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| NatoHub |
 Posted: 06/10/2008 11:52 AM Post subject: Quick Question (Fuels) |
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Private
Joined: 14 May 2007
Posts: 21
69.29 Spud Bux
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I recently bought some starting fluid for my combustion cannon (basic cannon). It is highly flammable, but for some reason my cannon will not fire with it. I spray it in, put on the cap, and try to light it, but it rarely fires. I figured it would work better than hair spray (hair spray works well, but starting fluid is cleaner). What am I doing wrong? Is there a method?
Quote from can: "Contains diethyl ether and petroleum hydrocarbons." |
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| MaxuS the 2nd |
| Posted: 06/10/2008 11:57 AM Post subject: |
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Colonel
Joined: 19 Jan 2008
Posts: 617
779.45 Spud Bux
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Sounds like your fuel:air ratio is way off.
You're either putting too much or too little into the chamber, experiment with it. When you spray it, is it a fine mist? |
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| NatoHub |
| Posted: 06/10/2008 12:02 PM Post subject: |
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Private
Joined: 14 May 2007
Posts: 21
69.29 Spud Bux
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I've tried spraying different amounts in, but somehow it's not working.
It's a pretty fine mist. I'm honestly confused, hair spray works... |
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| starman |
| Posted: 06/10/2008 12:02 PM Post subject: |
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Big Daddio
Joined: 12 Dec 2007
Posts: 1366
2535.39 Spud Bux
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| MaxuS the 2nd wrote: | Sounds like your fuel:air ratio is way off.
You're either putting too much or too little into the chamber, experiment with it. When you spray it, is it a fine mist? |
Yes, what max said!....probably using too much....be sure you air out your chamber between attempts. |
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| NatoHub |
| Posted: 06/10/2008 12:04 PM Post subject: |
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Private
Joined: 14 May 2007
Posts: 21
69.29 Spud Bux
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| I've tried using just quick sprays, and I have been airing it out. I'll try using a small amount later. I know I'm not using too little, that's for sure. |
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| NatoHub |
| Posted: 06/10/2008 12:13 PM Post subject: |
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Private
Joined: 14 May 2007
Posts: 21
69.29 Spud Bux
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Ok, I just did a quick test.
For some reason, I spray in a small amount, put on the cap, ignite, nothing happens. But then when I take off the cap and try to ignite it, it ignites.
??? |
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| frankrede |
| Posted: 06/10/2008 12:19 PM Post subject: |
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Sangheili
Joined: 20 Jul 2006
Posts: 2919
450.42 Spud Bux
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| That means you are spraying too much, try a 1/4 second tap of spray |
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| psycix |
| Posted: 06/10/2008 15:44 PM Post subject: |
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Major General
Joined: 25 Jun 2007
Posts: 1591
86.93 Spud Bux
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| A rule of thumb: When your cannon doesnt fire, and your spark gap works, youve got too much fuel, not too less. |
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| nibbler125 |
| Posted: 06/14/2008 22:36 PM Post subject: |
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Private
Joined: 07 Jun 2008
Posts: 9
14.01 Spud Bux
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| i dont know why but it wont light for me nither i guess it just dosent work |
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| Carlman |
| Posted: 06/14/2008 23:01 PM Post subject: |
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The Aussie
Joined: 24 Nov 2007
Posts: 1111
293.38 Spud Bux
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| nibbler125 wrote: | | i dont know why but it wont light for me nither i guess it just dosent work |
no your both just not doing it right.
other people have used it in he past to great success
i even lighted my mini with primer lol |
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| TheTrooper |
| Posted: 06/14/2008 23:05 PM Post subject: |
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Master Sergeant
Joined: 04 Nov 2007
Posts: 164
19.83 Spud Bux
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| Quote: | | i even lighted my mini with primer lol |
Theres always stories like that where people just finished a combustion cannon, so when they go to dry fire it the newly applied glue, is still giving off flammable fumes, ignites and usually singes their eybrows. |
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| NatoHub |
| Posted: 06/15/2008 19:23 PM Post subject: |
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Private
Joined: 14 May 2007
Posts: 21
69.29 Spud Bux
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| Quote: | no your both just not doing it right.
other people have used it in he past to great success |
Yeah...Which is why I'm confused. I've tried everything.
Oh well, hair spray might be worse for the cannon, but at least it works. |
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| Carlman |
| Posted: 06/15/2008 19:56 PM Post subject: |
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The Aussie
Joined: 24 Nov 2007
Posts: 1111
293.38 Spud Bux
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| TheTrooper wrote: | | Quote: | | i even lighted my mini with primer lol |
Theres always stories like that where people just finished a combustion cannon, so when they go to dry fire it the newly applied glue, is still giving off flammable fumes, ignites and usually singes their eybrows. |
yes but i purposly but primer in my chamber lol |
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| psycix |
| Posted: 06/16/2008 15:39 PM Post subject: |
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Major General
Joined: 25 Jun 2007
Posts: 1591
86.93 Spud Bux
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Primer, the spudder's emergency fuel  |
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| jimmy101 |
| Posted: 06/16/2008 17:29 PM Post subject: |
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Major General
Joined: 28 Mar 2007
Posts: 1596
6769.60 Spud Bux
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Like frankrede said, try the shortest tap you think you can do consistently, 1/4, 1/2, ... seconds.
Blow LOTS of air through the gun between failed attempts, you need to get any "high boilers" to evaporate and exit the gun.
If you can't get it to fire with a very short spurt then move the aerosol can back from the breech of the gun a measured distance, perhaps a foot or more. It may be that the nozzle on the starter fluid can gives a much tighter spary pattern than does a hair spray nozzle. That would make sense since the starter spray is designed to get well directed into an opening that is only an inch or two across, whereas the hairspray nozzle is designed to fan out and cover a persons head. |
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