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Old 10-07-2017, 09:05 AM
RVdreamin RVdreamin is offline
Join Date: Nov 2012
Location: Yulee, Fl
Posts: 60
Default Fuselage question

I am preparing to disassemble fuselage for deburring, dimpling etc. my question is riveting the firewall to the forward bottom and side skins. I am lookin at the preview plans to see how the cowl fits to the fuselage, but can't seem to make sense of how the cow fits except for using a hinge. But what does the hinge fit too. What should I rivet on the firewall now?
Jimmy Black
Started Emp 10/9/2013 Finished 10/16/14
Wings Finished April 9, 2016
Fuselage received Sepember 12, 2016
VAF paid 2017
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Old 10-07-2017, 09:10 AM
nilberg nilberg is offline
Join Date: Dec 2012
Location: Katy, TX
Posts: 180

On my RV-7 (same fuselage dimensions) I have no plans to rivet anything on the firewall flange until I attach the cowling.
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Old 10-07-2017, 09:14 AM
scottmillhouse's Avatar
scottmillhouse scottmillhouse is offline
Join Date: Apr 2007
Location: Madison, AL
Posts: 245

Look again. You must fabricate the hinge pieces and spacers to off set the hinges in to provide for the fiberglass cowl thickness. These need to be drilled, deburred and countersunk before riveting them together with the side and bottom skin and firewall. Do make sure to trim the stainless steel firewall edges back before assembly to match the side skins. If you don't it will be very hard to do and protect your nice side skin edge prior to riveting and impossible after.

There are good reasons to do before cowl fitting. Attaching the hinges eliminates clecos in the way and securely fits everything for a good fit and alignment. The cowl part of the hinge provides support and positioning for cutting and fitting the cowl. I've done three cowls that way so far.
Scott- 2019 dues paid
Got medical back, now building a 7A; N579RV reserved, new engine installed, doing FWF, instruments & finish painting.
RV-12 #120515, N319RV 1st flight 12/2015 now over 280 hours.
RV-9A, 536 hours sold, RV-7 sold, Kitfox sold

Last edited by scottmillhouse : 10-07-2017 at 09:21 AM. Reason: added more
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Old 10-07-2017, 01:05 PM
rapid_ascent rapid_ascent is online now
Join Date: Mar 2008
Location: Dublin, CA
Posts: 934

I agree it's a little confusing about what exactly needs to be done while attaching the forward side skins. I'm in process at that stage. So far I've left some of the forward rivets out in addition to the firewall rivets. I was trying to figure out about firewall sealant too.
Ray Tonks
2018 Donation Paid
RV-7 Fuselage in progress
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