[ihc] two speed rear axles

["Allan W." <allanw@xxxxxxxxxxxxxxxxxxxx>]

>however, both the RA20 and RA25
>were available in a 2-speed.  the 2-speed version of the RA20 is the RA126,
>and i don't remember the number for the 2-speed RA25.  to make an RA20 into
>a 2-speed should be as simple as pulling the shafts and swapping
>differential carriers.

My '72 1210 owners manual has instructions for shifting the optional
2 speed rear axle.  At one time I thought they might have been an
option.  But, after locating some original price lists, I found that
was not the case for a 1210, or even a 1310.  The same owners manual
covers all the way through the 1510 series.

May 18, 1970 price list:
1300 Standard: RA-15 (rated 7500lb).  Optional: RA-63 (D70) $139.88 SRP
1500 Standard: RA-20 (rated 10000lb). Optional: RA-25 (12000lb) $67.25 SRP
1500 Optional:  RA-126 2 speed, $250.71 SRP
The RA-25 and RA-126 require 15x4" brake option and 20" wheels

1972 Price list
All the same, except prices slightly higher.

BTW, ratios for RA-25 are listed as 5.29, 6.17, 6.67, 7.17.  Also, these are
not available on the 4x4 units as the ratios don't match the available
front driving axles.

When I learned the ratios of the 2 speed and the 20" wheel requirement,
I decided these were not going to work for me.  Now if I could
find a 2 speed axle with, say 4.10 and 3.73 ratios....

Allan W.