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UMA 2-1/4 ELECTRIC TACHOMETER 0-3500 RPM

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4 Cylinder (1 Pulse)4 Cylinder (2 Pulse)6 Cylinder
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Overview

These 2-1/4" tachometers were designed to offer aviation styling and performance for all types of aircraft. These tachs have high resolution and easy to read displays. The analog model has a 270 sweep which provides great resolution in both the 3500 and 7000 ranges. The digital model has a bright LED display. Separate power source required. Installation is simple. If using mag pickup 1A9-1 or 1A9-2, remove vent screw-cap from magneto and screw in one of this mag sensors. Connect power to the tach and plug in DB-9 connector into the tach. If using 1A3-4 sender that goes into mechanical port, just install it there, connect 4 pin connector to the sender and DB-9 connector to the tach and connect power leads to the aircraft fuse box. Instructions included.

Lycoming/Continental
(to replace mechanical tachs)
Current: 80 milliamps Size: 2.25" round x 2.75"deep

Magnetic pickup (6 ft. cable length) included with P/N's 10-02141 and 10-02140 (T1A9).

6 ft. harness, sending unit, and .156 diameter tang adapter included with P/N 10-00083 (1A3-4).

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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: Does the UMA 3500 2 1/4 Analog tachometer have internal lighting?

The UMA 3500 2-1/4 Analog Tachometer does not have internal lighting.

Q: Would this Tach be approved for a certified PA-18 SuperCub?

No, these instruments, part numbers 10-00083, 10-02140, and 10-02141, are not TSO'd for certified aircraft.

Q: Would this Tach work with spark plug wire wrap type impulse sensors on a Rotax 912 ULS? (The Rotax' Tach Lighting Coil has malfunctioned)

No, this tach will not work on a Rotax 912. The range of this tach does not even reach the speed of the Rotax engine. I think what you're asking about is the tiny tach, part number 10-04182.

Q: Would this Tach be approved for a certified for Cessna 150?

No. This Tach is Non TSO'd and can not be used in a certified aircraft.

Q: Will this tach run at 24 - 28 Volt system? We are using it in a test stand.

Per the installation manual the supply voltage is +10 to +28 Volts DC, Hourmeter output +12V @ 20ma max.

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