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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
What More Do I Need To Know About The G49 and Its Adjustment
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<blockquote data-quote="greg brillus" data-source="post: 161214" data-attributes="member: 597"><p>The 2 adjustments need to be made together.......It is pointless having the G 61 set up if the travel available at the G49 is not letting it go that far in either direction. It is quite true that some gearboxes do not like the G61 with the tabs either side, sometimes a little extra travel is needed. On bikes that have done lots of mileage the parts of the shift mechanism do wear quite a bit, so replacement with good new parts will definitly go a long way to fixing it. This is especially true of the G 40 shaft and its slot that fits in the bevel gear in the roof of the box......once this gets sloppy, the shift can suffer as some of the selector travel is lost........the G49 and the G 57 eccentric aduster work ok , but can give trouble as the hex edges of the G57 tend to sink into the soft alloy of the G 49.......this makes fine tuning adjustment difficult, so replacements are the best way........the G59 AS pawl is very hard, and these dont wear too much , but the ratchet G43 can suffer, and a new one can make quite a difference to the shift behaviour.......Another common issue is the detent plunger springs being a bit too strong, this makes the shifts a bit hard, and overselecting and/or finding nuetral can be difficult........ I simply compress a new spring in the jaws of a vice till it coil binds, this shortens the spring by about 2 mm.......this makes the shift much smoother and far easier to find nuetral........All good fun really........especially if you have a good head of hair.......Cheers.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 161214, member: 597"] The 2 adjustments need to be made together.......It is pointless having the G 61 set up if the travel available at the G49 is not letting it go that far in either direction. It is quite true that some gearboxes do not like the G61 with the tabs either side, sometimes a little extra travel is needed. On bikes that have done lots of mileage the parts of the shift mechanism do wear quite a bit, so replacement with good new parts will definitly go a long way to fixing it. This is especially true of the G 40 shaft and its slot that fits in the bevel gear in the roof of the box......once this gets sloppy, the shift can suffer as some of the selector travel is lost........the G49 and the G 57 eccentric aduster work ok , but can give trouble as the hex edges of the G57 tend to sink into the soft alloy of the G 49.......this makes fine tuning adjustment difficult, so replacements are the best way........the G59 AS pawl is very hard, and these dont wear too much , but the ratchet G43 can suffer, and a new one can make quite a difference to the shift behaviour.......Another common issue is the detent plunger springs being a bit too strong, this makes the shifts a bit hard, and overselecting and/or finding nuetral can be difficult........ I simply compress a new spring in the jaws of a vice till it coil binds, this shortens the spring by about 2 mm.......this makes the shift much smoother and far easier to find nuetral........All good fun really........especially if you have a good head of hair.......Cheers. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
What More Do I Need To Know About The G49 and Its Adjustment
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