Hinge part number cowl doors

[Gary Wallace]

Is ms20257 piano hinges sufficient for cowl doors or are ms20001 hinge required. Thanks. Aircraft spruce piano hinge

[whee]

I used 257 hinges.

[Aero_tango]

257 for me as well. No issue after 100 hrs.

[Gary Wallace]

Thank you. Thats what i used but began second guessing myself.

[Chewie]

Not sure but this may be a related topic of interest:

https://bearhawkforums.com/forum/bearhawk-general-discussion-news/32745-learn-from-my-mistake-design-flaw

[Gary Wallace]

I did see that. I have 20 rivets and will be installing a doubler beneath top hinge at doorskin

[Pbruce]

More piano hinge questions: should the doubler cover only the fixed leaf of the hinge (the top) or both the fixed and articulating leafs?
What width of hinge are people using? I see 1-3/4” and 2” at ACS. Thanks.