The order arrived fine, a bit of trouble with the tracking, but that's a package deal. Having a tachometer is a fundamental tool for any model aircraft that has nitro or gasser engines to better carbure the engines. I haven't tried it yet but I've already had other products of this brand and I've never had any problems. I recommend having one among the basic hobby tool

El pedido llegó bien, un poco de problemas con el rastreo pero eso es cosa de la paquete ría. Tener un tacómetro es una herramienta fundamental para cualquier aeromodelista que tenga motores nitro o gasser para carburar mejor los motores. Aún no lo pruebo pero ya he tenido otros productos de esta marca y nunca he tenido ningún problema. Recomiendo tener uno entre la herramienta básica del hobby

The order arrived fine, a bit of trouble with the tracking, but that's a package deal. Having a tachometer is a fundamental tool for any model aircraft that has nitro or gasser engines to better carbure the engines. I haven't tried it yet but I've already had other products of this brand and I've never had any problems. I recommend having one among the basic hobby tool

the battery that was in the device was flat but you get an extra one in the packet. just need to unscrew the 4 screws and take off the bottom cover and replace the battery. the one button puts it on and the other one you can select from 2 to 9 blades to measure the rpm. good product banggood!

the battery that was in the device was flat but you get an extra one in the packet. just need to unscrew the 4 screws and take off the bottom cover and replace the battery. the one button puts it on and the other one you can select from 2 to 9 blades to measure the rpm. good product banggood!

the battery that was in the device was flat but you get an extra one in the packet. just need to unscrew the 4 screws and take off the bottom cover and replace the battery. the one button puts it on and the other one you can select from 2 to 9 blades to measure the rpm. good product banggood!

Excellent tachometer and very accurate. Make the test with a neon tube. Set the tachometer on "2 blades" and point it toward a single neon tube. It will indicate exactly 3000 RPM. The tube is fed with 220 V AC 50Hz. That means 3000 cycles per minute and that means 6000 lightnings per minutes (and 6000 switching off). The instrument is set on "2 blades", so it will indicate 6000/2 = 3000. And if you set it on "6 blades" it will indicate 1000 RPM. A very good tachometer indeed.

Excellent tachometer and very accurate. Make the test with a neon tube. Set the tachometer on "2 blades" and point it toward a single neon tube. It will indicate exactly 3000 RPM. The tube is fed with 220 V AC 50Hz. That means 3000 cycles per minute and that means 6000 lightnings per minutes (and 6000 switching off). The instrument is set on "2 blades", so it will indicate 6000/2 = 3000. And if you set it on "6 blades" it will indicate 1000 RPM. A very good tachometer indeed.

Excellent tachometer and very accurate. Make the test with a neon tube. Set the tachometer on "2 blades" and point it toward a single neon tube. It will indicate exactly 3000 RPM. The tube is fed with 220 V AC 50Hz. That means 3000 cycles per minute and that means 6000 lightnings per minutes (and 6000 switching off). The instrument is set on "2 blades", so it will indicate 6000/2 = 3000. And if you set it on "6 blades" it will indicate 1000 RPM. A very good tachometer indeed.

It works and seems to be in the right ball park, but of course it’s hard to know just how accurate it is without something to check it against. Since it is photo-optical, it relies on being able to see the contrast between the prop passing in front of it and the background beyond. Keep in mind that for accuracy, the “background” light source should be constant and stable, preferably the sun, since it will see the flicker of intermittent lights like florescent, LED, etc. The little round plastic end piece houses a small plastic lens that must be pointed at the spinning prop within 10cm distance, which means leaving the 40cm strap attached is probably a bad idea! The piece just “snaps” on and mine arrived cracked so that it easily falls off dropping the lens. I had to put a piece of tape around it. Otherwise, the rest of the unit is pretty solid. Either button turns it on, long-press Set button turns on blue backlight. LCD is clearest from a little below center view since it goes from hard to read at center to impossible to read from above. Oh, and it actually weighs 45g without the death strap. It does the job, no mental math necessary like with generic RPM meters, it’s OK for what it is.

