[Healeys] How Fast Does My Drive Shaft Spin??David -

[Per Schoerner]

Price
If you decide to tap the speed from the speedometer cable then you have 
the requested number on your speedometer, after the model number, 
probably SN 6125/22, you have the speedometer calibration number, 
probably 1000. That is the number of turns per mile for the speedometer 
to show 60 and advance the trip/odometers with one (mile). If you want 
to calculate for yourself the speedometer drive gear ratio is 3.2:1, 
e.g. for every 3.2 turns of the prop shaft the speedometer cable turns once.

Per

Price Lindsay skrev 2013-07-11 01:39:
> Thanks David -
>
> I'm installing the Rostra 250-1223. I have the magnetic speed generator. I
> also have the other type as well but the threads are too large to fit the
> angle drive (I presume its for an american car). Can I cut the cable and
> splice the generator in?  What do I need for this to work and where do I go to
> get it?
>
> Price Lindsay
> 67 BJ8