Gsxr swing arm movement??????

[Marc clayton]

Hello chaps

mate of mine has a gsxr 750 srad

he has said that it doesn't seem to be handling right?? 

Ive looked at wheel bearings and they look and feel fine

ive looked at shocker, no oil leaking out looks in good nick

the last check I did was the swing arm so I got my mate to hold the bike on its side stand and he pulled it toward him so the rear was off the ground, anyway I was lifting the wheel and they is the smallest amount of play vertical? 

Could this be the the needle

bearing? Or the bushes on the big nuckle under the shocker? 

Thanks chaps in advance 

 

 

[Danm54]

Probably the needle bearings in the knuckle, had the same thing on my rf6.

You might need 3 people but you'll see the movement between the knuckle/dog bones/shock.

 

Don't know if it'll affect handling but it'll need sorting. Not cheap bearings either.

[Marc clayton]

Sound thanks for that I will let him know,  I will end up doing it for him anyway as he doesn't have any tackle

[Rene EFE]

Whatever will be wrong with it; if there's play anywhere, it will have "interesting" handling

[Marc clayton]

Cheers people, we changed the lot, swing arm bearings and the nuckle bearings no play what so ever now, he's just trying to find a soft link fr it but we carnt seem to find the size on the side of the chain? I know it's o-ring but I don't know owt else? Anyone enlighten me??

[jambon]

Hope it's ok to post here instead of creating new thread as I'm having the same issue on the same bike. I've recently rebuilt the rear linkage with new bearings and bolts so confused why I'm getting this up and down play.

Here's a video of said play

It seems the play is coming from the front where the linkage attaches to the frame (arrow in pic). The manual says washers go in between the two aluminium frame mounting points that come down, but these are fitted. Either way I would have thought this would only stop side-to-side movement. My hunch is that if a steel bolt is going through an aluminium hole then the alu frame hole will need to shimmed as that has worn?

[baldrick]

theres only really 2 possible scenarios here, considering the bolt is the right diamater.

its either the bearing is worn out , (unlikely as you have fitted new ones), or the hole has ovalised through wear. best bet is to get the verniers out and measure the hole in a few places.

[jambon]

Makes a lot of sense and confirms my suspicions. Will get the calipers out to investigate. Thank you.