Uhcoog1
01-21-2012, 03:59 PM
I've been researching differentials, mostly:
Quaife
Torsen Gleason
DPI
Truetrac
Wavetrac
I've noticed that some advertise preload - specifically the DPI, Wavetrac (though not specifically stated as preload), and Truetrac, who has at least one unit for the ford 9" that advertises preload. DPI says you need to send the unit in for service when the preload gets below a certain point; does the unit lose the bias ratio advantage over that of an open diff? I couldn't find any data for the Quaife and the Torsen Gleason on preload. I can see the advantage of the preload, but it's introducing a wear item (true at least for DPI and probably Truetrac; Wavetrac advertises it's a locker style preload- interesting).
One of the advantages of the gear type limited slip differentials is not having to perform maintenance, but do the units wear out at some point? How is the ~3:1 bias ratio achieved? Through mechanical advantage of the gearset? Through friction on the gearset? Are they all the same, more or less, or are they all slightly different?
I'm trying to figure out what makes them tick, so I can make an informed decision on which one I want.
Quaife
Torsen Gleason
DPI
Truetrac
Wavetrac
I've noticed that some advertise preload - specifically the DPI, Wavetrac (though not specifically stated as preload), and Truetrac, who has at least one unit for the ford 9" that advertises preload. DPI says you need to send the unit in for service when the preload gets below a certain point; does the unit lose the bias ratio advantage over that of an open diff? I couldn't find any data for the Quaife and the Torsen Gleason on preload. I can see the advantage of the preload, but it's introducing a wear item (true at least for DPI and probably Truetrac; Wavetrac advertises it's a locker style preload- interesting).
One of the advantages of the gear type limited slip differentials is not having to perform maintenance, but do the units wear out at some point? How is the ~3:1 bias ratio achieved? Through mechanical advantage of the gearset? Through friction on the gearset? Are they all the same, more or less, or are they all slightly different?
I'm trying to figure out what makes them tick, so I can make an informed decision on which one I want.