GSXR front end fitted - instability at high speeds - SV650.org

hindle8907 · 29-04-10, 08:42 AM

Helllooo....

had some k3 gsxr 600 forks fitted the other day to replace my K1 forks and went for a blast last night(on a private run way),
at highish speed around 95 the front felt a bit wobbly like my handle bars was going left to right fast but slightly. more of a wobble.

could it just be the forks are set-up bad or uneven maybe ?
I don't have any bar ends either can this effect the handling ?

at 70mph the bike feels fine.

any ideas .

29-04-10, 08:46 AM

wheel balance

timwilky · 29-04-10, 08:49 AM

who set them up for you?

Please tell me that you at least changed the oil before fitting?

ride to Preston and see Fud

Paul the 6th · 29-04-10, 09:09 AM

when I had the front wheel off to fit front discs, the mechanic at york suzuki advised to refit the wheel but before fully tightening the axle nut, bounce the suspension up and down a few times to make sure the wheel is centered & true... Not entirely sure if this could have any benefit for ya but might be worth a shot

29-04-10, 09:12 AM

id say the forks are twisted, exactly the same thing when i came off my bike before christmas, apart from id get it above 50mph.. but they were very twisted

hindle8907 · 29-04-10, 09:37 AM

Quote:

Originally Posted by barwel1992

id say the forks are twisted, exactly the same thing when i came off my bike before christmas, apart from id get it above 50mph.. but they were very twisted

I doubt the forks are twisted they have just been fitted by a reputable mechanic.

hindle8907 · 29-04-10, 09:38 AM

Quote:

Originally Posted by timwilky

who set them up for you?

they haven't been set-up by anyone just left how I got them.

guy is well into his bikes i trust him and said they are fit to just bolt on, don't need a service or oil change.

I don't really know Fud do you think he would do them for me ?

hindle8907 · 29-04-10, 09:41 AM

Quote:

Originally Posted by AndyBrad

wheel balance

how much does this cost to have done,
and what's involved ?

hindle8907 · 29-04-10, 09:42 AM

Quote:

Originally Posted by Paul the 6th

when I had the front wheel off to fit front discs, the mechanic at york suzuki advised to refit the wheel but before fully tightening the axle nut, bounce the suspension up and down a few times to make sure the wheel is centered & true... Not entirely sure if this could have any benefit for ya but might be worth a shot

cheers for the tip but i don't own the tools to do anything like this, but as above they was fitted by a reputable mechanic . i know that doesnt rule out bad fitting but it feels fine going 70-75.

29-04-10, 12:13 PM

just because they were fitted by a reputable mechanic doesn't mean the forks couldn't still be twisted

thing to do to make sure they are not twisted it to undo all the bolts (4 of them) on the bottom yoke that hold the fork tubes in place do not undo the top yoke bolts then bounce the front up and down this straightens the forks "IF" they are twisted

its worth a try

29-04-10, 08:42 AM	#1
hindle8907 Member Mega Poster Join Date: May 2009 Location: Manchester Posts: 1,492	GSXR front end fitted - instability at high speeds Helllooo.... had some k3 gsxr 600 forks fitted the other day to replace my K1 forks and went for a blast last night(on a private run way), at highish speed around 95 the front felt a bit wobbly like my handle bars was going left to right fast but slightly. more of a wobble. could it just be the forks are set-up bad or uneven maybe ? I don't have any bar ends either can this effect the handling ? at 70mph the bike feels fine. any ideas . __________________ 2006-2007 -- Gilera Runner 50 - Sold 2007-2008 -- Hyosung XRX125 - Stolen 2009-2010 -- 05 SV650n - CAT - B 2010-Now -- 00 SV650s & 00 SV650n & GSXR 600 K2 Last edited by hindle8907; 29-04-10 at 08:44 AM.

29-04-10, 08:46 AM	#2
AndyBrad Guest Posts: n/a	Re: felt abit unstable at high speed wheel balance

29-04-10, 08:49 AM	#3
timwilky Member Mega Poster Join Date: Mar 2004 Location: Not in Yorkshire. (Thank God) Posts: 4,116	Re: felt abit unstable at high speed who set them up for you? Please tell me that you at least changed the oil before fitting? ride to Preston and see Fud __________________ Not Grumpy, opinionated.

29-04-10, 09:09 AM	#4
Paul the 6th Member Mega Poster Join Date: Mar 2007 Location: Yorkshire Posts: 4,790	Re: felt abit unstable at high speed when I had the front wheel off to fit front discs, the mechanic at york suzuki advised to refit the wheel but before fully tightening the axle nut, bounce the suspension up and down a few times to make sure the wheel is centered & true... Not entirely sure if this could have any benefit for ya but might be worth a shot __________________ RIP Reeder 20/07/1988 - 21/03/2012 - You were awesome Cbf600, sv650, sv1000, gsxr 750 srad, KTM adventure 950, gsxr 750 k1, gsxr 750 srad, fazer 1000, zx9r ninja..

29-04-10, 09:12 AM	#5
barwel1992 Guest Posts: n/a	Re: felt abit unstable at high speed id say the forks are twisted, exactly the same thing when i came off my bike before christmas, apart from id get it above 50mph.. but they were very twisted

29-04-10, 12:13 PM	#10
barwel1992 Guest Posts: n/a	Re: felt abit unstable at high speed just because they were fitted by a reputable mechanic doesn't mean the forks couldn't still be twisted thing to do to make sure they are not twisted it to undo all the bolts (4 of them) on the bottom yoke that hold the fork tubes in place do not undo the top yoke bolts then bounce the front up and down this straightens the forks "IF" they are twisted its worth a try

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