1320 Lb STC

Basically, the FAA did not think the Ercoupe was spinproof enough at 1400 pounds with 13° of up travel, so they required it to be reduced to 9°. The item that allowed for the 1320 STC was the reduction in elevator travel, a la the D model.
I’ve had some folks tell me 9° was not a problem, but others have said it is. I imagine it depends on the speeds at which you land. If you land a little faster it probably won’t be any different. But if you slow it almost to the point it drops, you might be surprised when it drops sooner.

Sorry, Bruce, but the STC does require limiting elevator up travel to 9 degrees. For some reason the only place this is spelled out is in the STC itself. To be sure, I sent a note to Don at Alpha. Here is his response:

Limiting the elevator travel to 9 degrees is the core item that allows the increase to 1320.

It is covered in the Stc documents and you should have your a/p verify that the stc requirements have been met and that your aircraft is in full compliance.

Sincerely
Don