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Unread 03-14-2006, 04:04 PM   #86
bigben2k
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Join Date: May 2002
Location: Texas, U.S.A.
Posts: 8,302
Default Re: Wind Tunnel Construction

Help, I need someone's input!

I need a solution to mount the nichrome wire, something cheap, that won't burst into flames

I'm going to pickup an assortment of nichrome wire with gauges 30, 33, 34, 36, and 38. The temp controller is going to drive the SSR DC, and my Harrision PSU will power (0-36 v, 0-5 amps) the nichrome wires.

I've got a couple of heavy cardboard tubes, 80 mm diameter, and ~ 6 inches long. I'll slap a spare 80 mm fan at one end, mount the nichrome wire assembly in the middle, then the thermocouple at the end.

What I don't have, is a cheap way to mount the nichrome wires, probably in some kind of ziz-zag arrangement. Does anyone have any ideas?

All I can think of right now, is some kind of flimsy wood frame with steel screws. either that, or sacrifice a hair dryer or the spare toaster. McMaster has ceramic sheets that I might be able to cut, somehow...
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