Sparrow Scout RC Plane - Ugly Cousin to the Slow Stick - FPV

The Sparrow Scout is inspired by the Carbon Arrow Slow Stick but with a high parasol wing and a pusher format.  Classic ultralight design for FPV, beginner, and experienced pilots. 

 Features:

• Dual Carbon Fiber Arrow Shaft
• Steerable Tail Wheel
• Bolt-on Wing and mounts
• DJI Camera Platform
• 3D printed body parts including Wheels and Tires (TPU)
• Aluminum Landing Gear
• PDF files for Wings, Body, and Tail (Tiled PDF for A4 and US LETTER)
• All up weight with 2200mAh 3S pack is about 980g -- this includes full FPV system, OSD, GPS.

List of additional parts can be found here:

• Two sheets of 5mm Foam Board
• Motor 1120KV - D2836 Brushless: https://amzn.to/427xG5n
• ESC - 30A with 3A BEC: https://amzn.to/3ODN95O
• Propeller - 8x6 E prop:  https://amzn.to/40raYEm
• Servos - MG90D Digital metal gear:  https://amzn.to/3weywzB
• 3S 2200mAh Lipo battery
• Camera - DJI Vista / Link: https://amzn.to/49ryz9t
• Goggles - DJI FPV Goggles:  https://amzn.to/49ryD9d
• Carbon Arrow 7.5mm OD - SP 400 31 inch Zhao.Fu: https://www.walmart.com/ip/2137116565
• Aluminum Landing Gear:  https://amzn.to/40bWKpz
• Nuts and Bolts
  • ¼-20 x 1 inch nylon bolts for wings with nuts
  • 4-40 x 1 inch screws for leading edge to use as wing pegs (or 1/8 carbon)
• Collar for steerable wheel:  https://www.dubro.com/products/nickel-plated-dura-collars?variant=27880684423
• 3mm or 1/8" Carbon fiber tube for Main wing leading edge and trailing edge: https://flight-model.com/products/10pcs-3mm-diameter-500mm-length-carbon-fiber-rods-matte-surface?variant=35612287631525
• EZ-Connectors:  https://amzn.to/3WaOmp8
• Optional 180 degree digital servo for camera pan:  https://amzn.to/3PqgLDP
• Colored Packing Tape:  https://amzn.to/4jf8nVa
• 3M 25mm long nylon bolts:  https://amzn.to/4jyWv0o
• 3M nylon nuts:  https://amzn.to/3CpkRZN

Printing Settings:  

• I used Overture Matte PLA:  https://amzn.to/3wxdw7p
• 3 wall layers
• 35% in-fill
• 0.2mm layer height
• Some Parts print best with supports but not required

Please note that each printer may print slightly different.   It is a good idea to print one part to test the fit on the carbon arrow.  The parts should be snug but able to move with pressure.  You do not want them loose or sliding around.   If needed apply scaling when you slice the parts.   You can always add a dab of hot glue to secure a loose piece.

Use the full length of the recommended Carbon Fiber Arrows (31 inches) – no need to cut them down.   Most of the parts placement is determined by their location on the arrow shafts.   The nose piece, battery tray, landing gear plate, and front wing mount will all be touching.   Use the photos and video as reference for placement.  As with all Slow Sticks, you can move things around to your liking or as CG may dictate.

*Please reach out with questions.   I would love for you to share your makes here.  

Thank you!