flap hinge install

gsimatos · Post by **gsimatos** » Mon Mar 10, 2008 10:39 pm

I am hanging the flaps/hinge to the wing. I have the QB flaps so the rear half of the hinge is already in place on the flap. When I position the flap against the trailing edge of the wing, it doesn't look like I am going to have enough hinge width to safely make my holes. If I keep the trailing edge of the flap lined up with the aileron, it sure looks close to illegal. The plans call for a minimum edge distance of 3/16 which I assume is from the center of the hole to the forward edge of the hinge. I know a photo would be helpful here but the daughter disappeared to girl guides with the camera. Anyone got any ideas on this one?? Thanks G

Post by **bullojm1** » Mon Mar 10, 2008 11:13 pm

This is a common problem. I think the wings ship with AN257-P3 piano hinge (it is stamped into the hinge)-- you probably need to order some AN257-P4 or P5, depending on how much distance you need to overcome. Aircraft spruce as well as Van's carry the wider hinge. ACS's link is http://www.aircraftspruce.com/catalog/m ... ohinge.php and they tell you what the different P? values correspond to in width.

Good luck!

gsimatos · Post by **gsimatos** » Mon Mar 10, 2008 11:56 pm

Yeah, Thats a good idea. I hate to have a step between the flap and aileron or not being happy with the edge distance for the rivets. A wider hinge would be the answer. Gotta love this RB site, Thanks for the quick reply too G

RV7Factory · Post by **RV7Factory** » Tue Mar 11, 2008 2:00 pm

Like Mike said, a common problem. -4 is what you will need, not -5. -5 would be too wide and will interfere with the flap brace. Top pic here. Just be warned, the shipping will be 2X of what the hinge costs you.

cjensen · Post by **cjensen** » Tue Mar 11, 2008 2:39 pm

OH MAN!!! Shipping costs of piano hinge SUCKS!!! I about had a heart attack when I ordered my hinge for the wing tips!

Post by **bullojm1** » Tue Mar 11, 2008 2:46 pm

Really? I ordered a bunch for my wingtips from ACS and the shipping wasn't that bad at all.

RV7Factory · Post by **RV7Factory** » Tue Mar 11, 2008 2:59 pm

IIRC, the shipping on one 6' piece (cost $11), was over $20. $30+ for an $11 part sucks, but at least it is done right.

cjensen · Post by **cjensen** » Tue Mar 11, 2008 3:00 pm

Yup. I just checked my spreadsheet, and I paid $63.36 total for four pieces of 6' hinge. $40 for the hinge (or thereabouts), and $20+ for shipping!

captain_john · Post by **captain_john** » Tue Mar 11, 2008 7:13 pm

Chad, was that from Van?

CJ

Wicked Stick · Post by **Wicked Stick** » Tue Mar 11, 2008 8:42 pm

captain_john wrote:Chad, was that from Van?

CJ

I think it was from Spruce...

cjensen · Post by **cjensen** » Tue Mar 11, 2008 8:47 pm

Yup, Spruce...