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Hinged fan mount

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Hinged fan mount

Unread postAuthor: irickedit » Fri Sep 24, 2010 2:39 pm

I wanted a fan mount that would let the fan swing out of the way for breech loading without hanging from the wires. I cut a 3/4" piece of 4", the same as the chamber. Cut a fan size section out of it. Drilled the ends of the C slightly larger than a coathanger. Here I used two saftey pins and a piece of CH wire for the hinge because I couldn't find cotter pins in the garage. Squeeze the C and slide it in, it stays right where you put it.
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Unread postAuthor: jackssmirkingrevenge » Fri Sep 24, 2010 10:06 pm

Very ingenious, nice touch :)
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Unread postAuthor: SpudBlaster15 » Fri Sep 24, 2010 10:45 pm

Excellent idea, and it has me thinking about another potential application for this system.

Perhaps a hinged mount, in addition to a spring based energy absorption setup, could be used to help reduce damage to mixing fans in hybrid chambers. Much of the issue with fans in hybrid chambers seems to stem from the relatively high ΔP/t (Rate of pressure change) inside the chamber, which creates a significant pressure differential on the face of the fan. Typically, the fan ends up in several pieces after only a couple shots.

With a swivel mount in place, the fan would be free to swing up against the chamber wall, and avoid experiencing the stress of a mass fluid flow applying force directly perpendicular to it's largest (And weakest) surface.

Of course, one would still have to deal with the melting issue that comes into play when dealing with increased chamber gas density and the higher specific heat capacity values that go along with it, but that should be fairly easy to deal with through the creative application of heat shielding.

So who's up for testing it?
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Unread postAuthor: cfb_rolley » Tue Sep 28, 2010 4:35 am

that's a brilliant solution, well done! definately going to start building a coax soon using this
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Unread postAuthor: bighead33 » Tue Sep 28, 2010 6:43 pm

cool wish i had thought of that :wink: .
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