RC Allen Instruments Turn Instruments

We have more than sixty years experience in the design and manufacture of quality rate of turn gyro instruments. That's how we got our start!

Our turn coordinator is very popular and can be found in many production aircraft around the world. It contains an electrically driven gyroscope which is supported in a gimbal inclined to the horizon so that the instrument senses roll as well as yaw. The RCA82A/83A Series is an all-volt instrument that works from 11 to 30VDC. The turn motion is presented by an airplane symbol banking on a fixed horizon with a power warning flag.

Our popular RCA56 Series Turn-and-Bank is a rate-of-turn pointer controlled instrument which is powered by an electrically driven DC precision gyro. Along with it's built in inclinometer, It gives the pilot accurate turn and bank information. The RCA56 series is an all-volt instrument that works from 11VDC to 30VDC. This is a 2-minute turn instrument which features a power warning flag, your choice of either a black or white inclinometer ball and comes as lighted or non-lighted.

The A1050 Series of two-inch Turn and Slip indicators is one of our most popular instruments. You will love the clarity of the illuminated dial on the lighted version. This series of 2” Turn and Slip indicators are hermetically sealed, have direct reading turn and bank, are filtered against radio noise and have a mechanical governor speed control. A time tested design that will last for years.

A turn-and-slip indicator will sense rotation only about the vertical axis of the aircraft. It tells nothing of the rotation around the longitudinal axis, which in normal flight occurs before the aircraft begins to turn.

A turn coordinator operates on gyro precession, the same as the turn indicator, but its gimbal frame is angled upward about 30° from the longitudinal axis of the aircraft. This allows it to sense both roll and yaw.

The inclinometer or "coordinator ball" shows the relationship between the bank angle and the rate of yaw. The turn is "coordinated" when the ball is centered. The aircraft is "skidding" when the ball rolls toward the outside of the turn and is "slipping" when it moves toward the inside.