TD real axle grear ratio

["Lani Spahr" <lani_spahr@agilent.com>]

I'm going to take advantage of a Moss Motors sale and buy the kit to fit a
lower ratio rear axle into my 51 TD. My question is this: when cruising now
I run around 3500 rpm at 50 mph. What kind of decrease of rpm can I expect
with the 4.55:1 ration from Moss at 50mph? Secondly, it this a straight
ratio calculation? By this I mean:

4.55/5.125 = 0.8878 thus 3500 * 0.8878 = 3107 rpm

Cheers,
Lani Spahr 1951 TD #5550

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