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need help and conseils thank you

Posted: Thu Jul 25, 2013 12:20 pm
by romelectrofr
Hello i am french and i have try to make an new spud gun this is my 4 th spud gum
but he don't shoot i have an flash electronic allumage fonctionnal
and an fonctionnal ventalation systeme butvi think
he don't shoot because the ventilator can't left
the propane enter in the combustion chamber and i want
try an direct gaz injection systeme i use gaz of
deodorant can you help me [img] thank you

Posted: Thu Jul 25, 2013 12:50 pm
by jackssmirkingrevenge
[youtube][/youtube]

Posted: Thu Jul 25, 2013 3:44 pm
by romelectrofr
thank you i will try

Posted: Sat Jul 27, 2013 6:29 am
by romelectrofr
My spud gun shoot but the combustion in the chamber is very
rare and i want injecte comburant on my chamber but i don't
Know how to with h2o2 35% or with pure oxygen bottle or with simple
bike pump inject exterioor air in chamber ?

Posted: Sat Jul 27, 2013 8:42 am
by jackssmirkingrevenge
Quelle est votre système d'allumage, peut-on le voir?

Posted: Sat Jul 27, 2013 11:50 am
by romelectrofr
J'utilise un simple allumage de flash d'appareil photo il fonctionne 10
fois sur 10 le probleme ne provient pas de l'allumage je pense

i use an flash allumage he is very good this is don't the problem

Posted: Sat Jul 27, 2013 12:19 pm
by jackssmirkingrevenge
how big is your spark gap?

Posted: Sat Jul 27, 2013 6:16 pm
by romelectrofr
Sorry i don' understand sorry for my english

Posted: Sat Jul 27, 2013 7:30 pm
by jackssmirkingrevenge
Quelle est la distance entre vos électrodes?

Posted: Sun Jul 28, 2013 5:14 pm
by romelectrofr
Environ 2mm

2mm

Posted: Sun Jul 28, 2013 9:55 pm
by jackssmirkingrevenge
Trop petit! Try 5mm and see if you get more reliable firing :)