Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 82 users online :: 5 registered, 0 hidden and 77 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

flour?

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
Sponsored 
  • Author
    Message

flour?

Unread postAuthor: gabeb123 » Mon Sep 28, 2009 7:26 pm

in the rules it says flour is the only solid fuel we can discuss hear. how would you use flour?

do you brown in and put it in your cannon and shake it up really good and spark it?
  • 0


gabeb123
Specialist
Specialist
 
Posts: 47
Joined: Sat Mar 14, 2009 5:23 pm
Reputation: 0

Re: flour?

Unread postAuthor: Ragnarok » Mon Sep 28, 2009 7:33 pm

gabeb123 wrote:in the rules it says flour is the only solid fuel we can discuss hear.

Not the only. You're allowed to discuss a fuel that is solid, provided it requires a gaseous oxidiser to burn. Hence, sugar, coffee creamer, etc... these would also be acceptable.

Anyway, you might find this link useful: http://www.spudfiles.com/forums/sugar-a ... t4082.html
  • 0

Does that thing kinda look like a big cat to you?
User avatar
Ragnarok
Chief of Staff
Chief of Staff
 
Posts: 5339
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK
Reputation: 8

Unread postAuthor: jimmy101 » Tue Sep 29, 2009 3:48 pm

You need to get a very good suspension of the solid fuel. Fan(s) might not be enough, especially in a closed chamber. You might have to use compressed air and time the igntion with the blast of air.

It'll probably take a much stronger spark to ignite than what a typical BBQ piezo will do. A stun gun might be enough. I think you might have to go to an "electric match" or squib to get reliable ignition. (Easy enough to do, a 5 ohm or so resistor and a car battery or car battery charger is the simplest, there are many higher tech ways as well.)

Flour isn't used very often since it isn't fine enough and it's mechanical properties are two dependent on things like humidty. Non dairy coffee creamer is a common cheap and readily available fuel.

Go for it.
  • 0

Image

jimmy101
Lieutenant General
Lieutenant General
 
Posts: 3128
Joined: Wed Mar 28, 2007 9:48 am
Location: Greenwood, Indiana
Country: United States (us)
Reputation: 7

Unread postAuthor: jaythedogg » Tue Sep 29, 2009 4:01 pm

Coffee creamer granules have alot of surface area for their size, relative to similar grains. Very good burn rate.
  • 0

Imitation is not the sincerest form of flattery... STALKING IS!

jaythedogg
Private First Class
Private First Class
 
Posts: 32
Joined: Sun Jun 07, 2009 12:33 am
Reputation: 0

Return to Combustion Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'