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"ice-box" avionics cooling fan

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sarg314(at)comcast.net
Guest

Posted: Tue Aug 26, 2008 7:20 pm Post subject: "ice-box" avionics cooling fan

I bought an "Ice-Box" avionics cooling fan from spruce.  The FN-200 

model has 3 output ports and seems to blow a lot of air for not much 

current.  The output tubes are about 3/4" long and have a diameter that 

is 0.025" LARGER than 5/8".  You're supposed to push a 5/8" CAT tube 

over these outlets.  The 5/8" CAT tube I bought does NOT want to go over 

those tubes.   It's not very stretchy stuff.  The fan manufacturer tells 

me to push hard and "screw" the tube on. Lubricants don't seem to help. 

  It's really hard to do. I succeeded with one tube.  Ruined the second 

one. The prospect of having to do this while laying under the instrument 

panel is awful.



Has any one dealt with this fan product?  Is there some secret to 

getting the tube to go over the outlets or is there some other type of 

tubing that I can use.  I don't like vinyl tubing - it ages fast and 

makes bad chemicals when it burns.  There's some polyethylene tube that 

might work.



Thanks for any ideas.



--

tom s., RV-6A.

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Bob Perkinson

Joined: 10 Jan 2006
Posts: 51
Location: Hendersonville, Tennessee

Posted: Tue Aug 26, 2008 7:42 pm Post subject: "ice-box" avionics cooling fan

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cjensen(at)dts9000.com
Guest

Posted: Wed Aug 27, 2008 11:56 am Post subject: "ice-box" avionics cooling fan

Tom,



Take a hair dryer, or even better, a shrink tube heater/blower, and heat up the hose until its very hot to the touch.  This will make the end pliable and stretch over the hose nipple a little easier.  When it cools, it'll be on for good.  Becareful if you used petroleum based lubricates, depending on hose type, it can eventually degrade the hose.



Chuck Jensen

--

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sarg314(at)comcast.net
Guest

Posted: Wed Aug 27, 2008 6:29 pm Post subject: "ice-box" avionics cooling fan

Thanks for the responses on this.  Bob Perkins suggestion of clipping 

out the spiral wire in the last 1/2" of the CAT tube seems to work 

pretty good.  An old A&P I know suggested that also.  It's a litle 

tricky since the wire is on the inside of the tube, but you can do it.



--

Tom Sargent, RV-6A.

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pitts_pilot(at)bellsouth.
Guest

Posted: Sun Aug 31, 2008 9:41 pm Post subject: "ice-box" avionics cooling fan

Tom, bevel the edge slightly to ease the scat tubing over the port.  The 

wire should be bent back and pushed inside the tube where it can't poke 

a hole in it.  It does take a lot of patience though!

Linn



tom sargent wrote:

 	  Quote: 	
		   



 I bought an "Ice-Box" avionics cooling fan from spruce.  The FN-200 

 model has 3 output ports and seems to blow a lot of air for not much 

 current.  The output tubes are about 3/4" long and have a diameter 

 that is 0.025" LARGER than 5/8".  You're supposed to push a 5/8" CAT 

 tube over these outlets.  The 5/8" CAT tube I bought does NOT want to 

 go over those tubes.   It's not very stretchy stuff.  The fan 

 manufacturer tells me to push hard and "screw" the tube on. Lubricants 

 don't seem to help.  It's really hard to do. I succeeded with one 

 tube.  Ruined the second one. The prospect of having to do this while 

 laying under the instrument panel is awful.



 Has any one dealt with this fan product?  Is there some secret to 

 getting the tube to go over the outlets or is there some other type of 

 tubing that I can use.  I don't like vinyl tubing - it ages fast and 

 makes bad chemicals when it burns.  There's some polyethylene tube 

 that might work.



 Thanks for any ideas.



 -- 

 tom s., RV-6A.

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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