surging revs but delayed power
 

Being my first motorbike I'm not sure if this is normal or not? When I nail it in any gear (but mainly 3rd or 4th) the revs seem to rise up to 9.5k before anything really happens and then they drop back down to about 7k without any gear change. At this point the power really kicks in. I'm pretty sure I'm not riding the clutch so I think something might be slightly wrong? :?

It's hard to analyse it in any more detail than that as I'm concentrating on my riding but any pointers to discovering a more accurate diagnosis are most welcome.

Sounds a lot like a slipping or badly adjusted clutch, but I stand to be corrected, since my expertise is mainly cage-based. But the principle's the same... :wink:

Either that or someone's slipped an automatic box in while you weren't looking?

Are you sure the big round black thing at the back isn't spinning round without gripping the road?

The bike (and/or the rear wheel) definately needs looking at mate. If mine started doing any of that nonsense the dealership spanner monkeys would be out & having a look at it outside my house. But then, mine's got a nice shiny waranty document :)

Sounds to me like it could be a slipping clutch, but again, I've only experienced this in a cage.

What happens when you wind the throttle like the rest of us mortals, instead of nailing it? :P

Ah...the wheelspin theory is interesting. I will try a more restrained acceleration on the way home and update this evening. I don't feel any lack of stability or squirming when it happens but I'll certainly double check.

Only reason I suggest the spinning up is because I had a similar problem in a Multi Storey Car Park. The MSCP now has a big black line down it!

I haven't done this on tarmac for fear of hurting my bank managers feelings, but I have quite often on VERY wet mud. Winding the throttle on a 125 & then easing off repeatedly I figured I was riding in a straight line (looking at where I wanted to be going etc). Until I hopped off the bike & looked back at where I'd been.

I'm sure I wasn't joyriding a snake, but evidence shows to the contrary :oops:

("Joyriding" being a figure of speech, the bike was legally owned by a mate... Just the location we were riding was dubious )

I'd look at adjusting the clutch first off, do a search on this, Sid Squid and others have put up some very clear guides.

yep, sounds like the clutch is slipping ,unless you are riding it on ice/slippery surface .if it tends to be just the higher gears (3rd,4th+ etc)and not in 1st,2nd it sounds even more like the clutch as theres more load on the engine /gearbox when you crack it open in the higher gears .adjust it and see ,if it still does it after its adj properly then i think youl have to replace the clutch plates ,but even so its not a big job to replace plates (i hr tops ,start to finish) 8)

I bet you a scottish pound it's the clutch. Pretty sure you'd know if you were spinning it up, that's very noticable. Not all that common in 4th either, unless your tyres are shagged. Could be adjustment, could be the wee lifter mechanism has spat its ballbearings and wants replaced, or it could be internal- but start with the adjustment and work in. You didn't say how many miles it has, but SV clutches are usually pretty long lasting unless abused- adjustment's just part of servicing but the plates tend to last.