Originally Posted by
mario r h santos I think I got it Graham. What I think is a shaft, in reality are two independent ones rotating on the exact same axis and what I think are four pairs of gears are in fact three because one of them is (des)multiplying the others as per your explanation. Fourth gear has no gears, simply has synchro hub (???) That locks both shafts together. Am I in the ballpark of your explanation Graham? Conclusion: best way to figure the ratios is to simply rotate input shaft by hand and count how many times the output shaft turns. Cheers and thanks a lot, Mário Santos.
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