Mixing gear diff and ball diff

[Loheswaran]

Has anyone here tried a combination of gear diff at the front will ball diff at the rear - or vice versa?

I only ask this coz I had a spool failure in my TC, and put a gear diff up front with a ball diff at the rear to get me through the day, and it actually made the car faster over a lap - combining the drive of a sspool out the corner, with the turn in of a diff on corner entry with the stability of a ball diff at the back - in fact I have kept the car that way.