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GT GEAR SELECTION
Posted: Sun Mar 29, 2009 7:05 pm
by gerard collier
I AM HAVING TROUBLE FROM TIME TO TIME DOWN SHIFTING,
SAY IN THIRD OR FOURTH AND NOT BEING ABLE GET INTO FIRST
AT THE TRAFFIC LIGHT, HAVING TO START OFF IN SECOND AND THEN BEING SBLE TO GET BACK INTO FIRST ???
ANY INFO ON ADJUSTING THE SCREW NEXT TO THE SHIFTER
Posted: Mon Mar 30, 2009 10:36 am
by bobnorton
Hi Sounds like the clutch may be dragging,does it lift enough to allow a free kickover in nutral?, the screw only adjusts the lever position, does the lever hit the ex pipe and restrict travel?If dragging its usually too much oil, warped plain plates or notched center.or uneven springs.
Posted: Mon Mar 30, 2009 11:40 am
by BevHevSteve
......... or a worn out [stretched and about to break] clutch cable.
or the clutch basket nut has backed out allowing the clutch basket to wobble around a bit
Posted: Mon Mar 30, 2009 5:45 pm
by wdietz186
Gerard,Before you tear into the primary side you should take apart the shifter box and inspect the shifter centering spring.These have a habit of breaking and it sounds like yours is getting weak.While in there clean and grease the rest of the mechanism.The box is not lubricated by the engine oil and if in weather can admit moisture and rust.Plus after 30yrs. the grease probably isn't.The eccentric is to center the shift lever free play and really dosen't affect a whole lot.Also make sure the oldham coupler hasn't been eaten on by loose chain adjustment it can bind and cause poor shifting. Bill
Posted: Tue Apr 07, 2009 6:16 pm
by Den
As an experiment:
1. Please loosen the locknut on the little shifter box screw.
2. Turn that little screw both directions until you have ascertained that the shift lever is at the middle of it's travel.
3. Test ride the bike.
4. Report your results here.
Posted: Wed Apr 08, 2009 12:04 am
by bobnorton
Thats interesting Den, just as an experiment I'll play with the adjuster on my problem free gearchange to check the effect, and I'll report back.Another item worth checking is the ball in the lift mechanism, mine was worn into scrap.
GT gear selection
Posted: Sun Apr 12, 2009 11:16 am
by gerard collier
I removed the gear selection housing, I had had it apart when I split the
engine case, springs are good and stiff and everything looked in order.
I remounted it and adjusted the screw clockwise 1/2 turn,you
can see the
shift lever moving as you do this. Test drive time, the down shifting into first came back right away but the up shifting from 2nd to 3,4,5 would take 2 trys to find the gears, pulled over, readjusted counterclockwise
1/4 turn and everything came back to normal and went on for a nice ride.
I have 190 miles on it now and am planing on checking the valve clearance when I reach 200
Thanks for the info.
Gerard