Thread: Holy Diff

if your ratio comes out as 3.54:1 as opposed to 4.7:1 and you want to go back to 4.7:1 I can possabley help you out.

Hmm, I must have counted wrong, my crown-wheel has 47 teeth and the pinion 16. 47/16 = 2.9375... what am I doing wrong!?

Originally Posted by TeZZaP

Hmm, I must have counted wrong, my crown-wheel has 47 teeth and the pinion 16. 47/16 = 2.9375... what am I doing wrong!?

Count how many times the tailshaft turns (this is the pinion side) to turn the axle 10 times (this the crown side)
Mark a line on tailshaft & Mark a line on wheel so you can line up & count turns on each item

should work out to

(example) 47.0 turns of pinion to 10 turns crown= 4.7 to 1
(example) 35.4 turns of pinion to 10 turns crown = 3.54 to 1

Gives a idea of what you have without having to rip out diffs

OK, sorted, its 4.7:1

Thanks all for your input.

Do you think it's worth popping a couple of bolts into those holes to stop them filling with crap?

No, not necessary, Regards Frank.

Originally Posted by mike 90 RR

Count how many times the tailshaft turns (this is the pinion side) to turn the axle 10 times (this the crown side)
Mark a line on tailshaft & Mark a line on wheel so you can line up & count turns on each item

should work out to

(example) 47.0 turns of pinion to 10 turns crown= 4.7 to 1
(example) 35.4 turns of pinion to 10 turns crown = 3.54 to 1

Gives a idea of what you have without having to rip out diffs

Ummm, no it won't enless you either

A. lock the centre.........if your a lucky boy
B. turn BOTH axles the same amount of times

Turning one wheel will be a figure, double of that found by turning both axles, and any differential action that isn;t accounted for, will muff it up aswell

Originally Posted by rovercare

Ummm, no it won't enless you either

A. lock the centre.........if your a lucky boy
B. turn BOTH axles the same amount of times

Turning one wheel will be a figure, double of that found by turning both axles, and any differential action that isn;t accounted for, will muff it up aswell

Now ya got my head scratching

Your gonna make me jack up my rear wheel on my ford / crawl underneath / find the gear ratio tag & do the turns ... Just to check, so I can figure it out

Drat's ..... Another job to do next weekend

All good

Mike

Originally Posted by mike 90 RR

Now ya got my head scratching

Your gonna make me jack up my rear wheel on my ford / crawl underneath / find the gear ratio tag & do the turns ... Just to check, so I can figure it out

Drat's ..... Another job to do next weekend

All good

Mike

Or you could just accept the fact I'm right?

Keep us informed, preferably ad some piccies to