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General Category >> Rubber Side Down! >> 09 S40 bike starts wobbling a 60mph
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Message started by jde30 on 03/18/11 at 14:28:47

Title: 09 S40 bike starts wobbling a 60mph
Post by jde30 on 03/18/11 at 14:28:47

I took my bike to work today. when I hit 60 mph the bike vibrated and wobbled really bad. the tiers had the correct air pressure. just wondering what can be causing this. thanks

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by MotoBuddha on 03/18/11 at 14:30:14

Was it normal before?

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by verslagen1 on 03/18/11 at 14:33:25

New tires?
A B normal wear?
Any thing loose?

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by dfaussone on 03/18/11 at 14:34:10

Check rear wheel alignment.

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by jde30 on 03/18/11 at 14:55:51

nothings loose it and it never did it before i bought the bike new less than a year ago. it has only 2800 miles on it

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by verslagen1 on 03/18/11 at 15:13:06

sit on the bike and rock it forward apply the brakes to stop, do you hear a clunk?

lift the front end, grab the wheel and shake, loose?

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by Chopped on 03/18/11 at 18:14:54

or a blown fork gasket....

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by ATLjan on 03/19/11 at 16:13:10

Could the balancing weight have come off a tire?

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by Routy on 03/19/11 at 16:42:14

Feel like the front wheel or back ?

I guess if a large weight up and left, that could cause a wheel vibration.

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by jde30 on 03/20/11 at 05:07:55

feels like back tire

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by Trippah on 03/21/11 at 20:21:50

Any squeeling from the drive belt?

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by justin_o_guy2 on 03/22/11 at 00:19:43

47617A6363727B130 wrote:

Any squeeling from the drive belt?

He' not sure where th noise is coming from, but when the front starts to working back & forth, it gets loud up n that helmet.

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by greenmonster on 03/22/11 at 07:33:41

You didn't happen to have added a windshield to the bike did you? I adjusted mine one time and that gave me a wobble at about 60.

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by Trippah on 03/22/11 at 19:40:48

Good thought greenmonster - I was wondering if he had adjusted the rear wheel or belt tightnedd incorrectly but that should show up quicker..while your windshield idea is probably more on target at 60+mph.

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by Lawsonwelding on 03/22/11 at 21:46:58

I have the same problem with my 09 , it has 400 miles on it , i get to 70 mph and it feels like the bottom is slidin back and forth under me , im not sure if its normal but i dont like it and dont know if i like the bike anymore if it keeps it up and its just the way it is .... I know its a light bike but i wouldnt think it would be doing this i havent drivin that much at over 60 so im just not sure? any help would be nice , i am going to the dealership tommorow i might see if they will balance the tires for me to double check everything , no windsheild but i do have saddle bags i was thinkin i might take them off to see if it changes the problem

Title: Re: 09 S40 bike starts wobbling a 60mph
Post by verslagen1 on 03/22/11 at 22:27:21

Couldn't tell you if this is the problem or not, but some other bike has an issue with the swingarm bearings wearing out and making it loose. Might be worth checking.