[Farmall] Tachometer

[E. John Puckett]

I don't think I made my self clear.  I didn't mean total number of times it saw 
the blades pass, rather the frequency of the passage.  If it did that when using 
a 3 bladed prop you would have to divide the readout by 3.

soffiler at myeastern.com wrote:

> I don't know but strongly suspect it reads RPM directly.  If
> it just counted the number of times the prop blade passed,
> you'd see nothing but an ever-increasing number on the
> readout as it passed by over and over and over.  That would
> be useless, unless you also had a stopwatch and froze the
> count reading at some particular point, then did the math. 
> I can't believe anyone would find something like that even
> remotely useful.  Therefore my hunch it reads RPM directly.
> 
> Steve O.
> 
> 
> From: "E. John Puckett" <ejpuckett at centurytel.net>
> To: Farmall/IHC mailing list
> <farmall at lists.antique-tractor.com>
> Subject: Re: [Farmall] Tachometer
> Date: Mon, 20 Dec 2004 07:47:16 -0600
> 
> ----- Original Message Follows -----
> 
>>I've been looking for something similar, but everything
>>I've found ran in the  $75 to $150 range.  Does it give a
>>reading of the number of times the prop blade  passes, or
>>is their a scale that changes the counts to rpm.  might
>>have to do a  little calculation to get rpm from a tractor
>>engine.
>>
>>Robert L. Holtzer wrote:
>>
>>> From time to time there has been discussion of setting
>>>engine idle,  etc.  Recently in a model airplane shop I
>>>saw a $25 tachometer that had  an RPM range of 0 to
>>>30,000.  It detected RPM from the propeller -- 
>>
>>apparently something akin to a strobe.  It would probably
>>
>>>work off a  painted mark on a crank pulley.
>>>
>>>Anyone have any experience with this type of equipment?
>>>
>>>Bob Holtzer
> 
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-- 
John
another one of them
*.?-!.* cub owners