12.04.2013, 10:01
Hello nameless pal 
the differential gear ratio normally is 24:7 (3,429) and the portal axle gear ratio is 45:11 (4,090), giving 14,025 in total
The 22:7 differential gear ratio was available as extra (SA T35918), and, depending on the age of the Unimog, could be transplanted from there, giving 12,857 in Total.
The portal axle gears will not fit, they are totally different, as they are adapted from the heavy Unimog series, and I'm not sure the Unimog gear wheels fit in the MB-Trac portal gear housing.
You could perhaps try to get the faster special differential gears (23:9) from the Unimog to get more speed?
And how do you plan to implant the MAN gearbox? The front axle is connectet to the trac's gearbox...
the differential gear ratio normally is 24:7 (3,429) and the portal axle gear ratio is 45:11 (4,090), giving 14,025 in total
The 22:7 differential gear ratio was available as extra (SA T35918), and, depending on the age of the Unimog, could be transplanted from there, giving 12,857 in Total.
The portal axle gears will not fit, they are totally different, as they are adapted from the heavy Unimog series, and I'm not sure the Unimog gear wheels fit in the MB-Trac portal gear housing.
You could perhaps try to get the faster special differential gears (23:9) from the Unimog to get more speed?
And how do you plan to implant the MAN gearbox? The front axle is connectet to the trac's gearbox...
Grüße
DaPo (Daniel)