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Old 13-04-11, 12:35 PM   #1
fergieuk
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Default Suspension question - twitchy under brakes.

Hi all new here but forgive me for jumping straight in.

have a 52 650s carb,she is unloading in the corners when changing gears or braking and towards junctions when not straight! any ideas?

Have checked swing arm mount, shocker and mount, wheel bearings chain etc and not play anywhere, is this a characteristic of the bike? Its not to be ridden hard but will have my wife on it an odd time for a wee run out so want to know what it is up to.

Cheers
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Old 13-04-11, 01:50 PM   #2
johnnyrod
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Default Re: twitchy under brakes

Not totally sure what you mean about unloading. Stock suspension is pretty soft both on damping and the springing is even worse. Rear shock tends to be fine for the road but gives up at low mileage so check it still works, could be it's lost it so not much rebound damping left back there.
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Old 13-04-11, 07:54 PM   #3
fergieuk
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Default Re: Suspension question - twitchy under brakes.

when i say unloading its a poweroff thing.... when i am on full throttle its fine....when i come off power to chenge gear' etc the load on suspension changes. Hope this helps

Fergie
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Old 13-04-11, 08:51 PM   #4
Bibio
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Default Re: Suspension question - twitchy under brakes.

the stock suspension on the sv is pants to say the least. there is almost non existent dampening in the front and if the rear shock is old its the same. pogo sticks come to mind.

things that will improve the bike:
new springs in the front to suit your weight
fresh oil to go with springs
younger rear shock

even better:
add racetek emulators to the new springs and oil
gsxr/zx rear shock

the doggys:
gsxr front end swap or cartrage drop ins
after market rear shock built to your weight
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Old 13-04-11, 08:54 PM   #5
yorkie_chris
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Default Re: Suspension question - twitchy under brakes.

Quote:
Originally Posted by fergieuk View Post
when i come off power to chenge gear' etc the load on suspension changes.
That is inevitable, what problem is it causing?

Like bibio says, stock kit is crap.
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Old 14-04-11, 06:15 AM   #6
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Default Re: Suspension question - twitchy under brakes.

http://www.fjmods.btinternet.co.uk/emulators.htm

i found this a useful read as im still a newbie. Could a mod pleae put this wherever appropriate? - cheers
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Old 14-04-11, 01:39 PM   #7
johnnyrod
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Default Re: Suspension question - twitchy under brakes.

Prob need new springs and thicker oil. The front is soft so sits too far down (saggy) so can unload a long way when you whack the throttle open. Add this to insufficient slow-speed rebound damping and it unloads too quickly. Emulators are good but mainly take care of comp damping, but also mean you can use thicker oil without screwing things up. I've heard people say just weld up the rebound holes and stick new springs in, personally I prefer a bit more finesse.
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