Allen Fulmer
Joined: 10 Jan 2006
Posts: 79
Location: Alexander City, AL
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 Posted: Sun Aug 22, 2010 7:40 pm Post subject: Different hinge material on drawings |
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It has been several years since I inventoried my finish kit so I have kind of lost track of which hinge goes where and why.
If I understand DWG#45 for RV7 there are two types of hinges material specified and 2 types of hinge pins:
The side hinges that connect the top and bottom halves are AN257-P3. These get a .090 stainless pin.
Top, bottom, and sides of cowl use “1/8” piano hinge” (which is different from AN257-P3), and get a 1/8” SS pin EXCEPT the top hinges that get a .090 SS pin.
Why not use the same 1/8” piano hinge on the cowl sides? (It looks so much more substantial.) Not as much load I guess?
I had to order the AN257-P3 since I had “cannibalized” some of it (for something) and I ordered some P3 and P4 (1/8” wider, same pin dia.) figuring I would make the two side hinges using half P3 and half P4 and set the bottom half up enough so the “loops” would not show at the parting line between the cowl halves. Other than being a little anal about it, does anyone see any problems with this idea?
Other than the increased cost would it be any better to use the extruded hinge material?
Thanks,
Allen Fulmer
N808AF reserved
RV7 fitting cowl
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RV7 QB Fuselage
Eggenfellner H6 on orde
N808AF reserved
Alexander City, AL |
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