Double (de-)Clutching

[David H Willis and Associates Limited <davwil@domain.elided>]

Ed and Fred, both prickly but good! Yes, I have a Caribou top and have
often sought Fred's advice

Fred's system for downshifting -- keeping your foot on the throttle
while fully-depressing the clutch -- allows the engine revs to increase
when unloaded, more closely matching the transmission input speed after
shifting to a lower gear -- save a bit on the clutch, lose on the syncros

Double (de-)clutching on the downshift, also spins up the input to the
transmission before shifting, to save a little on the syncros, but at
least double the wear on the clutch

Fred is again correct, of course, about upshifting. The engine will
begin slowing when unloaded by the depressed clutch. And the
transmission input will slow when you shift to the higher gear. The
match will be better than if you spun them both up in neutral by double
(de-)clutching. The syncros will take a hit no matter what you do, but
less of a hit when you don't double (de-)clutch. Clutch wear will be at
least halved

Ciao!
Dave Willis
1974 Spider Veloce (yeah right!)
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       David H Willis and Associates Limited
Coastal Engineering  Technical Writing  Ginie cttier
              121, rue Queen Mary Street
              Ottawa, Ontario  K1K 1X4
              Canada
              (613)749-0867
              fax if you must: (613)741-4249
              davwil@domain.elided
           http://www.magma.ca/~davwil/
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