Maybe Seabisciut, does not need a Ruckstell as he takes on Tenney Hill Road, a dirt road all the way to the top in direct drive (high gear), a total distance 1.38 miles, average grade 5%, with as much as 8% grade in some places, total time 3:27 minutes.
This is what the “Why you should have a Ruckstell Axle” booklet says:
THE Ruckstell Axle is a simple, fool proof gear shift built into the rear axle.
It requires no adjustments and is lubricated with the same oil with which the rear axle is lubricated.
As a result of installing a Ruckstell Axle, the Ford is provided with the following six speeds :
l-The usual FORD HIGH (or fourth),
2-Ruckstell Intermediate High (or third),
3-The usual FORD LOW (or second),
4-Ruckstell Emergency Low (or first),
5-The usual FORD REVERSE, and
6-Ruckstell Emergency Reverse.
Thus, the usual number of speeds is doubled, giving one reduction speed lower than each corresponding Ford speed. This total of six changes of gear provides for all the emergencies of driving generally encountered. It overcomes the difficulties of driving in heavy traffic; it furnishes the necessary additional power for hill climbing, hauling big loads and heavy going through bad roads; it improves the braking efficiency and increases the road speed.
"CHANGING from Ford speeds to Ruckstell speeds is accomplished instantly by merely slipping the clutch pedal and moving the shifting lever back,
with a quick snap-the quicker the better.
There is no danger of stripping gears, as, unlike the usual selective type of automobile gearing, the Ruckstell
gears are always in mesh. Changing can be accomplished regardless of engine speed, without injuring the gears. No matter how fast you are
travelling, perfect shifting is easy. Your car is always in FORD SPEEDS when the LEVER is FORWARD, RUCKSTELL SPEEDS when the LEVER is BACK.