[Farmall] Tachometer

[Robert L. Holtzer]

The electronic ones are of interest.  Price a bit more than the model 
airplane unit but would not be much of a deterrent.  They are less 
portable, however.  This wouldn't be much of a problem if used only 
occasionally to set idle or such.  The mechanicals unit always entail 
getting a good, non-hazardous place for contact -- avoiding fan blades, 
etc.  Admittedly it would be nice to have one for a variety of shop uses!

Bob Holtzer

At 03:48 PM 12/20/2004 -0500, you wrote:
>Here are some ways of getting RPM
>
>The easiest is the new maintenance meters.  One lead to one spark 
>plug.  That is all. no connections to the battery so it doesn't care if it 
>is 6 or 12 volt
>http://www2.northerntool.com/product-1/524744.htm
>http://www.jackssmallengines.com/hour_meter.cfm
>These are on Ebay.  Look for  Hour Meter
>
>For more fun, there are the mechanical ones.
>there are always Jones tachs on ebay.  here is one.
>http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=45127788 
>57&category=6755&sspagename=WDVW
>
>If you can get at the end of a shaft look at
>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=4678&item=3861888269 
>&rd=1
>or
>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=63945&item=386139411 
>5&rd=1
>
>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=4122&item=6139182196 
>&rd=1
>
>Frank
>
>At 11:17 AM 12/20/2004, you wrote:
>
>>I haven't seen it operate, John.  It had an LCD screen.  Whether or not 
>>some conversion factor would be needed I don't know.  Maybe a prop could 
>>be mounted on the end of the crank (just kidding!!!).  I'll have to take 
>>another look at the device.  My interest was in the RPM range and price.
>>
>>Bob Holtzer
>>
>>At 07:47 AM 12/20/2004 -0600, you wrote:
>>>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
>>>>
>>>>_______________________________________________
>>>>Farmall mailing list
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>>>
>>>--
>>>John
>>>another one of them
>>>*.?-!.* cub owners
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>>
>>
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