[Fot] LSD diffs, what specs to choose?

[Tony Drews]

Phantom Grip has had pretty poor reviews on the forums I participate 
in.  Quaiffe will be long lasting and low to no maintenance.  As long 
as both rear tires are on the ground, I really like it.  However, 
lift the inside rear wheel in cornering and you'll get some spin of that wheel.

Can't answer any of the Salisbury questions other than Tran-X being 
pretty much the only source that I know of for them.  For RACING, 
with my driving style (not nearly as smooth in the corners as Jack 
was), the Salisbury would be the way to go.  I would expect to wear 
out the clutches occasionally though.  For street use, I wouldn't 
hesitate to use a Quaiffe.  I would expect for the finned cover to be 
unnecessary for street use.  For race use, anything you can do to 
keep them cool is probably a good thing.

Tony Drews

At 06:14 PM 8/24/2011, Alexandre Camoletti wrote:
>Dear FOTers,
>
>Have to install a LSD in my TR3. As the diff needs to be rebuilt, I take the
>opportunity to install a LSD.
>
>It will be a (very) fast road car, fully prepped for long distance road
>rallies in various conditions  (Winter, Summer, dry, wet, snow).
>
>I would like the car to remain predictable and driveable in all sorts of
>real road situations, so it has to be some compromise I suppose, but I do
>not know the influence of the set up parameters.
>
>I know little about LSDs, hence a couple of questions:
>
>1)      Quaife (gear driven) or Salisbury (disc type)? I know the Quaife
>does not work with one wheel lifted, but has not the problems associated
>with disc type (oil quantity and heat)
>
>2)      If Salisbury type: what ramp angles? I heard of 45/45, 45/60, 30/60
>
>3)      Re Salisbury again: the locking should be lightweight or fully
>interlocking?
>
>4)      Salisbury still: looks like TRAN-X in the UK is the one
>manufacturing them or did any one of you have good experience with another
>Salisbury type LSD manufacturer?
>
>5)      Still Salisbury; should the RACETORATIONS finned cover be fitted to
>increase cooling and oil capacity, or is not critical in a fast road
>application?
>
>6)      There is also the PHANTOM GRIP possibility , what is it and is it
>worthwhile?
>
>Thank you in advance for your feedback!
>
>With kind regards
>
>Alex Camoletti
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