Corbin, I think the 5.00 x 5 tire size is half your trouble. The 4.00 x 5 would be narrower yielding more clearance from sidewall to caliper. David J. Gall

Jay, Javafoil, of course! Try to design so that the elevator’s natural float angle is correct for the best rate-of-climb airspeed. This is the desired condition in case of trim failure and/or total lo

Bruce, Jay’s elevator needs a bit more “reflex” on its trailing edge before it could completely go without a sparrow strainer or trim tab. But he’s on the right track. Washout is not a hindrance to ai

Jay, Nice work. Your modified LS1 elevator would go a long way toward reducing the workload required of the sparrow strainers, but you’d still need something like sparrow strainers to push the TE down

Bruce, There would be no sparrow strainers on a Roncz canard, and the Roncz airfoil is thick enough (20.5%) vs. the GU thickness (21%) that the standard GU canard construction method could be used wit

Jay, The UIUC airfoil database has two files: AMSOIL1.DAT is the canard airfoil, AMSOIL2.DAT is the wing airfoil. They’re similar, but the canard airfoil has more camber. I’ve done zero analysis on th

Jay, I think you’ve got the wrong airfoil there. The topic of discussion is canard airfoil, you’re showing the Amsoil Racer *wing* airfoil. That said, what airfoil software are you using? David J. Gal

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