NOTE: Some engines, such as multi-cylinder outboards generate considerable electronic "noise" and may require a light filter to assure a clear RPM reading. You will find a "comments" section at the end of the order page where you can tell us about your engine – what kind and how many cylinders it has – so that we can make any necessary adjustments.
One year warranty
Note: This will not work with a shielded ignition harness or lead.
TINY TACH MODEL TT2A
Worked very well- fast shipping. Wound highly recommend to others Thanks R. B.
Replacement for my old Tiny Tach. Battery finally gave out. 5 yrs old.
The battery in my first Tiny Tach lasted from 1998 until 2015. Results may vary.
My Tiny Tach on my Starflight Ultralight with a Rotax 377 just died due to battery failure. It has been on the craft for about 20 years and until today was working great. I am disappointed that the battery is not replaceable (anyone know a hack?) but otherwise have been very happy with it and will replace it with the same.
My tach has been in service for 4 years now and its still working well. I have a Lyc TIO540AF1B. We did have to cut a small opening in the shielding and then wound 10 turns over that opening (instructions recommended 3). It hasnt missed a beat since. Beats an optical tach as they dont work at night.
If you are building an experimental and would like to use this device, DO NOT buy it until the last days of your build. The battery only lasts 5 years and is NOT replaceable. After that, its a Tiny Boat anchor.
Battery died 2 weeks after install, no shorts in wires. Started acting up and changing rpm and an hour later stopped working. Not even a time used shows, junk. I bet they dont sell enough and are too old.
tiny tachs do not work
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.
Part number 10-04182 is a universal unit and can be programmed for your Lycoming engine.
No, this unit is not FAA TSO approved
The manufacturer does not recommend connecting to the P-lead. You must cut back the shield on the plug wires in order for this device to work properly.
Yes, it will.
Yes, the photo is representative of the unit for sale.
This comes standard with a 6 ft lead. Longer leads are available but they are special order. Please contact our sales department for pricing and lead time of a custom length lead on the TT2A.
You will want to set the Tiny Tach to 2 sparks per revolution.
This has two wires. One goes around a spark plug wire and the other grounds to the engine.