Tach for a 1969 25hp Johnson non- electric start...

[dfrants]

what kind of tach do I need that will work on a 1969 25hp Johnson tiller?, model no. 25R69D. looking to test some props and want to see the rpms she hits.

 

[jasper60103]

what kind of tach do I need that will work on a 1969 25hp Johnson tiller?, model no. 25R69D. looking to test some props and want to see the rpms she hits.

A tiny tach or equivalent will work.

 

[Joe Reeves]

Just in case you're not familiar with the term..... Jasper isn't describing any ole tiny tach..... "Tiny Tach" is the name of it.

 

[oldboat1]

I bought one of these: Neiko 20713A Digital Tachometer. Non contact Laser Photo.. Seems to work well on just about anything that spins! (Used it to check the boat tach readings.)

 

[dfrants]

I looked at a couple of tiny tachs on line and they say that they have an internal battery that only lasts two years and can't be replaced??? Is this correct?

 

[kbait]

I bought a Chinese cheapo tiny-type tach 3 yrs ago with internal battery for $10 or so. Still working fine.

 

[dfrants]

I see there are several different Tiny Tach models. Some models are "R" and some are "NR". is there a preferred one for outboards?

 

[F_R]

If I were buying one (I'm not), I would be seriously considering the non-contact laser-type. Matter of fact, on second thought, I may look into one for using on my machine tools.