Q325

Plane Q325 3

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Type
Build Plan (PDF, AI, etc.)
This plan is adapted from the Quickie 500 balsa plans, and scaled down to 65%.

Very stable and predictable flight characteristics. If you have the need for speed, you will enjoy this one.

requires:
5g servos x 2 - Tail
9g servos x 2 - Aileron
10x2.3mm Round Neodymium Magnets x 2 - hatch
RS2205 2300/2600kv on 4S



Fuselage Build

1. Find the fuselage top, and cut out the hatch section.
2. Remove the paper from the side of the hatch that will be on the inside. This will help the hatch form to the fuse.
Screenshot 2024-01-09 060846.png


3. Glue the magnets in place making sure that the polarity is correct.
4. Glue the paper tabs on the sides of the hatch, down to the sides of the hatch.
Screenshot 2024-01-09 060904.png


5. Using 2 inch clear packing tape, tape over the magnets to ensure they stay in place.
6. Create a tab on the magnet end of the hatch, so that it will be easy to remove hatch.
Screenshot 2024-01-09 060924.png


7. Puncture the holes for the bamboo skewers, making sure they pass through the fuse and doublers.
8. Glue down the fuse doublers. Line them up with the bend mark on the fuse, and are even with the wing cutout.
Screenshot 2024-01-09 061151.png


9. Using a "B" fold glue the sides of the fuse to the bottom. USE A SQUARE! this is critical~
Screenshot 2024-01-09 061213.png


10. Glue down the front bottom of the fuse. again, use a square. for real.
Screenshot 2024-01-09 061225.png


11. Test fit the top of the fuse, lining it up with the notch for the horizontal stab.
Screenshot 2024-01-09 061359.png


12. Glue down the front of the top first, by folding on the score cut. Apply glue to surfaces indicated below.
13. Glue down the back half.
Screenshot 2024-01-09 061417.png


14. Place the hatch into position, so that you can test fit the front top section.
15. Glue front in place, but once in position, remove hatch so that it does not get glued.
Screenshot 2024-01-09 062223.png


16. Glue the Horizontal Stab in place.
Screenshot 2024-01-09 062320.png


17. Using a piece of push rod wire, make the tail gear.
I made a tool for creating the spring out of a spare FT screw driver.
Screenshot 2024-01-09 062345.png


18. I made a wheel by using a scrap piece of hard foam rubber and a Dremel. Sand to shape.
19. CA glue the hub and hub cap to complete the wheel. These files are included in the downloads.
Screenshot 2024-01-09 062409.png


20. Use the black lock from the FT pushrod lock to secure the wheel to the gear wire. Add a dab of hot glue to lock it in place if needed.
Screenshot 2024-01-09 062426.png


21. Put the wire through the tail wheel mount, which is included in the downloads.
Screenshot 2024-01-09 062513.png


22. Carefully puncture the wire through the Horizontal Stab about 1/8 inch from the rudder hole.
23. Push the wire through the bottom of the fuse, making sure that you get the wire straight up and down.
Screenshot 2024-01-09 062526.png


24. Remove the wire, and place it back going from the bottom this time.
Screenshot 2024-01-09 062546.png


25. Glue the wheel mount to the bottom of the fuselage.
Screenshot 2024-01-09 062603.png


26. Glue the rudder brace (included in the download) to the bottom of the rudder as shown below.
Screenshot 2024-01-09 062615.png


27. Carefully bend a 90 in the top of the gear wire and trim to about 1/2 inch.
If you accidentally ripped the foam while bending, it's not the end of the world. it will still work perfectly fine.
Screenshot 2024-01-09 062628.png


28. guide the wire into the rudder brace.
29. Fit the rudder tabs into the holes in the fuse. Pinch them to help them fit.
30. Glue the Rudder in place.
Screenshot 2024-01-09 062640.png


31. If you are using the X-mount (recommended) on the included 3D printed firewall, you can glue the firewall in place at this time. Otherwise, you may want to mount the motor, and then glue in place.
Screenshot 2024-01-10 123233.png


32. Glue the landing gear into the included gear brace.
Screenshot 2024-01-11 161814.png


33. Glue the gear brace into the fuselage.
Screenshot 2024-01-11 161831.png

Congrats! the fuse is almost done!

Wing Build Overview

I use the scrap removed from the C-Fold on the trailing edge, as spacers on the leading and trailing edge. This will give you the correct curvature for both the top, and bottom of the wing. Be sure to hold on to those pieces.

34. Glue the box spars.
Screenshot 2024-01-11 161847.png


35. Glue the C-Fold at the trailing edge.
Screenshot 2024-01-11 161901.png


36. Run a bamboo skewer down the bend lines on the top as well as the bottom.
Screenshot 2024-01-11 161915.png


37. Tape the spacers down to your build surface, to make it easier for proper alignment.
Screenshot 2024-01-11 161937.png


38. Add a bead of glue down each of the bend lines on the top of the wing, and then wipe away with scrap foam.
39. Press the wing to the build surface, so that when the glue cools, it will hold the shape.
40. repeat the process for the bottom of the wing.
Screenshot 2024-01-11 162021.png


41. Apply glue to the center fold, spar, and trailing edge.
42. Fold over and allow glue to cool, then repeat these steps on the other wing half.
Screenshot 2024-01-11 162047.png


43. Test fit the two wing halves together, and trim away anything that will prevent a nice tight fit.
44. Tape the two wing halves together on the bottom of the wing.
Screenshot 2024-01-11 162102.png


45. Apply glue to one half of the join, so that all surfaces will be glued. Bend wing half upwards, hold until glue cools.
Screenshot 2024-01-11 162117.png


46. If needed, trim the center section so that the wing will fit into the notch at the trailing edge.
Screenshot 2024-01-11 162134.png


Screenshot 2024-01-11 162150.png


I hope these directions are helpful. I assume that you know how to complete the other components, otherwise, feel free to message me, or search the forums for help.

Happy flying!

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Author
johnbecker31
Downloads
16
Views
730
First release
Last update
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Latest updates

  1. Q325

    Made slight adjustment to the spar and wing. Added wire cutout to the spar, and "L" label so...
  2. Q325

    This update fixes the CG location, and moves it to the top of the wing.