Hunter Posted January 21, 2014 Posted January 21, 2014 hi,this is my first cry for help I noticed on the last ride that it felt like the bike struggled at constant speed, this would happen at any constant speed but was more noticeable the faster I went.The revs and speed would stay the same but it felt like a large head wind had just caught me and pushed me back slightly. it would happen in almost a rhythm and felt very strange.so today I jumped the bike on the centre stand and let it spin in first and second gear, low and behold there is a clunking from the transmission that makes the bike judder and jump. It doesnt have a definite rhythm and there are no stiff links in the chain but it happens a couple of times in 30 seconds. The chain and sprockets could do with replacing due to poor care from PO but i think its more than that.There is a video I know is a long shot but if you turn your speakers up you might pick up on it. look out for the jumping and the noise that sounds like a train.http://www.youtube.com/watch?v=8b_g_XJo4EEI was hoping to not strip down the transmission etc.. until next winter but it looks like I might be getting my hands dirty.any ideas appreciated Quote
Adam Posted January 21, 2014 Posted January 21, 2014 I would say you've already identified the problem, if your chain and sprockets need changing then do it. The chain won't run smoothly with the sprockets if they're both worn down, look at your sprockets and see what the teeth look like, if they look like sharks teeth so small and pointy you need to change them. Also check your chain tension. Quote
Chrissb6 Posted January 21, 2014 Posted January 21, 2014 Hi definitely in need of serious chain and sprocket maintenance or maybe even replacements. Sort it quick mate before a major drama breaks out. Plenty of info on you tube to help you out. You really don't want to know the consequences of a chain breaking whilst your out riding. Stay safe Quote
Hunter Posted January 21, 2014 Author Posted January 21, 2014 Well the teeth don't look that bad but having recently found out the previous op had ridden 3k with a burnt out clutch(it had actually shattered) I want to replace things before they become an issue.The tension is fine and it runs smoothly at low speed or spinning by hand.The chain and sprockets sound like a good excuse for more shiny things:/). I'm just worried there is something else in the transmission. If I'm going to replace chain and sprockets can anyone make a recommendation of place to purchase?. I would be interested in going +1 to get some more punch.Thanks peeps !! Quote
Joeman Posted January 21, 2014 Posted January 21, 2014 Take the chain off the front sprocket and try running it slowly at constant revs to see if you still get the noises... if you do, you've got gearbox/clutch problems Stating the obvious, but you have checked it has transmission oil right??If you want a bit more poke, go -1 on the front Quote
Hunter Posted January 21, 2014 Author Posted January 21, 2014 Definitely ok with transmission fluid all the lubrication is from the engine oil.I'll try without the chain on to see consequences. It's just had new clutch plates, oil change and clean so it looks like gear box.It does happen in every gear on the centre stand buts it gets worse the higher the gear. Of course it's also going faster the higher the gear. Quote
acting_strange Posted January 21, 2014 Posted January 21, 2014 I had something similar on my old SV and when I checked I found teeth missing on the front sprocket...the previous owner had fitted a new chain and rear sprocket which were ruined by not changing the front... Quote
Chrissb6 Posted January 21, 2014 Posted January 21, 2014 Just a thought, have checked the cush drive in the rear wheel for ware and backlash? Chain and sprockets there's tons out there just make sure you get one to spec for your bike. Quote
stumblebum Posted January 21, 2014 Posted January 21, 2014 If I'm going to replace chain and sprockets can anyone make a recommendation of place to purchase A good place for chain and sprockets is here http://www.wemoto.com/ Quote
cruz Posted January 22, 2014 Posted January 22, 2014 Just a thought, have checked the cush drive in the rear wheel for ware and backlash? Chain and sprockets there's tons out there just make sure you get one to spec for your bike.My thoughts were the cush drive too, as everything else is in a sorry state and this is easily overlooked on any bike. Quote
megawatt Posted January 22, 2014 Posted January 22, 2014 Bring around to my place Jamie and we,ll check everything, before taking any drastic steps.? Quote
Hunter Posted January 22, 2014 Author Posted January 22, 2014 This forum is excellentFirst stop Megawatt.. Quote
