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Gearboxes
Vintage Racing with a “Ribcase” transmission
Created: April 19, 2018
The world of Vintage racers seem to be ever expanding and so does the use of the venerable Ribcase transmission. A set of Close Ratio Straight cut gears can make a big difference in performance and driving pleasure.
Common Ribcase transmission problems
Created: April 24, 2014
The "Ribcase" acronym for the gearbox as found as stock in most later '60's and '70's. The original design parameters were conceived around a small displacement low torque and horsepower engine and the "Smooth-case" transmission. The demands on this gearbox were well within design limits. Over the years the engines got bigger and bigger as did the weight of the cars they were installed in.
Limited Slip Differentials, C-BTA1226
Created: January 30, 2000
When most folk talk about limited slip differentials for cars with a BMC rear end, the minds immediately turn to the "Salisbury". Indeed many think that word covers any LSD for a BMC. This of course is not so. The Salisbury diff was designed in the 50's at a time when race cars were not sophisticated, tires were usually crossply with limited grip due to port compounds, and tracks were more than a little bumpy. Agriculturally built cars needed diffs built along similar lines. High static loads were more than common to help compensate for shortfalls in chassis and tire design -