Q for carazy merredin of wa RE: black box

Chris.
There is a better way to solve your problem, in the gear box extension housing there is a toothed wheel that provides the pulses for the speedo, just slip of the exstension and swop over the wheels or count the no of teeth and make a new one. Eric.

Chris, it does work-I've done about 5k so far no problems. I got the speed & odommeter spot on. Real easy to install, there are only four wires-power, earth, speed signal in to the black box & speed signal out of the black box. Took a bit of nutting out which speed sensor wires to cut & solder in, but once this was done was piece of cake. Just sat black box on my leg & adjusted screw untill my speed was the same as the gps. I had about 40 km/hr range to play with. If yours is electronic this is the way to go as it is adjustable. Changing output shaft speed gears is time consuming, you may not be able to get the right ratio & hence speedo reading. Any auto sparky could fit it for you 1-1.5 hours-if that.
The black box is about the size of a pack of playing cards. On the sticker is says RATIO BOX APRA 1.00/D
I hope this helps-Carazy.

G'day
Thanks for the info, I will contact Tisco again. The box sound just what I want. My experience with changing gears is it is time consuming and not necessarily accurate. And if you change tyre size, you have to do it again.
I will let you know how I get on.

Regards
Chris