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 86 users online :: 5 registered, 0 hidden and 81 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

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

The Team
Administrators
Global Moderators
global_moderators.png CS

How do I use a chamber fan...tedious...sorry.

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

How do I use a chamber fan...tedious...sorry.

Unread postAuthor: Tatersalad2000 » Tue Aug 11, 2009 10:43 pm

I'm 50% done with my 2nd cannon. The first one being from 12 years ago.

Reading here has really helped and I plan to be launching this weekend.

I've never installed a chamber fan but it appears to be an apocalyptic mistake to not have one.

I've found plenty of info on installing....good stuff.

I just have no idea how to use it.

Obviously you want to blow the fumes out after each shot.

What about after the fuel is sprayed in? Full blast?

if so, how about just mounting the battery inside and just leaving it on the whole time?

That would avoid drilling a hole for the wires.

Is this viable aside from fussing over the overwhelming expense of 9V batteries?

Edited by jrrdw.
  • 0


Tatersalad2000
Private
Private
 
Posts: 11
Joined: Sun Aug 09, 2009 6:12 pm
Reputation: 0

Unread postAuthor: niglch » Tue Aug 11, 2009 10:52 pm

You can use the chamber fan in 3 different ways:
    *Before each shot in order to mix the fuel.
    *After each shot to vent combustion products and reoxygenate the chamber.
    *During the shot in order to produce turbulence and increase the speed of the flame front.

The first two are the most important. I'm not sure if the last one produces much of a noticable affect, but theoretically, it should also help performance.

I guess you could mount the battery inside. However, you would have to manually remove the battery from the chamber when the gun is not being used. Personally I would use a switch though.
  • 0


niglch
Staff Sergeant
Staff Sergeant
 
Posts: 116
Joined: Sat Jul 07, 2007 8:14 pm
Reputation: 0

Unread postAuthor: Tatersalad2000 » Wed Aug 12, 2009 11:38 am

Okay I'll get it rigged up and see how it goes. Thanks.
  • 0


Tatersalad2000
Private
Private
 
Posts: 11
Joined: Sun Aug 09, 2009 6:12 pm
Reputation: 0

Unread postAuthor: jimmy101 » Wed Aug 12, 2009 12:54 pm

If you are fueling by "squirt-n-screw" I wouldn't run the fan during fueling. Squirt the fuel, close the chamber then turn the fan on.

If you have a fuel meter, or inject with a syring through a small port then you can leave the fan running all the time.

DR (aka bigdog?), IIRC, has used those small cheap "personal" fans (hand held battery operated with foam of thin plastic safety blades) and just mounts the entire fan assembly inside the chamber and leaves it running during the entire shooting seesion.
  • 0

Image

jimmy101
Lieutenant General
Lieutenant General
 
Posts: 3130
Joined: Wed Mar 28, 2007 9:48 am
Location: Greenwood, Indiana
Country: United States (us)
Reputation: 7

Return to Combustion Cannon Discussion

Who is online

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

Reputation System ©'