Problems with changing down multiple gears - SV650.org

28-12-06, 10:45 AM

I suspect its the oil breaking down causing odd things but this week the bike has started no changing down a gear. The exact symptom is as follows -

Occasionally when changing down a gear with the clutch fully pulled in I can move to the next gear down but if I try to drop another without releasing the clutch the gear select leaver moves but no selection occurs. So If I try to go from 6th to 4th in two selects it fails.
If I release the clutch between these selections then it all works correctly, so if I go 6th to 5th then to 4th i have no problems and it only seems to happen in high gears.

Now the bike is over due a oil change (to be done this weekend) and I have been riding her in some really crappy weather. Hopefully the change will fix it, but I am worried the select is going. If it is at fault how much of a big job is this to fix?

28-12-06, 12:43 PM

Hmm, do you normally blip the throttle as you change down?

.

28-12-06, 02:18 PM

Quote:

Originally Posted by jonboy

Hmm, do you normally blip the throttle as you change down?

.

On single changes I think yes... but this is when I've slowed down alot, say via breaks and then had to drop down a few gears to match my new speed. Or if I trying to scrub off alot of speed but not with the brakes, and drop 2 gears on one go.

I think...

28-12-06, 02:45 PM

Well my experience of sequential gearboxes is that they don't like being asked to change down at low speed/revs, particularly if you're block changing. Give it a good blip for each cog you want to swap and see if that helps — or just ride better and be in the right gear in the first place

.

.

28-12-06, 02:51 PM

Quote:

Originally Posted by jonboy

Well my experience of sequential gearboxes is that they don't like being asked to change down at low speed/revs, particularly if you're block changing. Give it a good blip for each cog you want to swap and see if that helps — or just ride better and be in the right gear in the first place

.

.

That is true, but I've not ever noticed it before.

Biker Biggles · 28-12-06, 05:14 PM

Mine gets very rough at gear changing when the oil needs doing,and if the chain is out of adjustment.

04-01-07, 04:15 PM

OK, its still acting all odd. Changed the oil, adjusted/greased the clutch push-rod, and clutch cable.

I know its still buggered as when I change into first it don't lock in firmly, its just, well, soft... its hard to describe.

04-01-07, 04:20 PM

Bent gear selector fork not properly engaging each gear??? Dunno?

04-01-07, 04:21 PM

Quote:

Originally Posted by Scoobs

Bent gear selector fork not properly engaging each gear??? Dunno?

Its more ideas then I had... just got to figure out how to pull it apart...

04-01-07, 04:23 PM

Quote:

Originally Posted by Grinch

Quote:

Originally Posted by Scoobs

Bent gear selector fork not properly engaging each gear??? Dunno?

Its more ideas then I had... just got to figure out how to pull it apart...

Dunno.

HTH

28-12-06, 10:45 AM	#1
Grinch Guest Posts: n/a	Problems with changing down multiple gears I suspect its the oil breaking down causing odd things but this week the bike has started no changing down a gear. The exact symptom is as follows - Occasionally when changing down a gear with the clutch fully pulled in I can move to the next gear down but if I try to drop another without releasing the clutch the gear select leaver moves but no selection occurs. So If I try to go from 6th to 4th in two selects it fails. If I release the clutch between these selections then it all works correctly, so if I go 6th to 5th then to 4th i have no problems and it only seems to happen in high gears. Now the bike is over due a oil change (to be done this weekend) and I have been riding her in some really crappy weather. Hopefully the change will fix it, but I am worried the select is going. If it is at fault how much of a big job is this to fix?

28-12-06, 05:14 PM	#6
Biker Biggles Member Mega Poster Join Date: Jan 2005 Location: Barnet Herts Posts: 5,071	Mine gets very rough at gear changing when the oil needs doing,and if the chain is out of adjustment. __________________ On a clear day we stand there and look further than the ordinary eye can see.

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28-12-06, 12:43 PM	#2
jonboy Guest Posts: n/a	Hmm, do you normally blip the throttle as you change down? .

28-12-06, 02:45 PM	#4
jonboy Guest Posts: n/a	Well my experience of sequential gearboxes is that they don't like being asked to change down at low speed/revs, particularly if you're block changing. Give it a good blip for each cog you want to swap and see if that helps — or just ride better and be in the right gear in the first place . .

04-01-07, 04:15 PM	#7
Grinch Guest Posts: n/a	OK, its still acting all odd. Changed the oil, adjusted/greased the clutch push-rod, and clutch cable. I know its still buggered as when I change into first it don't lock in firmly, its just, well, soft... its hard to describe.

04-01-07, 04:20 PM	#8
Scoobs Guest Posts: n/a	Bent gear selector fork not properly engaging each gear??? Dunno?