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Defrost fans
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n277dl

Joined: 28 May 2007
Posts: 49
Location: Muscatine IA

Posted: Wed Apr 22, 2009 6:06 pm Post subject: Re: Defrost fans

group... 



how did you cut the hole for the fans?  Circle fly cutter on a not flat piece if aluminum doesn't seem like too much fun.



Thanks,

Doug

_________________
Doug
"Fools" are always more creative than process people and will always find ways to ruin a perfectly good set of processes.

dlm46007(at)cox.net
Guest

Posted: Wed Apr 22, 2009 6:39 pm Post subject: Defrost fans

Before you permanently mount the front glare shield, you might consider

several large 5" by 7" access panels on it. They can be covered using

plates, nut plates and cap screws (for easy removal). A defrost fan can be

mount to the back of an access panel. The plate can be flat for fan

installation purposes. You will need these access panels unless you like

lying on your back with the seats removed to service avionics. I can't find

my current pictures of same but they are located one on each side in front

of pilot/copilot. 



--

daveleikam(at)wi.rr.com
Guest

Posted: Wed Apr 22, 2009 7:58 pm Post subject: Defrost fans

I just did that today.  I set the dash upside-down on a sheet of plywood on 

top of two sheets of styrofoam.  Then I pre-drilled the center of each hole 

with a #40 bit just to get an accurate pilot hole.  Then just used a 3.5 

inch hole saw in my 12 volt DeWalt cordless drill.  Low rpm setting on the 

drill.  Gentle pressure.  Debur when done.



Dave Leikam

RV-10 #40496

N89DA (Reserved)

Muskego, WI



---

Mike Whisky

Joined: 05 Jun 2006
Posts: 336
Location: Switzerland

Posted: Wed Apr 22, 2009 11:09 pm Post subject: Re: Defrost fans

Here is what I did. you'll find more on my new webpage under panel-work.



Cheers

Michael

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_________________
RV-10 builder (flying)
#511

ron.mcgann(at)baesystems.
Guest

Posted: Wed Apr 22, 2009 11:30 pm Post subject: Defrost fans

Hey all,



Given my recent experiences with the door magnets and affects on the

compass/magnetometer, just a gentle reminder to consider the magnetic

fields typically generated by DC motors when setting out your panel.



Cheers,

Ron



--

MauleDriver(at)nc.rr.com
Guest

Posted: Thu Apr 23, 2009 3:42 pm Post subject: Defrost fans

Wish I knew what a bad idea it was before I tried it.  I got one hole 

thru ok.  The cutter grabbed  and gave me (thankfully) a small rip in 

the cowling.  I ended up cutting a pair of doublers for both fans.... I 

found out just how lucky I was with the cowling as I tried to cut the 

doublers.  All is well now but not a fun weekend.



Bill "riveting the front panel cowling this week" Watson



n277dl wrote:

 	  Quote: 	
		   



 group... 



 how did you cut the hole for the fans?  Circle fly cutter on a not flat piece if aluminum doesn't seem like too much fun.



 Thanks,

 Doug



 --------

 Doug

 &quot;Fools&quot; are always more creative than process people and will always find ways to ruin a perfectly good set of processes.





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 40843#240843

bwestfall

Joined: 22 Oct 2008
Posts: 131
Location: Portland, OR

Posted: Thu Apr 23, 2009 4:15 pm Post subject: Defrost fans

I used a fan as a drill guide and drilled the four mounting holes.  Then I

traced a circle pattern with a sharpie, drilled a pilot hole or four inside

the pattern, used the cheapy harbor freight body saw to rough cut up to the

line then cleaned up to the rest of the way with the dremel tool and/or

jewelers file.  It went pretty quick and looks great sitting in the garage

buried in fiberglass dust.



-Ben Westfall

#40579




Wish I knew what a bad idea it was before I tried it.  I got one hole 

thru ok.  The cutter grabbed  and gave me (thankfully) a small rip in 

the cowling.  I ended up cutting a pair of doublers for both fans.... I 

found out just how lucky I was with the cowling as I tried to cut the 

doublers.  All is well now but not a fun weekend.



 



__________ Information from ESET NOD32 Antivirus, version of virus signature

database 4031 (20090423) __________



The message was checked by ESET NOD32 Antivirus.

robin1(at)mrmoisture.com
Guest

Posted: Thu Apr 23, 2009 4:50 pm Post subject: Defrost fans

Agreed. Should not be any different than leading edge HID landing light openings with the exception of greater curvature.  

[img]cid:image002.jpg(at)01C9C43B.43494680[/img][img]cid:image004.jpg(at)01C9C43B.43494680[/img]  

[img]cid:image009.jpg(at)01C9C43B.43494680[/img]  

   

Robin  

Do Not Archive  

   

   

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MauleDriver(at)nc.rr.com
Guest

Posted: Thu Apr 23, 2009 6:06 pm Post subject: Defrost fans

Great pics!  I just want to add that I did the same cut for the HID per 

Tim, using the same HF tool.  That was the hairiest procedure I've done 

on the plane to date... and that was 2+ years ago.  WooHoo!  I mean that 

curve seemed to me to be  the minimum possible with that saw and that 

blade.   It's a crude, noisy, vibrating, non-featherable tool.  So the 

greater curvature for the fan is a good thing. 



