Uncle Jack wrote:
>Is the "A" superior to the "J" type for racing?
I have no direct experience, but like others, I have heard that
the A is faster shifting than the J. I have also heard that the
A leaks like a sieve and is more expensive to boot.
The biggest differences lie in the final ratios. Consider the
following table of final ratios for the A and J given a rear ratio
of 3.7:1
Gear A J
-----------------------------
1st 11.62 11.06
2nd 7.44 7.77
3rd 4.92 5.14
3rd O/D 3.92 4.10
4th 3.70 3.70
4th O/D 2.95 2.95
and for 4.1:1 rear:
Gear A J
------------------------------
1st 12.87 12.26
2nd 8.24 8.61
3rd 5.45 5.70
3rd O/D 4.35 4.54
4th 4.10 4.10
4th O/D 3.27 3.27
Text-based email is terrible for formatting, so I hope
that these tables look OK. If FOT moved to a more
modern HTML-based forum, then tables like this could
appear neat and organized (hint, hint).
As you can see, some gear-shifts involve some
pretty snappy (and impressive) coordinated changes
of both the gears and the O/D. E.g., changing from
3rd O/D to 4th; can you pat your head and rub your
tummy AND drive 100 mph at the same time?.
I swear, I don't know how JK Jackson does it in Solo.
Shane Ingate and the Flyin' J in Maryland
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