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nordic95 10-19-2011 01:08 PM

Outboard motor ??
 
I have a 1976 35 hp Johnson outboard with pull start. So there is no electric at all on the motor. Is there anyway to hook up a tach?

Anthony

picklenjim 10-19-2011 02:53 PM

Check over here. You will probably get more replies.
http://forums.iboats.com/forumdisplay.php?f=24

SB 10-20-2011 01:01 PM

Back in the day, lots of people would install these on their 2 cycle snowmobiles, lawnmowers, etc,etc. Can get as just a tach or hourmeter and tach.

http://www.tinytach.com/tinytach/gasoline.php

mcollinstn 10-20-2011 04:55 PM

Are you SURE your motor doesn't have a charging stator? Even a pullstart motor of that vintage might still have one.

Outboard tachs usually run off of the 12-pole charging stator.
I did have an old 33hp Evinrude that had an external generator for charging. I tapped into the coil trigger, and set a car tach to "4 cyl" mode. It would read 50% of what the motor was turning.

(each cylinder of a 2 stroke motor fires every rev - a 4 stroke 4 cylinder fires twice each rev).

TinyTach works okay, but I've had several of the cheap ones go bad pretty quickly.

nordic95 10-20-2011 08:44 PM

No charging coil at all. Just two black wire leave motor and they go to the cut off switch. So Im assuming no charging capailities cause I thought the same thing. This is a 2 cylinder 2 stroke motor. Do they make a tach with a pick up wire that can be wrapped around a plug wire, like a timing light pick up?


Anthony

mcollinstn 10-21-2011 03:07 PM


Originally Posted by nordic95 (Post 3532723)
Do they make a tach with a pick up wire that can be wrapped around a plug wire, like a timing light pick up?

See the link above for the TinyTach. It wraps around the plug wire just as you describe.

But HEY, I just found this:

http://www.cartpartsplus.com/tachometer-dial-type.html

It'll work.

MC


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