In retrospect I should have done the same for the fans.  But if you are 

doing the cut for the HIDs, eat your Wheaties first.  I'm still  a bit 

shaken by how close to disaster the whole process was.  But it  turned 

out well.  I'd probably use my die grinder and some files now.  I've 

learned to love files.



Really great pics. I would have used a  drum type sander on my die 

grinder.  I don't use the flat face sander as much as I should.  Both 

sanders are handy tools.



Robin Marks wrote:

[quote]

 Agreed. Should not be any different than leading edge HID landing 

 light openings with the exception of greater curvature.



 HID Lights Small (6).jpgHID Lights Small (7).jpg



 100_2295 Small.jpg



  



 Robin



 Do Not Archive



  



  



 --

bwestfall

Joined: 22 Oct 2008
Posts: 131
Location: Portland, OR

Posted: Thu Apr 23, 2009 8:07 pm Post subject: Defrost fans

Here are the pics of the work in progress.  I didn't seem to take any

pictures of the finished product.  For those that plan to use the body saw

and are worried about that tight corners use your step drill to open it up

so all you have to do is cut straight lines.  I know I did that but damned

if I can find a picture.



I do remember thinking "am I really going to cut into this perfectly formed

leading edge?"  I think I backed off with the drill about 3 times before I

could work up the nerve.  



Ben Westfall

#40579




Great pics!  I just want to add that I did the same cut for the HID per 

Tim, using the same HF tool.  That was the hairiest procedure I've done 

on the plane to date... and that was 2+ years ago.  WooHoo!  I mean that 

curve seemed to me to be  the minimum possible with that saw and that 

blade.   It's a crude, noisy, vibrating, non-featherable tool.  So the 

greater curvature for the fan is a good thing. 



In retrospect I should have done the same for the fans.  But if you are 

doing the cut for the HIDs, eat your Wheaties first.  I'm still  a bit 

shaken by how close to disaster the whole process was.  But it  turned 

out well.  I'd probably use my die grinder and some files now.  I've 

learned to love files.



Really great pics. I would have used a  drum type sander on my die 

grinder.  I don't use the flat face sander as much as I should.  Both 

sanders are handy tools.



 



__________ Information from ESET NOD32 Antivirus, version of virus signature

database 4031 (20090423) __________



The message was checked by ESET NOD32 Antivirus.

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jdriggs49(at)msn.com
Guest

Posted: Fri Apr 24, 2009 7:30 pm Post subject: Defrost fans

Once you get it roughed out then using a small drum sander in a drill works really well. I used this method for the edge light cutout and it was almost a perfect match for the inside curves. I believe the drum is 2" in diameter. 80 grit eats thru the metal real fast and is easy to control. Dan

[quote] From: rv10(at)sinkrate.com

 To: rv10-list(at)matronics.com

 Subject: RE: Re: Defrost fans

 Date: Thu C 23 Apr 2009 21:04:49 -0700

 Here are the pics of the work in progress. I didn't seem to take any

 pictures of the finished product. For those that plan to use the body saw

 and are worried about that tight corners use your step drill to open it up

 so all you have to do is cut straight lines. I know I did that but damned

 if I can find a picture.

 I do remember thinking "am I really going to cut into this perfectly formed

 leading edge?" I think I backed off with the drill about 3 times before I

 could work up the nerve. 

 Ben Westfall

 #40579

 --> RV10-List message posted by: Bill Mauledriver Watson 

 Great pics! I just want to add that I did the same cut for the HID per 

 Tim C using the same HF tool. That was the hairiest procedure I've done 

 on the plane to date... and that was 2+ years ago. WooHoo! I mean that 

 curve seemed to me to be the minimum possible with that saw and that 

 blade. It's a crude C noisy C vibrating C non-featherable tool. So the 

 greater curvature for the fan is a good thing. 

 In retrospect I should have done the same for the fans. But if you are 

 doing the cut for the HIDs C eat your Wheaties first. I'm still a bit 

 shaken by how close to disaster the whole process was. But it turned 

 out well. I'd probably use my die grinder and some files now. I've 

 learned to love files.

 Really great pics. I would have used a drum type sander on my die 

 grinder. I don't use the flat face sander as much as I should. Both 

 sanders are handy tools.

 __________ Information from ESET NOD32 Antivirus C version of virus signature

 database 4031 (20090423) __________

 The message was checked by ESET NOD32 Antivirus.

Rediscover Hotmail®: Get e-mail storage that grows with you.  Check it out.   	  Quote: 	
		  [b]

Albert Gardner

Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

Posted: Sat Apr 25, 2009 9:14 pm Post subject: Defrost fans

You can use a fly utter as a hand tool if you want. It's a bit more work but

much more controllable. The material (up to .032") we are talking about

isn't that bad. Just sub your arm for the drill motor and twist away.

