[TR] Clutch slave cylinder

[Randall]

> Compared to a modern stick shift car is the standard TR4A 
> clutch operation
> heavy, medium or light?.

I have a 4A clutch in my TR3, and it is slightly heavier than my last American car with a clutch, but not by much.  I'd say maybe
20% heavier than an old Miata, and comparable to a 2005 Lotus Elise.  (However, the US version of the Elise has a different engine,
and I don't know if the clutch is the same as the UK version or not.) 

However, it seems there is a great deal of variation and some are _very_ heavy.  The 4A used the same B&B clutch as early TR6 (which
seems to be more or less interchangeable with the later Laycock/Luk), and here are some interesting articles on the subject of force
required with replacement parts.  Almost a 2:1 variation!  And the author stated that the lightest combination was too light for his
taste!

http://tinyurl.com/927hr2
http://tinyurl.com/ke3bbyw

This article I think offers some interesting theories about why there is so much variation:

http://www.vtr.org/maintain/clutch-laycock.pdf

Randall