Cracked lower cowl attach bracket

[rvbuilder2002]

And N410RV, the orig. prototype, has 2000+ hours on the original standard part.

Hmmmmm.......

[n981ms]

Mine broke at around 350 to 400 hours.

[xavierm]

[Weasel]

I broke mine 2 times in 1100 hrs

[bill@fusion4.net]

Originally Posted by rvbuilder2002

And N410RV, the orig. prototype, has 2000+ hours on the original standard part.

Hmmmmm.......

Hmmmm. I wonder if cowl attach variations make a big difference.
I have Camlocks on the perimeter.

[TimO]

Mine's original at 1265 hours.

I have screws for the bottom cowl, not hinges.

[Janekom]

I have three dzus fasteners each side on the bottom cowl and it cracked at about 150 hrs. Made a new one from slightly thicker material and made the top longer to take two fasteners. One as per plan and one about one inch back with a rivnut into the belly skin. Ok up to now at about 430 hrs

[n981ms]

Mine has screws all around.

[MauleDriver]

I used screws and my bracket is intact after 6 years on a rough field. Didn't look like it would last.

Originally Posted by Dorfie

I've seen this in a friend's RV10. I reinforced mine from the get go because of that.
I'm theorizing that the hinges at the bottom allows for more movement and might be contributing to the problem. I know many builders, myself included, installed screws to attach the bottom of the cowl to the fuselage.
Any of the broken one's from bottom cowls attached with screws?
Johan

[douglassmt]

Mine is fine after 1000 hrs. I've got 1/4 turn fasteners on the bottom cowl. They're also powder coated.