Transmission clonk when pulling away

[skurfingthevoid]

hi,
could someone please advise me on a clonk ive been having when pulling away.
The clonk is not on the initial pulling away but clonks a second or so after. Almost like the clutch is slipping and then gripping. but the clutch doesnt appear to be slipping.

Thanks Andy

[CMSMJ1]

NCs don't have cush drives - so the chain tension needs to be bob on - have you had a look at it?

[skurfingthevoid]

is a bit slack, im thinking mayb the chain and sprockets are rather worn, its getting near the red on the swing arm indicator, its quite a odd clonk not like ive had on other bikes when the chains slack.
Thanks for your reply ill adjust it and see what happens

Andy

[skinnydog0_0]

check everything is as it should be; No movement in the rear wheel, no movement in the forks does the bike feel loose when riding or slip out of gear?

[skurfingthevoid]

Checked what u said, rear wheel bearing is all good swingarm seems good.
forks do have a slight bit of play but i dont think its that. doesnt feel loose or slip.
i adjusted the chain and there is less of a clonk, could it just be worn sprockets and chain and the clonk just be it going back to tension from stopping. or is it clutch related? worn basket i dont know!

maybe i should buy a new sprocket and chain set and see what happens.
does anyone know what size should be on the front. ive gt a 40 tooth on the back.
cheers

[Man_Named_Dave]

15 teeth on the front as standard.

[amorti]

I'm thinking rear suspension bearings. Pulling away will load and unload the needle bearing in particular, maybe that's worn. Lift the rear of the bike and give everything a wiggle test.