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Posted by Wes on May 12, 2008, 5:40 am
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>Thanks, I just ordered a tiny tach. I don't like that it has a sealed
>battery and will only last 4-5 years and then need to be replaced, but
>that's the way everything is built now.
When the time comes, freeze the unit in the freezer overnight and give it a
rap along the sealing line in the morning and see if it cracks open easily.
Wes
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Posted by Bruce in Bangkok on May 12, 2008, 11:55 am
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On Sun, 11 May 2008 22:29:02 -0500, "Karl Townsend"
>
>> Tiny-tach or other secondary triggered tach connected to one plug
>> wire. Doesn't care how many cyls - there are 2 types - 2 stroke and 4
>> stroke. 2 stroke tach works with double ended coils, which are NOT
>> used on 3 cyl engines.
>
>Thanks, I just ordered a tiny tach. I don't like that it has a sealed
>battery and will only last 4-5 years and then need to be replaced, but
>that's the way everything is built now.
>
>Karl
>
I've seen an article somewhere on the web about changing the battery
and resetting the hour meter, but I don;t remember where...
Bruce-in-Bangkok
(correct Address is bpaige125atgmaildotcom)
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Posted by RoyJ on May 11, 2008, 10:32 pm
Please log in for more thread options Any of the inductively coupled tachs will work fine. They couple off of
a spark plug wire, you can initialize it for 2 cycle or 4 cycle
http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_524744_524744
Karl Townsend wrote:
> I'm looking for a tach. for my 3 cylinder ford tractor. looking for digital
> as I need to know whether the engine is running 1200 or 1300 rpm. The dial
> gauges that go to 10,000 rpm just don't have the resolution I need.
>
> They don't seem to make a tach for three cylinder engines. here's the best
> page of digital tachs. I've found: http://tinyurl.com/4lg6ru
>
> Is there an easy device to add to a tach set for six cylinders to actually
> read for a three? Some other idea?
>
> Karl
>
>
>
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Posted by Martin H. Eastburn on May 13, 2008, 12:53 am
Please log in for more thread options Seems like you would just double all the numbers on a 6 unit used on a 3
cylinder.
Martin
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/
RoyJ wrote:
> Any of the inductively coupled tachs will work fine. They couple off of
> a spark plug wire, you can initialize it for 2 cycle or 4 cycle
>
http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_524744_524744
>
>
> Karl Townsend wrote:
>> I'm looking for a tach. for my 3 cylinder ford tractor. looking for
>> digital as I need to know whether the engine is running 1200 or 1300
>> rpm. The dial gauges that go to 10,000 rpm just don't have the
>> resolution I need.
>>
>> They don't seem to make a tach for three cylinder engines. here's the
>> best page of digital tachs. I've found: http://tinyurl.com/4lg6ru
>>
>> Is there an easy device to add to a tach set for six cylinders to
>> actually read for a three? Some other idea?
>>
>> Karl
>>
>>
>>
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Posted by BillM on May 11, 2008, 10:33 pm
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"Karl Townsend"
message
> I'm looking for a tach. for my 3 cylinder ford
> tractor. looking for digital as I need to know
> whether the engine is running 1200 or 1300
> rpm. The dial gauges that go to 10,000 rpm
> just don't have the resolution I need.
>
> They don't seem to make a tach for three
> cylinder engines. here's the best page of
> digital tachs. I've found:
> http://tinyurl.com/4lg6ru
>
> Is there an easy device to add to a tach set
> for six cylinders to actually read for a
> three? Some other idea?
>
> Karl
There are a bunch of units out there that use
sources other than the ignition for tach
input. Does the tractor have an alternator?
Alternator tachs are common. Lots
of engines use a hall effect transducer reading
a magnet in the flywheel. I've even seen
one setup that used a proximity sensor reading
the fins on the generator fan.
What you are looking for seems to be more akin
to the readout on a stationary power unit.
Give the folks as Isspro in Portland OR a
call----(888) 447-7776. They are who I've
used for mobile equipment instrumentation for
years.
Bill
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>battery and will only last 4-5 years and then need to be replaced, but
>that's the way everything is built now.