the chamber was 5.5 Sch 80 600 pressure rated pipe
Also the chamber is 1 inch in diameter... I measured the volume of my cannon with a measuring cup and it took 160 ML of water and if I am not mistaken 4.2% is the desired propane ??? So I inject 3.8 ML of propane... I have tried from 3-6 ML with no success
Any help would be appreciated :sad1:
Thanks in advance
![Very Happy :D](./images/smilies/icon_e_biggrin.png)
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