[Healeys] Tachometer test

[i erbs]

Thanks.
Appreciate the correction.
Cheers

On Dec 24, 2017 6:17 PM, "Bob Haskell" <rchaskell at earthlink.net> wrote:

> Ira,
>
> BJ8 tach is electrical, no cable from the distributor drive.  So you would
> need to simulate the primary circuit through the induction coil of the
> tachometer.
>
> Just guessing, a zero to 12 volt square wave at a frequency of something
> like:
>
>    3000 engine rev/min   1 dizzy revolution
>    ------------------- * ------------------- * 6 cylinder  = 150 Hz.
>      60 sec/min          2 engine revolution
>
> As Kees suggested - in a car would probably be easier.
>
> Cheers,
>
> Bob Haskell
> AHCA 3000 MkI registrar
> http://www.ciahc.org/registry_3000mk1.php
>
> On 12/24/2017 06:41 PM, i erbs wrote:
>
>> Drill motor connected to cable. Or just spin the cable with your fingers
>> to detect movement. If it spins,  could be  angle drive or bad cable.
>>
>> On Dec 24, 2017 3:08 PM, "Bruce Peters" <rv9aplane at gmail.com <mailto:
>> rv9aplane at gmail.com>> wrote:
>>
>>     How does one go about testing a tachometer (‘67 BJ8) to see if it’s
>>     functional?
>>
>>     Thanks and Merry Christmas!
>>
>>     Bruce
>>
>>     Sent from my iPad
>>     _______________________________________________
>>
>
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