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Old 12-17-2017, 08:15 PM
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czechsix czechsix is offline
Join Date: Mar 2006
Location: Spring Hill, KS
Posts: 336
Default Break edges of skin around aft window?

For those who have fitted the aft window, did you find it necessary to break the edges of the upper skins (F-01474-L and -R) where they meet the plexiglass in order to get a nice fit? Plans don't mention this when building the tailcone, and if needed I'd rather do it before painting the inside of the skins (I paint interior parts prior to riveting).

Mark Navratil
Spring Hill, KS
RV-8A N2D #80583 - built/flew/sold
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Old 12-18-2017, 12:04 AM
Jake14 Jake14 is offline
Join Date: May 2014
Location: Seattle
Posts: 194

I did, but very slightly. Seemed to help, especially along the top. Best to do it before you dimple, but I imagine most folks have already dimpled at that point
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Old 12-18-2017, 01:12 AM
control control is offline
Join Date: Feb 2006
Location: Stockholm, Sweden
Posts: 585

I did so, needed?
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Old 12-18-2017, 06:41 AM
Tom023 Tom023 is offline
Join Date: Jul 2011
Location: Cypress, TX
Posts: 263

Yes the plans call for it. See p38-03 step 13. I found it difficult to break the extreme forward edges near the roll bar.
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Old 12-18-2017, 09:54 AM
Bavafa Bavafa is offline
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 2,549

At least during the construction of the tail cone, the instructions says not to dimple and no mention of edge break for this area. I guess I need to double check those pages. Remember, this part does not get riveted but screwed, there will be a thin layer of proseal or other type seal used for water proofing and you want an straight skin so the aft canopy part can easily slid in-out for fitting.
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Last edited by Bavafa : 12-18-2017 at 09:56 AM.
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Old 03-10-2018, 06:43 PM
Bernard Hartnell Bernard Hartnell is offline
Join Date: Jul 2013
Location: Grand Junction, CO
Posts: 64
Default Roll edge with special roller tool only!

It was not possible to roll edges top center due to longatudinal bar over luggage compartment. But plexiglass window will seal better with proseal if edges are rolled as possible. Practice on scrap first to be sure you like the result. Change tool if needed.
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Old 03-10-2018, 07:13 PM
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bkervaski bkervaski is online now
Join Date: Mar 2017
Location: Birmingham, Alabama
Posts: 896

Mine was already dimpled at that point but I still put a very slight break on the edges. Turned out good but would have been better if I had done it before the dimpling.
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