New tacho & correct RPM

rafrover

rafrover

Member
Hi guys, very pleased with myself...being a complete novice I managed to swap out my Smith tacho which is no longer working with a brand called Veethree. Don't know if it's any good but it's what I can get from local auction site, Trademe. After reading from this forum and joining the 2 white cable together, removed the male and female bullets and changed them to 1 Lucar, the RPM needle is moving and I finally can see what RPM I am doing. However as I never had a working tacho from day one and relying only on the new tacho switch to calibrate it for 8 cycl, I can't tell if everything is calibrated properly. At the moment, doing 2K RPM, I get a speed of almost 80kmph. Anyone can verify that it's working properly?

Here's the website for the Veethree: http://www.veethree.com/alternator-driv ... eters.html

They had the 6K RPM but it was much smaller, so I went with the 8K RPM version and had to put it all back together without the rear metal casing.

Any thoughts welcome.
 
From the Workshop Manual, 1,000 engine RPM gives 38.5 KPH in 3rd gear on the auto box.

So your set up sounds about right for normal speedometer tolerances.

As an aside, if you like playing around with gearing/tyre scenarios, this free software's useful:

http://locost7.info/gearcalc.php

Stan
 
Re: New tacho & correct RPM

That tool is epic. Thx again for confirming my tacho works as it should. On now to tackle other things. :)
 
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