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+--- Thread: Low Curiosity Index (/showthread.php?tid=2769)
Low Curiosity Index - Chris KC - 08-05-2019
So, 30-odd years after fitting it in the dash, it occurred to me that perhaps my Smiths MA rev counter actually works? If only it was connected to something.
It's a 4:1 unit though, and while I'm familiar with the method of driving off the end of the distributor, if it won't indicate correct speed then I wouldn't bother.
I understand Ulsters ran the tacho off the front cam gear, in fact I've got an external photo of the connection; but this looks like something that wouldn't be easy to set up on a standard (3-brg) engine without a few special parts.
So my question simply - is there a relatively easy way to drive a mechanical 4:1 tachometer from a standard A7 engine and get the correct indication at the dial?
RE: Low Curiosity Index - Stuart Giles - 08-05-2019
Shouldn't be too difficult to adapt one of these to drive from the bottom of the distributor shaft. http://www.gaggs.co.uk/html/tachometers.html
RE: Low Curiosity Index - Chris KC - 08-05-2019
Interesting option - thanks Stuart.
RE: Low Curiosity Index - Alan - 08-05-2019
Talk to Speedograph Richfield. I think they have what you need.
RE: Low Curiosity Index - Chris KC - 08-05-2019
Cheers Alan