Albert Gardner

Yuma, AZ

N991RV



--

_________________
RV-9A N872RV
RV-10 N991RV

jdriggs49(at)msn.com
Guest

Posted: Mon Apr 27, 2009 5:37 am Post subject: Defrost fans

Where are you guys finding these fan motors? I've looked in Aircraft Spruce and another spot and can't find them. Thanks C Dan

[quote] From: ibspud(at)roadrunner.com

 To: rv10-list(at)matronics.com

 Subject: RE: Re: Defrost fans

 Date: Sat C 25 Apr 2009 22:10:27 -0700

 --> RV10-List message posted by: "Albert Gardner" <ibspud(at)roadrunner.com>

 You can use a fly utter as a hand tool if you want. It's a bit more work but

 much more controllable. The material (up to .032") we are talking about

 isn't that bad. Just sub your arm for the drill motor and twist away.

 Albert Gardner

 Yuma C AZ

 N991RV

 --

msausen

Joined: 25 Oct 2007
Posts: 559
Location: Appleton, WI USA

Posted: Mon Apr 27, 2009 6:09 am Post subject: Defrost fans

Any computer supply place.  They are 80mm computer fans.  

   

http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010110573%201372526580%201372726528&bop=And&Order=RATING  

   

Michael  

       

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Danny Riggs

 Sent: Monday, April 27, 2009 8:37 AM

 To: rv10-list(at)matronics.com

 Subject: RE: Re: Defrost fans  

  

  

   

Where are you guys finding these fan motors? I've looked in Aircraft Spruce and another spot and can't find them

rene(at)felker.com
Guest

Posted: Mon Apr 27, 2009 6:22 am Post subject: Defrost fans

Any computer supply company should carry some.  I got low noise ones, but can not remember where.    

     

Rene' Felker  

RV-10 N423CF Flying  

  

801-721-6080      

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Danny Riggs

 Sent: Monday, April 27, 2009 7:37 AM

 To: rv10-list(at)matronics.com

 Subject: RE: Re: Defrost fans  

  

  

   

Where are you guys finding these fan motors? I've looked in Aircraft Spruce and another spot and can't find them. Thanks, Dan

  

 > From: ibspud(at)roadrunner.com

 > To: rv10-list(at)matronics.com

 > Subject: RE: Re: Defrost fans

 > Date: Sat, 25 Apr 2009 22:10:27 -0700

 > 

 > --> RV10-List message posted by: "Albert Gardner" <ibspud(at)roadrunner.com>

 > 

 > You can use a fly utter as a hand tool if you want. It's a bit more work but

 > much more controllable. The material (up to .032") we are talking about

 > isn't that bad. Just sub your arm for the drill motor and twist away.

 > Albert Gardner

 > Yuma, AZ

 > N991RV

 > 

 > --

drfred(at)suddenlinkmail.
Guest

Posted: Mon Apr 27, 2009 6:37 am Post subject: Defrost fans

Danny;



Computer fans.  Can get them all over the internet or computer warehouse 

if you live near one. 



Dr Fred.



Danny Riggs wrote:

 	  Quote: 	
		   Where are you guys finding these fan motors? I've looked in Aircraft 

 Spruce and another spot and can't find them. Thanks, Dan

jdriggs49(at)msn.com
Guest

Posted: Mon Apr 27, 2009 7:05 am Post subject: Defrost fans

Thanks guys! Hadn't thought of that one! Dan

 

[quote] Date: Mon C 27 Apr 2009 09:29:24 -0500

 From: drfred(at)suddenlinkmail.com

 To: rv10-list(at)matronics.com

 Subject: Re: Re: Defrost fans

 

 --> RV10-List message posted by: "Fred Williams C M.D." <drfred(at)suddenlinkmail.com>

 

 Danny;

 

 Computer fans. Can get them all over the internet or computer warehouse 

 if you live near one. 

 

 Dr Fred.

 

 

 

 

 

 

 

 

 

 Danny Riggs wrote:

 > Where are you guys finding these fan motors? I've looked in Aircraft 

 > Spruce and another spot and can't find them. Th====================

 

 

 

Rediscover Hotmail®: Now available on your iPhone or BlackBerry Check it out.   	  Quote: 	
		  [b]

daveleikam(at)wi.rr.com
Guest

Posted: Mon Apr 27, 2009 7:18 pm Post subject: Defrost fans

Try: 

 http://www.sciplus.com/search.cfm?utm_source=internal&utm_medium=search&utm_content=cf&utm_campaign=celsearchtest&formfield1234567891=19&formfield1234567892=5&formfield1234567894=&term=fans&btnHand.x=0&btnHand.y=0

 [quote]   ---

hotwheels

Joined: 01 Jun 2007
Posts: 240

Posted: Tue Apr 28, 2009 7:55 am Post subject: Re: Defrost fans

or here: http://www.parts-express.com/pe/showdetl.cfm?Partnumber=259-125%20%20%20%20%20%20%20%20&FTR=computer%20fan&CFID=9010675&CFTOKEN=83489149



Lots of fans + cool looking metal grill cover...



http://www.directron.com/fangrill80bb.html

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