An inaccurate tachometer can waste performance, fuel and engine life. Mechanical tachometers are notoriously inaccurate and should be checked at each annual and 100 hour inspection or any time aircraft performance is in question. The TruTach II Optical Digital Tachometer measures the true speed of your propeller from inside or outside the aircraft. Just point it at the propeller or rotor blades and TruTach II will directly display the rotational speed with a resolution of 1 RPM. No connection to aircraft systems is required and measurements may be made at any speed setting from 240 to 70000 RPM.
Direct display is available for 2, 3, 4, and 5 blade propellers. Digital Signall Processing assures rock-solid display in single and multi-engine aircraft as well as helicopters. The compact 4-inch instrument weighs just 4 ounces and may be used with fast turning ultra-lights and kit plane propellers. Just turn it on, select the number of propeller blades and point. Automatic shut-off turns the unit off if you forget. The Tru Tach II includes a standard 9 volt battery providing 150 hours of operation.
Works well, cant wait to try it out on all of my airplanes to see how far off the mechanical tachs are.
Works very well. A good cross check of my tachometer.
Works perfectly, as advertised. Shall, light, simple to calibrate, and easy to read.
Mounted it on the top of my Piper 140s dash with a piece of velcro. Works great, far more accurate than the old mechanical tach and gives me a sort of heads up display. Only two negatives (not really a fault of the unit). When the setting sun is from behind, the reflection off the windshield can cause it to read double the RPM. When the ambient light drops below a certain threshold (just after sunset) it can no longer read the RPM.
Works perfect.! Also it is easy to check calibration. Just point it at a fluorescent light bulb 3600 rpms!
Installed with velcro in less than 5 minutes. Works well.
Could not be easier. Literally, set it on the glareshield and it begins its readout almost immediately. Confirmed our two different RPM readouts in the aircraft and now we know which one is more accurate. If you want a simple, effective means of validating prop RPM this is it.
Very accurate readings. Good value!
This product works exactly as advertised. Very pleased. I tried a $30 optical tachometer from the internet. Total failure. Got this, checked calibration with a fluorescent bulb as instructed by mfg. It varied +/- 2 rpm (precision better than 0.001%). Got in the airplane and pointed it at the propeller. In 1-2 seconds, I got the propeller RPM. Also, very simple to change to correct number of prop blades.
Product worked perfect.
The dimensions are 2-1/4" W x 1-7/16 H x 3-3/4" D. This product in not meant to be installed in a panel.
The Trutach II Optical Digital Tachometer is packaged inside of a box.
No, the Trutach II will store the desired number of blades and start with this input every time.
The Trutach II is able to monitor changes in RPM and display them in real time. There is no need to turn the instrument off during flight.
Per Trutach: The only calibration available is to switch from 2-5 prop blades.
Yes, the Trutach II is intended to be put on the glare shield for prop reading.
This unit is not FAA / EASA approved since it is not intended to be installed in a panel. You will still need to keep an approved panel mount tachometer.
No certifications are available for part # 10-01021.