“I did not catch up that point yet.” I’m not sure I understand your reply. To clarify my point: plans page 4-3 comes before plans chapter 7 so glassing the firewall should have been completed before f

Eugen, aren’t you supposed to have 1 ply BID on each side of the firewall before fuselage assembly? See plans page 4-3.

Get on the Facebook Quickie group and look up Richard Celata. He is making components available meaning that you’ll be able to purchase new and build from scratch. Also get the plans and newsletters;

Nathan, Your problems with the poor performance you’re getting with your Rotax are almost entirely traceable to your propeller. Your descriptions of your takeoff struggles and limited top speed at red

Cody, Be sure to read all the newsletters, not just the manual. Here’s a link to all the official QAC newsletters: https://davidjgall.com/Q/QAC%20Newsletters/. The other resource you need is the Q-Tal

#avgeek

I might be interested. What’s your location?

Garry Legare built the boxy one without QAC knowledge or assistance. Then he showed up at the factory and they decided he had a good idea. Legare kept worldwide design and distribution rights, QAC got

Eugen, It appears that you machined a 45 degree bevel on the inside contouring of your fuselage sides and bottom. The section A-A you refer to shows a much more shallow bevel. You MAY encounter proble

No, you are not correct. Yes; yes; no. Read the plans again. In your annotations of the picture from the plans, you have misidentified the location of the main wing. The main wing resides in the bay j

Hi Jim, Merry Christmas to you, and to all on the Q-List! I retired from ATC four years ago, then successfully pursued my dream of being an airline pilot for three and a half years before the coronavi

So you’re taxiing downwind at idle at 15 kts. with a tailwind gusting 18-26 kts. from 20 degrees to the right off your tail. Basically, your vertical stabilizer/rudder is at zero airspeed gusting to -

Cody, Ask for Dow Styrofoam XPS PIB at your local industrial insulation supplier. Or call your local taxidermist and ask where he gets his foam. I got nine foot long FB blocks that were 10”x20” from a

Corbin, It looks to me like you could just install the mount as assembled at the factory, but put it on the left side of the case split line under the nuts instead of under the heads of the case bolts

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