Chrissb6 Posted January 22, 2014 Posted January 22, 2014 This forum is excellentFirst stop Megawatt..keep us posted Quote
Hunter Posted January 22, 2014 Author Posted January 22, 2014 ok quick update,Megawatt is a star and what an eventful afternoon!!!.Arrived and greeted by a coffee and a warm welcome, he kindly looked at the bike and agreed chain, sprockets all ok... this is starting starting to look expensive i am thinking.We start the bike up to have a quick look at it running and WHAT THE HELL IS THAT NOISE !!!. it sounded like a tin of bolts had been thrown in the casing. Big sigh and we wheel it in the garage to spend the next few hours mildly cursing and getting to know each other.It turns out to be the CCT which is known to be an issue on these bikes, with no manual one in hand we break down the automatic one installed to see if repair was possible. After lots of hard work from Mr Watt and lots of guessing from me we managed to get the original one back together and not sounding like a tractor but still bloody rough. Between this I was kindly dropped off and collected from my home and given huge amounts of coffee!.Still no idea what is wrong with the transmission but I now have ideas on a custom exhaust and I had an entertaining afternoon . lets see what the weekend brings !!.If anyone needs any work or servicing in the east sussex / kent area get in contact with megawatt.update to follow at some point in the near future (I hope).... Quote
megawatt Posted January 22, 2014 Posted January 22, 2014 Didn't get a look at front sprocket, but chain and rear sprocket were good and no jumping of chain when wheel spun backwards. Cush drive feels ok when moving wheel wheel with hub locked. A little movement , but not excessive. Jumping does occur with engine ticking over and bike in first gear.We will balance carbs when time and see if that helps. CCT was an unwelcome surprise, but after removing it and seeing a lot of oil being pumped to back of it and unable to blow brake cleaner, air or oil or grease through back off CCT or oil feed. I assume there's some sort of valve built in or it's blocked!!! CCT works mainly on oil pressure at the back of the camchain guide pusher and there is not enough pressure pushing the metal pusher onto the guide. We pressed hard onto the guide whilst starting the engine and there was no camchain noise and lots of oil from the tiny oilway!!!I'm wondering if some of the chain vibe and power surges could be down to the CCT backing off and varying the cam timing. Hopefully sorted when we fit the manual CCT. I could have done a manual adjustment to the auto CCT which would have worked , but we ran out of time and daylight. Further updates when we meet up again, maybe Friday or Saturday. Great that Jamie lives about 2 miles from me !!! Quote
Hunter Posted January 22, 2014 Author Posted January 22, 2014 Didn't get a look at front sprocket, but chain and rear sprocket were good and no jumping of chain when wheel spun backwards. Cush drive feels ok when moving wheel wheel with hub locked. A little movement , but not excessive. Jumping does occur with engine ticking over and bike in first gear.We will balance carbs when time and see if that helps. CCT was an unwelcome surprise, but after removing it and seeing a lot of oil being pumped to back of it and unable to blow brake cleaner, air or oil or grease through back off CCT or oil feed. I assume there's some sort of valve built in or it's blocked!!! CCT works mainly on oil pressure at the back of the camchain guide pusher and there is not enough pressure pushing the metal pusher onto the guide. We pressed hard onto the guide whilst starting the engine and there was no camchain noise and lots of oil from the tiny oilway!!!I'm wondering if some of the chain vibe and power surges could be down to the CCT backing off and varying the cam timing. Hopefully sorted when we fit the manual CCT. I could have done a manual adjustment to the auto CCT which would have worked , but we ran out of time and daylight. Further updates when we meet up again, maybe Friday or Saturday. Great that Jamie lives about 2 miles from me !!! like i said...lots of hardwork from him lots of guessing and drinking coffee from me Quote
Chrissb6 Posted January 22, 2014 Posted January 22, 2014 Good man for helping him out. My Mates blackbird was just the same sounded like a bag of nails he thought it was the gearbox! New cam chain and tensioner sorted it now running like brand new with 50k on the clock. Quote
Hunter Posted January 22, 2014 Author Posted January 22, 2014 thats what i need, some positive enforcement.. Quote
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