Diesel Tach

[tlbeck1985]

Has anyone found a reasonably priced tach? I'm after the type that utilizes the alternator.

[turf]

i got one for $10 off of ebay. works fine!

http://www.ebay.com/itm/52mm-0-6000-...item35f0c13bbd


find the stator on the alternator and run the wire.






its not terribly accurate but relative is better than nothing.

[tlbeck1985]

Thanks man. Any idea how accurate it is though?

50 day shipping? I went to buy one and canceled it lol

[turf]

mine came in just a few days, pretty fast considering it came from china.

i don't have a way to calibrate mine yet. i just guess that idle is about 500 and redline is about 2700.

the dial stays in between the 2 mostly, but once it did read up in the 3000's. i let my foot off the pedal and than back on it again and it re-established at 2700.

there is a 3 way switch on the back of the tach to get it into the right range for the alternator, then there is a screw for fine tuning.

its close, well worth the $15. my next down hill run will will be more confident with the trans being able to hold a constant rpm number.

[Tango]

Not $10 bucks but quite accurate and easy to install on any diesel...

https://www.tinytach.com/diesel-tinytach

[tlbeck1985]

Dang, with the transducer that ends up being more expensive than an autometer gauge. https://www.summitracing.com/parts/atm-2888/overview/

[tlbeck1985]

In case anyone hasn't seen how they make your tach work off the alternator

https://www.youtube.com/watch?v=HhLPAPZxNsM