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Posted: Sat Jan 03, 2009 9:58 pm
by Sticky_Tape
Epoxy my friend the whole 1/2'' slip to 3/4'' thread if filled with epoxy the olny thing going into the chamber is a piece of coat hanger wire. The spark jumps to the chamber wall. This way I can adjust the size of the spark gap by un threading the 1/2'' slip by 3/4'' thread bending the coat hanger wire towards the chamber wall or away and threading it back together. EDIT: Thanks starman I waited pretty long to attempt a hybrid almost a year about 27 days until a year.
Posted: Sat Jan 03, 2009 10:00 pm
by Gippeto
How to you wire in your ignition without it shorting on the walls?
Epoxy perhaps?
Edit: Damn! I even refreshed the page to see if anyone had answered.
Posted: Sat Jan 03, 2009 10:08 pm
by Sticky_Tape
I'm uploading a video on youtube exsplaining it. Anybody know how to use a piezo to ignite a mixhigher than 4x? The spark gap I have now is really small (.75mm) but is doesn't seem to ignite.
Posted: Sun Jan 04, 2009 5:56 am
by jackssmirkingrevenge
Lol, did your mum not appreciate you shooting indoors
Well done on getting it to work
Posted: Sun Jan 04, 2009 11:33 am
by Sticky_Tape
She is hollering at me at the end of the video lol you noticed it was just a dryfire. I actually made a huge combustion out of 3'' pipe 5' tall and dry fired it in the house whoooooossh now they think I am going to blow up the house with everything even co2 cartridges lol... not doing that again, I don 't recommend that.[youtube][/youtube]
Posted: Sun Jan 04, 2009 12:36 pm
by Sticky_Tape
Well I got a shot off at 8X mix BIG MISTAKE too loud my dad got pissed and now I'm banned from propane oh well back to pneumatics.
EDIT: sorry for the double post I should know by now.
EDIT#2: can anybody tell me the pressure created in a 30ml chamber propane / air at 8X mix I need to know.
Posted: Sun Jan 04, 2009 2:05 pm
by jimmy101
Sticky_Tape wrote:EDIT#2: can anybody tell me the pressure created in a 30ml chamber propane / air at 8X mix I need to know.
GasEq says 76.3 ATM (1120 psi).
Of course, that'll only happen in an ideal chamber (no heat loss) and without any kind of barrel, ammo or burst disk.
Posted: Sun Jan 04, 2009 2:21 pm
by Sticky_Tape
DAYMN that's why it was so loud well I don't think I will be doing that again.
Posted: Sun Jan 04, 2009 3:03 pm
by ALIHISGREAT
Sticky_Tape wrote:Well I got a shot off at 8X mix BIG MISTAKE too loud my dad got pissed and now I'm banned from propane oh well back to pneumatics.
EDIT: sorry for the double post I should know by now.
EDIT#2: can anybody tell me the pressure created in a 30ml chamber propane / air at 8X mix I need to know.
LOL FOOL! just apologize to him and ensure him it will never happen again...
Posted: Sun Jan 04, 2009 3:34 pm
by jonnyboy
Sticky_Tape wrote:Well I got a shot off at 8X mix BIG MISTAKE too loud my dad got pissed and now I'm banned from propane oh well back to pneumatics.
EDIT: sorry for the double post I should know by now.
EDIT#2: can anybody tell me the pressure created in a 30ml chamber propane / air at 8X mix I need to know.
LOL how about mapp gas?:D
You've made me want to go make a tiny hybrid now.
Posted: Sun Jan 04, 2009 4:56 pm
by Sticky_Tape
They are great but olny use them at lower mixes unless you don't have parrents that think everything will blow up.
Posted: Tue Jan 06, 2009 12:24 am
by microman171
How do you fill the chamber with gas? Is is under pressure when you put the fuel in? Or do you meter in low pressure propane (with a rich mix) and then pressurise with air?
I got all I need to make one of these
. But I'm not sure about metering. I got butane, not propane. I was thinking trial and error (so no real mix number eg. 3.6X).
Anyway, I am going to try this for sure
Posted: Tue Jan 06, 2009 12:54 am
by starman
Sticky_Tape wrote:Well I got a shot off at 8X mix BIG MISTAKE too loud my dad got pissed and now I'm banned from propane oh well back to pneumatics.
EDIT: sorry for the double post I should know by now.
EDIT#2: can anybody tell me the pressure created in a 30ml chamber propane / air at 8X mix I need to know.
Oh man that really stinks. Maybe you should sit down with your dad and just go over what you are doing. Promise anything you need to...
Download HGDT and you will be able to get the data you are looking for.
Posted: Tue Jan 06, 2009 1:00 am
by jon_89
So how loud was the 8x mix? I think its time for me to one. I think I have all the parts. what are the dimensions?
Posted: Tue Jan 06, 2009 6:47 am
by Sticky_Tape
I don't think that would work starman I can't get it into his head that even a X1 mix with propane will not exsplode. After I fired that bid combustion gun in the house that was pretty stupid but relatively safe he said to me ''you don't even know what you are talking about those people on that site don't know anything about exsplosives! And you sure don't! That thing is going to blow up and put shards into you!'' even though he lets me use 400psi air which is a quite alot more powerful than X1 propane /air mix
