progressive shifting

[barenekd]

CZ probably had the best gearbox ever. You could stomp that one into first sitting at the starting line, in the days when you started the race with your hand on the helmet. You could be off the line before your had got to the bars. They held up for a long time never using the clutch for shifting. Mine lasted a year with no problems. Most gearboxes are not that forgiving.
  had an American Eagle 405 (Sprite) that broke 2nd gear every time I rode it, clutchless or not! I'm sure the Enfield box won't take that CZ kind of abuse!
Bare

[rep_movsd]

Did you mean Jawa CZs? They have a linkage that depresses the clutch automatically between gear shifts. You can keep the lever pressed upwards between neutral and 1st and it will remain without drive until you release the pressure. It took me quite a while before I realized that the bike actually shifts better without the manual clutch than with it!

[barenekd]

Did the CZ motocrossers have that? It didn't seem like it. The bike shot out of the hole like a rocket before my foot came off the shifter.
Bare