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08-02-2016, 07:48 PM
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Join Date: Mar 2013
Location: San Diego
Posts: 189
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Firewall Passthrough
Where did you put your firewall pass through for wires, sensors wires etc and how big?
I plan on going with the SS kits from Spruce. After a search on line I found a few examples but looking to see where others put them and what size.
Thanks in advance
E
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08-03-2016, 07:22 AM
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Join Date: Jan 2014
Location: Cedar Hill, TX
Posts: 330
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Timely Question
You're question is very timely, I was about to ask the same thing. I did buy two of the 1" SS pass threws, I was wondering if you just enlarge the two holes in the image below to be 1" or are these earmarked for something else, I looked through the plans and can't really see that these are for anything else:

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RV-10 in Process
Last edited by Lynnb : 08-03-2016 at 09:16 AM.
Reason: Images not showing
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08-03-2016, 08:35 AM
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Join Date: Dec 2007
Location: Flagstaff, AZ
Posts: 2,653
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I can't see your image but if that is the roughly thumb-sized holes left and right on the firewall, that is indeed what they are intended for. However, I am using sealed CPCs for my passthrough and the extended sleeve (about 3 inches) would have interfered with the motor mount, so I covered the existing holes with riveted stainless steel covers and relocated my openings. My point is that you can relocate things as needed and appropriate for your installations.
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Patrick Kelley - Flagstaff, AZ
RV-6A N156PK - Flying too much to paint
RV-10 14MX(reserved) - Fuselage on gear
http://www.mykitlog.com/flion/
EAA Technical Counselor #5357
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08-03-2016, 08:46 AM
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Join Date: Jan 2014
Location: Cedar Hill, TX
Posts: 330
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Thanks, can other's not see my image? I have been having a hard time moving from picassa to goggle photos.
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RV-10 in Process
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08-03-2016, 08:48 AM
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Join Date: Sep 2015
Location: Park Ridge, NJ
Posts: 639
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cant see it either...
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08-03-2016, 08:55 AM
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Join Date: Jan 2013
Location: Bay Area, CA
Posts: 171
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Make sure you share the photo first and then change your link.
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Llama (RV-10), flying, 450 hours.
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08-03-2016, 09:17 AM
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Join Date: Jan 2014
Location: Cedar Hill, TX
Posts: 330
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Ok, how about now: 
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RV-10 in Process
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08-03-2016, 09:38 AM
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Join Date: Jan 2013
Location: Bay Area, CA
Posts: 171
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Yup, I can see both now 
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Llama (RV-10), flying, 450 hours.
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08-03-2016, 12:44 PM
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Join Date: Jul 2012
Location: Bartlesville, OK
Posts: 237
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Not many people have chimed in. I'm also interested in what people have done. I've been stalling drilling mine, but I'm about finished with the avionics and will be riveting my panel substructure in soon and would rather install the passthrough prior.
I'm thinking I will use the existing LH hole for my battery cable, install a 1" firesleeve passthrough near the center, and use the RH passthrough hole only if I were to run out of room in the 1" hole. 
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Andrew Austin
RV-10
-Flying!
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08-03-2016, 12:56 PM
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Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,797
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Remember that the alternator wire carries a pretty large current and does have some ac ripple on it. In principle good avionics boxes will filter out any pickup, but I chose to use separate firewall holes for the alternator output, and for low level signals (EGT probes, etc). ymmv
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