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Old 09-27-2018, 04:19 PM
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n38139 n38139 is offline
Join Date: Jun 2005
Posts: 629
Default Cowling fasteners?

Anybody used something beside the piano hinge on the cowling sides to keep the two pieces together? I was thinking of something like a zeus type fastener.
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Old 09-27-2018, 04:30 PM
terrye terrye is offline
Join Date: Feb 2010
Location: Vancouver, BC, Canada
Posts: 752
Default Cowling fasteners

Lots of discussion about this, use the search function. Dzus fasteners are probably not a good choice. Best choice seems to be with either Milspec or Skybolt
Terry Edwards
RV-9A (Fuselage)
2018/2019 VAF Contribution Sent
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Old 09-27-2018, 04:43 PM
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Carlos151 Carlos151 is offline
Join Date: Jan 2008
Location: Lebanon, TN
Posts: 132

Plus1 for Skybolt.
Karl Richcreek
N151TK "La Otra Chica"
Flying as of August 14, 2015
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Old 09-27-2018, 04:51 PM
rocketman1988 rocketman1988 is online now
Join Date: Jun 2010
Location: Sunman, IN
Posts: 1,485
Default skybolts

Aerospace Engineer '88

Structure - 90% Done
Cabin Top - Aaarrghhh...
EFII System 32 - Done
290 HP Barrett Hung
ShowPlanes Cowl with Skybolts Fitted - Beautiful

Dues Paid 2018,...Thanks DR+
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Old 09-27-2018, 05:25 PM
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Carl Froehlich Carl Froehlich is offline
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 1,920

I never liked the look of Skybolts or other such fasteners and have always used hinge material - but this is builder preference so decide what you want.

I note however that the lower cowl hinge should be replaced with the more robust extruded hinge (MS20001) or aluminum plates with nutplates.

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Old 09-27-2018, 07:57 PM
Deweyclawson Deweyclawson is offline
Join Date: Jun 2014
Location: Enon Valley
Posts: 170
Default skybolts

skybolts + 4
Dewey Clawson
Super Sabre Society
2012 RV10; 1993 RV6A; 1947 Cessna 140, in progress
2019 dues exempt but paid anyhow
F100, A7D, A10, F16,
Fokker, Boeing, McDonnell-Douglas
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Old 09-27-2018, 09:09 PM
Timberwolf Timberwolf is offline
Join Date: Nov 2016
Location: Navarre, FL
Posts: 336

Skybolt’s are nice, but for the price and pain of installing them in a cowling with the engine already mounted and cowling painted, I would go back with a piano hinge in a heartbeat. The piano hinge is cleaner, lighter, cheaper.
RV-6 IO-360 Angle valve, G3X touch
Murphy Moose M14P in progress
Aero Engineer, A&P

Last edited by Timberwolf : 09-28-2018 at 07:23 AM.
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Old 09-27-2018, 09:38 PM
Tommy123 Tommy123 is offline
Join Date: Jul 2018
Location: Naples fl
Posts: 135
Default Camloks

I went with cam locks.
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Old 09-28-2018, 06:02 AM
wilddog wilddog is offline
Join Date: Feb 2008
Location: va.
Posts: 383

Use something other than hinges across the top firewall and bottom by exhaust.
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Old 09-28-2018, 09:52 PM
bifft bifft is offline
Join Date: Feb 2012
Location: Utah
Posts: 77

I started with the hinges, but then after many times spending several hours trying to get the last few inches in I said, quite literally, "screw it". Replaced the last nine inches with countersunk screws and tinnerman washers going into nutplates. Also used them for the bottom of the cowl.
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