GM> -=> Jay Emrie said to Greg Mayman
GM> -=> about "ALTERNATOR RATINGS" on 01-20-03  21:32.....

GM> JE> I toe a 34' travel trailer with a Chevy PU - automatic
GM> JE> transmission. It has a tach which is very valuable when I
GM> JE> start going up steep grades. Watching the tach prevents me
GM> JE> from over revving the engine. From overdrive it
GM> JE> automatically down shifts without over revving. From 3rd on
GM> JE> down I have to watch it. Wouldn't be without it!

GM>Hmmm... it seems to me that three LEDs would do the job -- a
GM>green one to show the engine was running, and a couple of red
GM>ones to show when the engine was under or over speed.

Sure, that would suffice, but why go to all that
trouble - once you have built the circuitry to make the
over/under RPM leds function you have built a tach!
Besides, my PU came equipped with the tach from the factory
and I purchased it used.

GM>But LEDs on the dash wouldn't have the same attraction for
GM>customers that a dial-type tacho gives ;-)

GM>As I said to someone else, I've never owned a vehicle where I
GM>couldn't hear the engine and judge how it was going by the sound,
GM>so I'm not really equipped to comment 


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