Gear Ratios

i've been reading the manuals on the Mondial 8 and the 308QV. and noticed a difference in gearing. so i gather if one wanted to gear up/down you could use the gears from other models vs. machining new.

Mondi 8:
Idle gears 27/30 = 1:1.111
1st 13/42 = 1:3.588
2nd 17/36 = 1:2.353
3rd 21/32 = 1:1.693
4th 25/28 = 1:1.244
5th 28/24 = 1:0.952
R 13/38 = 1:3.247

Diff 17/63 = 1:3.705
Overall
1st 1:13.303
2nd 1:8.719
3rd 1:6.274
4th 1:4.611
5th 1:3.529
R 1:12.036

308QV
Idle gears 27/30 = 1:1.111
1st 1:3.419
2nd 1:2.353
3rd 1:1.693
4th 1:1.244
5th 1:0.919
R 1:3.248

Diff 17/65 = 1:3.823
Overall
1st 1:13.072
2nd 1:8.996
3rd 1:6.473
4th 1:4.756
5th 1:3.514
R 1:12.419

 

It looks like the mondail got the euro diff gears. The pinion is machined onto the output shaft, so you'd need the diff gear and output shaft.

Are you thinking of going to the QV set-up? If so I'll swap you for my QV parts.

 

sorry i'm not looking at swaping it was just something i noticed and it would explain the acceleration differences.

looks as though the mondi has a shorter 1st & 5th however a taller diff.

 

The gears don't appear to be that different. I would think more than gearing is the mondial is a heavier car? I don't think swapping would noticably increase acceleration.

Edit:Actually according to The Original Ferrari V8 book, Mondial 8 and 308 QV US have the exact same gear ratios. What you have quoted above for the QV is the Euro ratios. Mondial 8 #'s are actually for Swiss 308 QV.