Dorsal Fin

Ken Patry · Post by **Ken Patry** » Mon Sep 04, 2006 18:00

Can someone tell me if there is an STC to install just the Dorsal Fin on a 7ac. Thanks... Ken Patry[/u]

MikeB · Post by **MikeB** » Mon Sep 04, 2006 20:00

Ken,
I don't believe I've ever seen a STC for just the dorsal fin. I kind of scanned the STC list and didn't see it. As there are probably hundreds of 7AC's with 65's running around with large dorsal fins on them (I have one) I can't imagine where it would be a problem putting one on if you want to....although, as you're probably aware, they're usually part of a conversion. Some owners think they spoil the 'clean' looks of the orginal Aeronca. Having flown both, small and large, I think the large dorsal feels more stable in the air, but that's just a personal opinion.

If nothing else, it should be easy to get a 337 to install one (famous last words

).

Mike

Ken Patry · Post by **Ken Patry** » Mon Sep 04, 2006 20:17

Thanks Mike...
I like the looks of the big fin, I know it's not original, but if I ever decide to upgrade the engine, I'll be part way. I've already installed in the braces up front and a wing tank, so I think I will put the large fin on. Thanks again.
Cheers
Ken Patry

Ron Babos · Post by **Ron Babos** » Mon Sep 04, 2006 21:12

Ken Patry: I have to agree with Mike on the fin being more stable. In turbulence the small tail wags it's tail more.
Ron

B PANCAKE · Post by **B PANCAKE** » Mon Sep 04, 2006 21:17

The clamp-on dorsal fin, Models 7AC and 7BCM ( Aeronca dwg. 4-678) 3lb. (+148") See TSDS A759 Miscellaneous (not listed above) #618. No STC is necessary,Just a 337 form.

Ken Patry · Post by **Ken Patry** » Tue Sep 05, 2006 21:16

Thanks everybody, that answers my question... I will do a 377 or what ever it is called up here in the great white north.
Cheers
Ken