classic motorcycle forum

Thanks John.

As I haven't removed the inner gearbox cover at any stage, and the timing of the gear selection seems OK as I am getting all 4 gears, I can't help feeling that the grease might be playing a part in this.  It is a "proper" sloppy gearbox grease, but I think I will try adding a bit of oil to it to see if it improves the situation...

N

Folks

A little while ago, I had some clutch related issues on my 1954 Comet.  A new clutch centre, plates, pushrod and operating plunger seemed to remove the horrible noises I was getting.  http://classicmotorcycleforum.com/index.php?topic=5322.0

So far so good.

I have removed and replaced the outer gearbox cover so often during this process, I have gradually come to understand the process for timing the gear selection mechanism....  Or at least, I think I have...  But I still have a feeling this may the cause of the issues I still have.  I have also filled the gearbox with gearbox grease as it seemed very dry.

I currently have 4 good gears and a neutral.  This suggests to me that the selection mechanism is correctly timed?  But when changing from 1st to 2nd, 2nd gear is not there.  However, if I make this change in two discrete steps, i.e. go from 1st into neutral and then from neutral into second, all is OK.  But I can't make the change in one movement. 

All other gears seem to select fine in both directions - although some of the down-changes are crunchy if the engine speed isn't right.  I suspect this is down to the new clutch plates being a little sticky and not freeing up fully.

Any ideas why the change from 1st to 2nd could be so fussy?  I have not removed the inner gearbox casing at all, and the gears worked perfectly before I starting messing with the outer cover and clutch, so I can't help thinking that it is something I have done (my golden rule!). Could the presence of grease in the gearbox be a factor in this?

Thanks in anticipation...

Nigel

Sorry for slow update.  John, you were spot on.  The mainshaft nut behind the kickstart cover was loose.  Tightened this up and (after many hours of trying to get the cove back on with the gears correctly synched!) all seems OK.

Thanks for your advice.

N

Hope someone here can help me...

I have a Vincent Comet (with Burman gearbox).  All has been fine until....

1. A lot of slack suddenly appeared at the clutch lever (within a 1 mile journey).  Someone else was riding the bike at the time.  I adjusted the slack out by removing the small cover on the gearbox and adjusting the nut on the actuating lever fulcrum.  Clutch then seemed OK.  Not sure what brought this on, or whether it is relevant to the next issue....
 
2.Immediately after the clutch issue, when sitting with the engine running and  in neutral, I could here the sound of gears occasionally just catching each other, like the sound that you sometimes  get when in a false neutral.  Otherwise gears were fully functional and OK to ride home.  Further examination has confused the hell out of me.  With the bike on the rear stand, all gears (and neutral) can be selected.  However, as soon as the bike is taken off the stand and I sit on the saddle, the bike falls out of neutral.  It is then very hit and miss as to whether neutral can be selected.  As soon as the bike is back on the stand, or I dismount, then neutral is possible.

Has anyone any idea what I should be looking for when I strip down?

Thanks

Nigel

Sounds great.   Keep us posted on dates etc as I would certainly like to come down to take some pictures etc.

Good luck with your venture.

Cheers
Nigel

Is this the type of device you mean? 

Cheers
Nigel

Hi Jim,

it certainly isn't an MoT requirement as I have just MoT'd my CS1 with no front mudguard.

Sorry about that.  Gremlins in the works...  It is all sorted now - I hope....

Happy New Year!

cheers
Nigel