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Chamber fan placement to ignition... ?

A place to ask general spud cannon related questions.
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Chamber fan placement to ignition... ?

Unread postAuthor: Essohbe » Sun Dec 30, 2012 10:51 pm

From what I understand I would want the fan at the rear of my chamber then have the igniter somewhere in front of it, maybe right in the middle of the chamber?

Does it matter?
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Unread postAuthor: D_Hall » Sun Dec 30, 2012 11:52 pm

Yes, it matters.

Think about it this way... When the gases light, all that gas is going to go rushing forward at very high speed. If the fan is in the front, all those gases have to blow through the plane of the fan. This destroys fans. By contrast, if the fan is at the back, then only a very small percentage of the gases have to blow through the fan (since the vast majority of the gases start out in front of the fan to begin with). Thus, the fan lives a lot longer.
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Unread postAuthor: Essohbe » Mon Dec 31, 2012 11:40 am

I figured as much. I've seen people do it differently but then they didn't show their cannons actually working, quite possibly because they didn't. LOL.
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