Part# 05-15935-F
MFR Model# S1RI-F
SizeDescriptionPart No.
StandardSingle Lever Quadrant w/Friction05-15935-F


These quality quadrants have been in use for over 35 years in a wide variety of experimental and ultralight aircraft. All quadrants are made with AN standard hardware and aircraft-quality 6061-T6 or 2024-T3 Aluminum. All sizes and models can be utilized for a side mount, center mount, or dual-control hookup. Can be used in Pitts, Cub, Aeronca, Bakeng Deuce, Horizon 2, Dakota Hawk, Quicksilver, Mini Max, Dragonfly, X-Air, etc. If you have an aircraft, we have a quadrant that will fit your needs.

Model #3 - This internal reversing hook up is ideal for a variety of different aircraft models. Available in all four sizes with one, two or three levers. Friction or non-friction. L-series. Can achieve a throw up to 3-1/8".

Four sizes available:
Special series quadrants:
Large Series 4-78" wide x 4" tall. 13 oz.
Standard Series 4" wide x 3-1/2" tall. 11 oz.
3/4 series 3-7/8" wide x 3" tall. 10 oz.
1/2 series 3-7/8" wide x 2-5/8" tall. 8 oz.
RV-series 4" wide x 4" tall. 12 oz.
Panel Mount
4" wide x 3-1/2" tall 12 oz.
Twin Engine
4-7/8" wide x 4" tall 15 oz.
All weights are for two arms and friction. (Except twin engine).
Measurements do not reflect Lever lengths.
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.



Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the difference between INTERNAL REVERSING or NON REVERSING?

Internal reversing is when the cable is attached to the lever inside the housing, and when the handle is pushed forward, the cable is pushed backward. Non reversing, is when the cable is connected to the lever, and the handle pushed forward, the cable is pulled forward.