Bruce, The LS-1 airfoil has been a poor choice since day one, precisely because of the elevator shape that causes it to float trailing-edge up requiring sparrow strainers to counteract. And QAC knew i

Dang it! Bruce, I misunderstood where you were putting the zig-zag tape. Disregard my previous post.......

Bruce, I don’t think the zig-zag tape “created drag” the way you describe it. To me, your description seems like the tape was doing exactly what it was supposed to be doing: keeping the airflow energi

Jay, I’m laughing out loud as I’m writing this: Did you previously design suspension systems for the BMW motorcar company? That’s the most compler-kated way I could imagine to do that — and yet, it pr

I’m in Marin County but my hangar is in Petaluma. In the fog. 😝

Hi Jim, Thanks for the compliment. I retired from that job three years ago. I’ve been chasing my boyhood dream of being an airline pilot by flying for SkyWest Airlines ever since, and I’m still pursui

Jay, I understand that you “…do not have the elevator trim system installed.” However, please clarify: Do you or do you not have any springs “attached” to your elevator control system? Thank you, Davi

Matthew, Thank you for your significant contributions to this discussion, they are much appreciated! David J. Gall

Jay, The hinge pin on the Roncz canard elevator is not concentric with the elevator torque tube. It is approximately 0.1” from the inner surface of the torque tube at the extreme bottom of the tube, m

Jay, BINGO! Again, you don’t want the float angle for cruise, you want the float angle for LOW cruise/max range or even a little slower. Remember, the worst-case scenario is that you are going to cras

Jay, P.S. Where’d you find a picture of a Roncz R1145MS with a powered trim tab? THAT was never part of the Roncz canard plans. That depiction of the Roncz canard is actually incorrect. The elevator h

Jay, No, but you’re getting MUCH closer. Think full-span fixed trim tab. Like on the paper airplane you made as a kid: bend the trailing edge up a little bit. The million-dollar answer that makes guys

Jay, Nope. That’s not what I said. Not even close. David “Jimmeh” Gall

Jay, John Roncz came up with the solution to this many years ago. It’s called the “Roncz canard” in the Long-EZ community. It’s an excellent airfoil, but particularly important is what he did to the e

Sam, Yes, I have the Weishaar-Doyle plans. I’m working on redrawing the drawing because I can’t get a good copy without distortion. So I’m redrawing it in CAD.... David J. Gall

I can't see any photo or attachment with this post...?

Why not just dig up a copy of the old Weishaar & Doyle built-up carbon spar canard plans and start building?

Corbin, I worry for your safety. You seem much too cavalier in your approach to this task. Please let an experienced Q driver do your taxi testing and initial test flights. At the least, wear a helmet

Nice! Thanks for that.

Lapo, 1. There are no "design rights" but there is a copyright on the plans. There doesn't seem to be any interest in enforcing that copyright, however, as PDF copies are abundantly available. Good lu