Two prods for first gear

I've just had to replace my mainshaft, layshaft, mainshaft 1st and 2nd gear due to my start roller fiasco. without touching anything else, the selection of first gear now needs two prods whereas before it went in nicely. Kickstart end float is good at 0.010" and was before. It's an issue at traffic lights when you think you are in 1st but not. Any ideas?

Did you replace both gears as pairs? I have had some shifting issues and they usually stem from what seems to be a slightly weak return spring or a less than authortative shift attempt. Also (and this doesn't really apply to first gear) if you leave your foot on the lever between shifts, you can sometimes prevent the shift ratchet from functioning cleanly.

Clutch/ primary chain adjustment

I didn't replace the gears as pairs in an effort to keep down cost. It's almost like the gears need to turn a tad to allow engagement. All other aspects of the box are good and the clutch and primary chain are correctly adjusted.

gripper said:

I didn't replace the gears as pairs in an effort to keep down cost.

Click to expand...

You may then have to see if they "ride up with wear", as Mr Grace used to say...

I too am rather hoping for some knowledgable input here as my box does it too, and as done as long as I've owned it.

I am also fairly convinced the box had never been apart prior to my delving in. So it's most likely Ben like this since new I'd say.

The primary belt on mine was WAY too tight when I bought it, correcting that didn't fix it. Fitting a new clutch pack from Matt (which works perfectly) didn't fix it. And having the gearbox rebuilt by Norman White didn't fix it.

F*#*ing thing !!

However, if it's any consolation, you do get used to it!

I have had that happen on occasions, but when it happens to me it is a surprise. Usually notice by high revs and no go. Did it to me once last weekend. 1000 mile ride so not that often. When the dogs on the gears line up together instead of dogs to slots, then you wont get it in. Releasing the clutch and trying again can help. It is common for gearboxes to do this but most gearboxes don't as a rule. Used to happen on English cars made before the 70"s.
Dereck

I have changed back from bronze plates to a set of ancient fibre plates, all cleaned off and working well. I wonder if the good clearance on the bone dry clutch is allowing the gears to sit still with the clutch in as opposed to spinning slowly and allowing selection. In other words the dry fibre clutch is just too good

gripper said:

I have changed back from bronze plates to a set of ancient fibre plates, all cleaned off and working well. I wonder if the good clearance on the bone dry clutch is allowing the gears to sit still with the clutch in as opposed to spinning slowly and allowing selection. In other words the dry fibre clutch is just too good

Click to expand...

I've experienced the same thing shifting into 4th gear. Started when I went to a belt drive primary and Barnett clutch plates.