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Posted: Sun Jan 18, 2009 2:09 pm
by starman
Don't give up and close that 3 mm gap down further to 1 mm or less if you can.

Posted: Sun Jan 18, 2009 3:25 pm
by Ragnarok
Manometric metering shouldn't be all that hard. If you're adding everything to the right extents, the problem is, like starman suggests, almost certainly with the ignition.
ALIHISGREAT wrote:yes but then your air filling set-up will be venerable to the blast....
Just to let you know, venerable (old/wizened, and by it somewhat impressive) and vulnerable (at risk or harm or damage) are rather different in meaning.

Posted: Sun Jan 18, 2009 4:01 pm
by ALIHISGREAT
oops stupid google chrome spell check :roll:

Posted: Sun Jan 18, 2009 4:22 pm
by STHORNE
looks pretty good for your first, keep up the good work!

damage pics soon i hope? :lol:

Posted: Sun Jan 18, 2009 4:25 pm
by Hotwired
One step at a time. It needs to fire first :)

Posted: Sun Jan 18, 2009 5:18 pm
by maggotman
what else can i use as an ignition source ? will a camra work and how do you wire it up etc ?

Posted: Sun Jan 18, 2009 11:37 pm
by CasinoVanart
Your spark should be fine using what you are using. All my Hybrids fire with a BBQ ignitor up to 9x, with around a 1mm gap.

Get a syringe and some Butane, load the fuel directly through the ball valve from the syringe. Has worked for me every time.

Good luck.

Posted: Mon Jan 19, 2009 6:14 am
by psycix
3 mm gap?
3x9 = 27 mm
Thats over an inch. Can your spark jump that on atmospheric pressure?
You certainly need to close the gap to less then one mm.


And for gods sake, NEVER, EVER look down the barrel of a loaded gun, even when its "just" 200 psi and a burst disk. If the disk failed and its shrapnel gets blown in yer face, well, you'll have a bad day.