Finally got to road-test the “new” machine, replete with oil cooler, internal filter, and fully-functioning brakes front and back.
Yes! It’s shifting much better from 2nd to 3rd. But it’s still not perfect. From missing 4 shifts in every 10 it now misses about 1 in every 10. Throttling-off momentarily to take load off the transmission at the instant of shifting gives better results.
If your Trumpet is missing shifts, then the accumulated wisdom of Phil Pilgrim and JB Nicholson is as follows:
(1) It may be because of worn dogs on the gear cogs;
(2) A bush may be loose in one of the cogs;
(3) The detent spring or shift-lever springs may be “tired”;
(4) The selector forks may be worn.
But FIRST, before you strip the entire transmission to look for these ailments, check under the gearbox outer cover to see if the ratchet nut on the mainshaft is tight.
Brakes work okay, too. Mind you, it was drizzling steadily and the road was greasy so I didn’t push my luck. Operating both brakes together brings the whole plot up very quickly, even in the wet. I don’t think I’ll ever bother with a twin-disc front brake conversion.
