Gear return spring- 81 Jota

Laverda SF said:
The Breganzie Tranny is probably the one of the biggest motorcycle transmissions I've work with - The problem is if you blow the mill you can damage the tranny with oil contamination.
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but, I know a guy who was blown by a Tranny. 
 
BTT:
Considering the shape of the selector shaft tip, the bike has been either delivered originally with the L/H shift conversion linkage, or it was delivered as a R/H shifter and someone in the past replaced that gear lever shaft.
According to Andy Wagners catalogue, his original L/H shift conversion kits include not only the linkage and a non-splined gear lever shaft, like shown on your pic, but also the triangulated cover of the gear selector mechanism. As far as to be estimated from the pictures in the catalogue, it looks like the bearing seat on the LHS conversion cover is not protruding as far as the one on the cover of the RH shifters. Just a thought: L/H gear lever shaft has been combined with a triangulated cover of a R/H shift bike (does that work?), this added some wear and tear at the wrong places, causing your gear change woes?
 
When I bought my triple in '76 it had the same shift mechanism with the slotted/non-splined linkage with the left foot crossover gear shift. The gear shifts were terrible, sloppy as hell and resulting box full of neutrals. Took it back to the shop and they changed the setup to a splined linkage but retained the original triangular cover. Result was the shift shaft stuck out a lot further as the splined shaft was longer but the shifts became far more precise ( though still fairly agricultural) and only one neutral was left in the gearbox.
 
Right hand change the only way to go ...................best place for the cross over shaft is over the left shoulder...........now if some genius can work out how I can right change on the RGS I will be a happy man...
 
Build the RGS engine up with a series 2 Jota bottom end (cases, gearbox etc).
 
Brett said:
Right hand change the only way to go ...................best place for the cross over shaft is over the left shoulder...........now if some genius can work out how I can right change on the RGS I will be a happy man...
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Go and retrieve that crossover that you threw over your shoulder and put it on the RGS.

Dunno why crossover systems are so hated. Sure, they can get sloppy when worn out, but so can the linkage system on a right side rearset gearshift.  It's pretty simple to get all the slop out of either system. Seems to me that problems with crossover systems are down to lack of maintenance.
 
tom3c75 said:
Here's a pic of a spare pawl for a triple.  I've added some measurements for you to compare.
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Mine is pretty close to those dimensions.
Could an incorrectly bent spring put things out of whack.
Perhaps I should measure the eccentric.
 
blab said:
Mine is pretty close to those dimensions.
Could an incorrectly bent spring put things out of whack.
Perhaps I should measure the eccentric.
Click to expand...

Could be the problem. Red did have springs which were wrong so you may have one of those.
 
Looks like that is not moving far enough compared to mine - what is limiting the movement up or down - my gear change lever moves 2-3 inches to change on the lhs - it never misses a gear
 
I'm thinking the eccentric isn't eccentric enough.
See if it improves if you lift the spring higher than the highest point of the top of the lobe.
If so, get someone to put some weld on the top of the lobe and file it neat.
 
Could be a worn eccentric (aren't we all these days), tapped mounting hole in casing could have been drilled slightly off, wrong eccentric, who knows on a 40 year old bike.
 
Something else you need to consider the springs that are available these days are not quite the same as the originals and you may find that there is a lot of slack on the fork when the ends of the spring are holding against the eccentric bolt.
 
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