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electric tach for vac


 
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kenbob
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PostPosted: Wed Nov 23, 2022 7:12 am    Post subject: electric tach for vac Reply to specific post Reply with quote

I was thinking of buying an electric tach for my vac. It is still 6v pos. There are all kinds of cheap tachs out there. Has anyone used one?
Since they are battery powered it would seem the 6v pos wouldn't make a difference, but I would like to know if that is not true. Thanks.
 
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Dingo3
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PostPosted: Wed Nov 23, 2022 11:43 am    Post subject: Re: electric tach for vac Reply to specific post Reply with quote

You cant use a 12v tach on 6v without a converter of some type.
Look up Westach, they have them. Dont know how good they are, Ive never used one.
 
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kenbob
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PostPosted: Wed Nov 23, 2022 11:59 am    Post subject: Re: electric tach for vac Reply to specific post Reply with quote

The ones I was considering were digital and operated with their own battery as power source. One wire that wrapped around the outside of a sparkplug wire as a sensor.
 
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Dingo3
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PostPosted: Wed Nov 23, 2022 12:25 pm    Post subject: Re: electric tach for vac Reply to specific post Reply with quote

That would work. Does it need a source for the light?
 
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kenbob
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PostPosted: Wed Nov 23, 2022 5:51 pm    Post subject: Re: electric tach for vac Reply to specific post Reply with quote

No, it supposedly picks up the vibration thru the sparkplug wire. What I can't figure out so far from the online ads if they can be used on a 4 cyl tractor. They are mostly for single or twins. I suppose if it reads the pulses you could figure out rpms
 
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Al nickel
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PostPosted: Thu Nov 24, 2022 4:34 am    Post subject: Re: electric tach for vac Reply to specific post Reply with quote

What is the value of a tach on a Case Vac??

Maybe , just let the idea go ??
 
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kenbob
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PostPosted: Thu Nov 24, 2022 6:15 am    Post subject: Re: electric tach for vac Reply to specific post Reply with quote

For 13 dollars I have ordered one. Mainly for tuning purposes as I have no idea if the tractor is set and running at the normal rpms. Something isn't quite right with it. I found one you set for number of cylinders and you can set it serves as a resettable hour meter as well. Mostly i need a new toy I guess. I will post after I get it to see if it is worth the $13
 
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kenbob
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PostPosted: Thu Nov 24, 2022 6:18 am    Post subject: Re: electric tach for vac Reply to specific post Reply with quote

Actually I ended up paying $22 for one with lifetime warranty and made in Tiawan instead of China.
 
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DKase
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PostPosted: Thu Nov 24, 2022 8:43 am    Post subject: Re: electric tach for vac Reply to specific post Reply with quote

one cyl, or 16 cyl makes no difference. spark fires once every 2 turns on a spark plug wire.
 
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kenbob
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PostPosted: Thu Nov 24, 2022 7:21 pm    Post subject: Re: electric tach for vac Reply to specific post Reply with quote

Thanks
 
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