nc30 clutch biting?

[crazy man]

getting off the mark with engine number2 it goes from off to on with bugger all clutch lever movement not like the other engine witch is good as gold
is there anything l can do to fix this? thanks

[Akzle]

adjust your clutch.

[Brian d marge]

Cable ok? correct one ? Hows those clutch baskets , ribbed ? its a quick and simple job and if your careful u might get away using the same gasket .( not good practice but )

Stephen

ps does have a cable?

[Ocean1]

Not the old plate lugs wearing ridges in the basket fingers is it?

If so a carefull file usually works.

[darkwolf]

Not the old plate lugs wearing ridges in the basket fingers is it?

If so a carefull file usually works.

Any chance you can explain this further? I'd quite like to know more about the issue to see if it is why my VTR tends to bite a bit.

[Ocean1]

Any chance you can explain this further? I'd quite like to know more about the issue to see if it is why my VTR tends to bite a bit.

Half your clutch plates are splined to the clutch hub, the other half have little square tabs that project through slots around the outside of the clutch basket.

Those tabs take the full driving force of the engine, and over time they hammer small a small depression in the alloy slot. Eventually the depression gets deep enough that, when the tabs move across them they stick. It's often not evident pulling the lever, but releasing it the plates stay put untill almost all the spring pressure is released and then smack closed. Instant clutch drop.

Classic fix is to run a file carefully across both opposing basket slots until the depressions clean up.

[darkwolf]

Half your clutch plates are splined to the clutch hub, the other half have little square tabs that project through slots around the outside of the clutch basket.

Those tabs take the full driving force of the engine, and over time they hammer small a small depression in the alloy slot. Eventually the depression gets deep enough that, when the tabs move across them they stick. It's often not evident pulling the lever, but releasing it the plates stay put untill almost all the spring pressure is released and then smack closed. Instant clutch drop.

Classic fix is to run a file carefully across both opposing basket slots until the depressions clean up.

Cheers for the explanation.

[Katman]

Cheers for the explanation.

And the trick is to only file down far enough that you can still see the last remnants of the dimples.

That way you know you're not filing one clutch basket finger further than the others meaning the clutch plate tabs won't actually contact that finger.

[Brian d marge]

the dynamics of the hammering is fascinating , I wish there was a you tube vid of it ., it doesn’t just smack it once rather ( like valves) flutter , then you have the dynamics of surface "crush " of top of head its "hertzian failure ", its amazing how much we don’t even give a second thought to things like this , but as we are riding along ,t is clutch basket is being beaten sensless
and the thing is , how cheap are they to make ,,blown away every time I am

Stephen

[crazy man]

Cable ok? correct one ? Hows those clutch baskets , ribbed ? its a quick and simple job and if your careful u might get away using the same gasket .( not good practice but )

Stephen

ps does have a cable?

l know that makes it lighter to pull the clutch but now you have said that l'm thinking do some move more easyer than others and grabes them in a diffient way?. yes have a cable

[Brian d marge]

l know that makes it lighter to pull the clutch but now you have said that l'm thinking do some move more easyer than others and grabes them in a diffient way?. yes have a cable

In a nutshell , clutches 2 levers , with a bit of wire between them , and a big round sandwich , for more torque to be transmitted , either increase the clamping force or the number of faces ( or the radius ) of the plates clamping together , Or play around with the lever lengths . longer lever , lighter clutch , more lever movement. etc

Most people do the spring thing , but that just stresses the whole system , incl hand , if I can I like to try and get another place in there ...sometime you cant

Stephen

[F5 Dave]

Eventually the inner basket gets notched as well & that is harder to file out. Sometimes a 2nd hand unit is the only option on an older bike.