Hyosung GT250R '06 - wobbles around corners...

[DarkLord]

Hey everyone

Sorry if this has been posted before but I can't find any other threads on this....

I find that when I'm leaning off the bike and taking a corner that the bike tends to wobble under me a bit, it doesn't feel it's slipping on the road or anything or like there is any risk of me coming off but it's definitely not as smooth as it should be.... from what I've heard the rear shocks on the Whoflungs leave a lot to be desired, but being a n00b I really don't know if this is the problem...

Has anyone else experienced anything like this and if so, what is the best way to go about fixing it? I've got the bike booked in for a full service on Monday next week, should I perhaps mention it to the guys doing the service? (Spectrum in Takapuna - Hyosung dealers). I'm still running the stock shinkos at the moment - would a decent set of rubber help?

Any thoughts or advice would be much appreciated.

Cheers

Graham.

[WRT]

Have you checked your tyre pressures first?

[DarkLord]

Yup, I check them regularly and always make sure they're just slightly above the recommended Psi for solo riding.

[CookMySock]

try setting the rear suspension as soft as it will go, and dropping your tyre pressures to about 4psi below the recommended.

If that doesn't do anything, then can you offer us a more detailed description of this wobble ?

DB

[Hinny]

Random thoughts;
All bikes wobble when the rubber lets go.
Shinkos don't seem to have a very good reputation.
Maybe you need to slow down. It's not a race bike!
Good move asking for advice.

PS Have you got your head and shoulders off the bike or just your bum?

[325rocket]

how fast are you going? i.e. are you going for it?
how tight are the corners?
have you played around with the shock?
how much do you weigh?

[DarkLord]

I'm going fairly fast, taking 55 corners at maybe 80 or something. I don't know exactly how fast as I'm looking at the road ahead and not my speedo

I usually have my head and shoulders quite far off to the side and my bum off the bike as well, often I'm sitting right off the bike and my legs are carrying my weight.

I haven't played around with the shock as I don't really know how to. I'm a total lightweight, I only weigh about 60 kg or so. My flatmate has a Bandit 1200 and his bike is smooth as anything round the corners, he's only slightly heavier than me and his bike is pretty big so I don't think bodyweight has anything to do with it, however I could be wrong of course.

Thanks for the pointers guys. Let me know if you need any more info.

[325rocket]

one more...

do you still have the "chicken strips" on your tyres?

[DarkLord]

I do, they're not really that big but they are there. I'm trying to work on that though.

[Radar]

Check the rear shock for leaking oil - possibly on the rear wheel rim and mistaken for chain oil. While stationary, bounce up and down on the seat once or twice - if the shock is worn the bike will 'return' the bounce.

Do you feel a wobble at any other speeds but not while cornering? If so, have the tyres balanced.

Also ensure that the wheel/swingarm bolts/nuts are tight and that the chain has the correct tension.

[CookMySock]

I haven't played around with the shock as I don't really know how to. I'm a total lightweight, I only weigh about 60 kg or so.

On account of your skinny ass, You will DEFINITELY need that rear shock on its lowest (softest) setting, and even then you are into the famous hyosung horrible-rear-shock situation - they aint that flash 'm 'fraid.

Two things ;

Time to get the manual out, and talk to your friendly bike shop, and put the rear shock on setting 1.

My Wife is in the same situation as you - tiny ass on her GT250R so I am gunna get her rear shock changed, so I will keep you informed as to my progress with this. I am expecting a big improvement.

best,
Steve

[DarkLord]

Thanks all. I'll mention it to the guys at Spectrum when I drop the bike in for it's service next Monday. I'll do a bit of research myself as well.

Thanks for the help.

[tri boy]

Try not "hanging off" the bike, and counter steer your way through the corners.
You might be the cause of the wobbles by upsetting the dynamics of the bike.
Rarely do you need to take the "racer crouch" on a road bike. You will be pleasantly surprised by how effective counter steering done properly works.

[DarkLord]

Thanks for the tip tri boy, thing is my flatmate who is quite an experienced rider and has done track days etc has ridden my bike and taken corners at speed, and has encountered the same thing, which makes me think it may not be a technique thing and something to do with the setup of the bike?

Either way I'll have a chat to the Whoflung dealers when I drop the bike off on Monday and get them to take a look while servicing it.

Cheers

[CookMySock]

Rarely do you need to take the "racer crouch" on a road bike.

For real ? C'mon now, it's essential and necessary, particularly on the Hyo GT-R's et al.

You will be pleasantly surprised by how effective counter steering done properly works.

I agree with you completely here. But racer crouch plus countersteer while you're hoofing it along is tantamount to godlike ! Bring it!

DB