SPEEDO REVOLUTIONS PER MILE

Posted by Christopher On 2024/4/5 2:21:43

Hello again fellow Packard lovers
I have estimated the turns per mile the speedo cable makes is 1000 . I used a cordless drill torqued on to the cable with a white chalk mark on the chuck and it was easy to count the turns at low speed , I did this for the turnover of 6/10ths of a mile and for each of the 10ths the revs were 100 . I had read somewhere that someone thought the turns per mile was 1000 and it looks like thats correct . With that number , the tyre size and the diff ratio the correct gears can be worked out for the new R700 box . Thanks for your help and interest .

Chris.