On 1/2/2020 4:46 PM, Anthony Rhodes wrote:
> Hmmm. 3K rpm at 60 MPH is about what my 4th gear is on my non-OD
> tranny. Â Â I would have thought that the Miata 5th gear might have
> been â??directâ??, like the TRâ??s 4th. And 6th would be some sort of
> overdrive.
>
> Without having 20-30% overdrive then there is no great advantage to
> the Miata unit!
>
Umm, the final drive depends upon the rear end ratio, which must be
higher in the Miata than the TR. In fact, the old Miata 6-speeds (circa
`93 or so) had a quite numerically high Ist and a quite low 6th, making
them ideal for running numerically low rear ends, if revs/mile is a concern.
This one is advertised as having a 0.814 5th gear, which would put it in
your ballpark.
Cheers.
--
Michael Porter
Roswell, NM
Never let anyone drive you crazy when you know it's within walking distance....
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