It works and seems to be in the right ball park, but of course it’s hard to know just how accurate it is without something to check it against. Since it is photo-optical, it relies on being able to see the contrast between the prop passing in front of it and the background beyond. Keep in mind that for accuracy, the “background” light source should be constant and stable, preferably the sun, since it will see the flicker of intermittent lights like florescent, LED, etc. The little round plastic end piece houses a small plastic lens that must be pointed at the spinning prop within 10cm distance, which means leaving the 40cm strap attached is probably a bad idea! The piece just “snaps” on and mine arrived cracked so that it easily falls off dropping the lens. I had to put a piece of tape around it. Otherwise, the rest of the unit is pretty solid. Either button turns it on, long-press Set button turns on blue backlight. LCD is clearest from a little below center view since it goes from hard to read at center to impossible to read from above. Oh, and it actually weighs 45g without the death strap. It does the job, no mental math necessary like with generic RPM meters, it’s OK for what it is.

It works and seems to be in the right ball park, but of course it’s hard to know just how accurate it is without something to check it against. Since it is photo-optical, it relies on being able to see the contrast between the prop passing in front of it and the background beyond. Keep in mind that for accuracy, the “background” light source should be constant and stable, preferably the sun, since it will see the flicker of intermittent lights like florescent, LED, etc. The little round plastic end piece houses a small plastic lens that must be pointed at the spinning prop within 10cm distance, which means leaving the 40cm strap attached is probably a bad idea! The piece just “snaps” on and mine arrived cracked so that it easily falls off dropping the lens. I had to put a piece of tape around it. Otherwise, the rest of the unit is pretty solid. Either button turns it on, long-press Set button turns on blue backlight. LCD is clearest from a little below center view since it goes from hard to read at center to impossible to read from above. Oh, and it actually weighs 45g without the death strap. It does the job, no mental math necessary like with generic RPM meters, it’s OK for what it is.

Blue backlight is cool!

Blue backlight is cool!

Blue backlight is cool!

Ok!

Ok!

Ok!

Produto de excelente qualidade.

Produto de excelente qualidade.

Produto de excelente qualidade.

Seems to work well. Select number of blades, then point at prop/rotor and take reading. Very easy and seems to be accurate. I dont care for the power button placement and battery location. It's very easy to accidentally press the power button, such as when it's in my toolbox. Must unscrew back plate to access battery (no separate battery compartment lid). Takes CR2032 button cell, which are expensive, so accidental power on and battery drain is a concern. I plan to 3D print a storage case

Seems to work well. Select number of blades, then point at prop/rotor and take reading. Very easy and seems to be accurate. I dont care for the power button placement and battery location. It's very easy to accidentally press the power button, such as when it's in my toolbox. Must unscrew back plate to access battery (no separate battery compartment lid). Takes CR2032 button cell, which are expensive, so accidental power on and battery drain is a concern. I plan to 3D print a storage case

Seems to work well. Select number of blades, then point at prop/rotor and take reading. Very easy and seems to be accurate. I dont care for the power button placement and battery location. It's very easy to accidentally press the power button, such as when it's in my toolbox. Must unscrew back plate to access battery (no separate battery compartment lid). Takes CR2032 button cell, which are expensive, so accidental power on and battery drain is a concern. I plan to 3D print a storage case

I'm relatively satisfied with the quality ot the tachometer. The accuracy depends on the distance from the propelers. Nice product with fast delivery. I recommend!

I'm relatively satisfied with the quality ot the tachometer. The accuracy depends on the distance from the propelers. Nice product with fast delivery. I recommend!

I'm relatively satisfied with the quality ot the tachometer. The accuracy depends on the distance from the propelers. Nice product with fast delivery. I recommend!

got this in 2-3 wks. good packing and arrived in normal condition, bnot damaged. v usefull tool as this is my second tach meter. will use it to measure rpm for my gasser planes and fbl helis.

got this in 2-3 wks. good packing and arrived in normal condition, bnot damaged. v usefull tool as this is my second tach meter. will use it to measure rpm for my gasser planes and fbl helis.

got this in 2-3 wks. good packing and arrived in normal condition, bnot damaged. v usefull tool as this is my second tach meter. will use it to measure rpm for my gasser planes and fbl helis.