welding a diff

[Dr-X]

Diffs and gboxes whine in reverse. gboxes because of straight cut gears, and diffs because the gears are cut on an angle designed for forward movement (there is a term for this, but I forget it ), so the crownwheel and pinion 'scrape' a it in reverse.

[Fuel]

JA's have straight cut reverse gear.

JB has reverse in the same style as the other gears (I assume JD is the same)

So it is easier to get it in reverse, and i dont think it makes any noise.