Anyone Every Used one of These for a Tach sender?

[lmichael]

Diesel Engine Tach Adapter RPM Signal Sensor For Motorcycle ATV UTV Boat Yacht 759117946977 | eBay

Did it work with any tach?

 

[cthomas]

I would not trust it, the ad says it works on chainsaws. Just mount on alternator, I have never seen a chainsaw with an alternator. The same goes for motorcycles. My brother installed something on his Pasquali tractor(one cylinder air cooled diesel tractor with no alternator) I will check with him and see what he used.

 

[GreensvilleJay]

tiny-tach also make/sell them for $125 but with display.
the epay unit is JUST the 'sensor'
the 'tech' inside the box is 'solid' even if the ad's use of English is poor.

 

[Kubota Newbie]

Diesel Engine Tach Adapter RPM Signal Sensor For Motorcycle ATV UTV Boat Yacht 759117946977 | eBay

Did it work with any tach?

It's probably going to give you a signal, but not all tachs use the same signal. When the electronic advance ignition system on my CH25 in my Simplicity Legacy took a dump I had to change it out to the redesign replacement parts that Kohler switched to. Which of course did not include a tach output. Tried something similar to that, it wouldn't run the tach. (Yes I tested the tach with another output signal system and I knew it worked).

 

[Daren Todd]

It's probably going to give you a signal, but not all tachs use the same signal. When the electronic advance ignition system on my CH25 in my Simplicity Legacy took a dump I had to change it out to the redesign replacement parts that Kohler switched to. Which of course did not include a tach output. Tried something similar to that, it wouldn't run the tach. (Yes I tested the tach with another output signal system and I knew it worked).

Depending on the electronic tach.... some have a dip switch, others have pins on the back with with a little jumper to connect two of the pins.

On the one with the pins, moving the jumper to a different set of pins changes the number of pulses that the tach is looking for. If you don't know the pulse count, then you move to another set of pins till that tach reads your closest estimate of low and high rpms.

Same with the dip switch settings. Switching the dip switches changes the pulse count.

 

[lmichael]

I thought about the Tiny Tach, but I abhor digital readouts. I like an analogue display. I see many tachs shown as "diesel" tachs but all with the disclaimer of needing a signal. Any moving magnetic field (like the alternator) should supply the signal(s). If I did it I planned on calibrating it with one of these
Amazon.com: Digital Photo Laser Tachometer Non Contact Tach RPM Meter : Industrial & Scientific

 

[GeoHorn]

the epay unit is JUST the 'sensor'
.

Did you notice the Subject-Line of this Thread, per chance…?

 

[lmichael]

Well I ordered the laser tach. At least I am part way to my goal of adding a tach. Still unsure if I will get one of these sensors that go on the alternator or one that is magnetic where you have to install a magnet and get the sensor close to the magnet.
I know a TinyTac will do the job. I'm just averse to digital stuff. Just don't like it

 

[GreensvilleJay]

after scanning the web..( DR01 ). you can buy from $27-$95...
from one seller's page...
1. How does it work?
It senses magnet signal change when vehicle original alternator is running, then then output 9v pulse for all types of Tachometer/RPM Gauge

2. Features & Specifications:
- Compatible with all types of Diesel/Gasoline Engine
- Easy Installation, no breaking cable, no need CANBUS/OBD
- Output TACH ratio: 4pulses/round
- IP67 Waterproof
- Mini Size with Play & Plug design
- Power supply: 9-36V DC

haven't seen the real instruction sheet but the 'specs' are well, weird...
seems it output 4 pulses per rev, though HOW that happens is a mystery.(most alts are 3phase devices...).. some info about 'alternator signal'.

as for 'compatibility', you'ld have to KNOW your tach requires a 4 pulse per rev input signal of only 9 volts.

 

[lmichael]

after scanning the web..( DR01 ). you can buy from $27-$95...
from one seller's page...
1. How does it work?
It senses magnet signal change when vehicle original alternator is running, then then output 9v pulse for all types of Tachometer/RPM Gauge

2. Features & Specifications:
- Compatible with all types of Diesel/Gasoline Engine
- Easy Installation, no breaking cable, no need CANBUS/OBD
- Output TACH ratio: 4pulses/round
- IP67 Waterproof
- Mini Size with Play & Plug design
- Power supply: 9-36V DC

haven't seen the real instruction sheet but the 'specs' are well, weird...
seems it output 4 pulses per rev, though HOW that happens is a mystery.(most alts are 3phase devices...).. some info about 'alternator signal'.

as for 'compatibility', you'ld have to KNOW your tach requires a 4 pulse per rev input signal of only 9 volts.

So does this mean if you buy a tach that uses a magnetic pulse it will not work with these sensors? Not making an argument. Actually a little cornfused on the whole thing