Diff ratio
In the user handbook issued Jan 1958, it gives 6.8 to 1 ratio.
There is no ratio given in the 1965 Service manual, but the R series parts list issued in 1971 has several diff options (ie superceded ones) but all at 5/34 = 6.8:1
i am aware of someone with a 1969 civilian model, ex-power board, who found the RL diff didn't fit it. I don't know what the problem was.
hope that helps.
Rob
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