How do you determine what gear ratio you have? Sages will tell you to look for numbers on the case, which is great if: a. If you block one, the other wheel spins twice as quickly. When driving, this allows the wheel on the inside of a turn to rotate slower than the one on the outside of the turn. With the transmission in neutral, rotate the unblocked wheel two full turns and note how many times the pinion flange of the differential rotates. Marking the wheel and flange with a white marker helps keep track of the rotations. The number of turns is the gear ratio, which is called out as number of turns of the differential pinion to one turn of the axle.
The Highs and Lows of Differential Gear Ratios
Differential, Sprite & Midget, Morris Minor, Rebui
First, read Section H of the Bentley Midget workshop manual. These notes are meant as a supplement to the workshop manual. You can buy them on Amazon here:. If you have a huge freeplay between your ring and pinion, it is likely due to failed pinion bearings or failed thrust washers. But, if the gear teeth all look very good no dull spots, no chips, no scouring , it might be worth the effort. Universal leverage thingy, made from a length of 1.
The Austin-Healey Experience
Having trouble posting or changing forum settings? The Austin-Healey Experience www. Posted by bencollins. Right we all know the standard diff is too revvy for todays driving - there were no motorways when the sprite Mk1 was built. So there are Midget diffs and even new replacement crown gear to 3.
This is the sought after ratio for Sprite and Midget owners who want to reduce engine revs at freeway speeds. This eased the engines revs at speed and provided These differentials are rebuilt with all new bearings, cross pins, thrusts, collasible spacer, and seals.