Marcos Peguero
Zone Head
Posts: 568
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posted May 14, 2004 05:34 AM
Handling
What are the upgrades that can be done to increase the handling of the zx12r.
Mine has good suspension setting, muzzy lowering link in the short one that raises the back, hyperpro rear spring, 1.5" lower the front.
Im thinking of replacing the front springs (190lbs).
   
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Otis
Needs a job
Captain Kickstand
Posts: 3028
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posted May 14, 2004 05:45 AM
You don't weigh enough to worry about having to replace the springs Marco.
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Marcos Peguero
Zone Head
Posts: 568
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posted May 14, 2004 06:09 AM
Its a model A.
Maybe putting more preload will better things up.
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jonwright
Needs a job
Posts: 2416
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posted May 14, 2004 06:12 AM
"Handling" is a very generic term. What in particular are you wanting to work on?
Turn in?
Mid corner stability?
Bump absorption during turns?
Trail braking?
What?
Do you still have your 200 tire on back?
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Marcos Peguero
Zone Head
Posts: 568
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posted May 14, 2004 06:36 AM
1- Turn in
Yes I still has a 200 in the back. Next will be a 190.
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Ninjaman12R
Needs a job
as a Deal's Gap tour guide.
Posts: 4767
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posted May 14, 2004 07:16 AM
The 190 should help your turn in.
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beansbaxter
Needs a life
Posts: 5911
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posted May 14, 2004 07:48 AM
ohlins on the rear and send ur forks off to racetech....that'll change things up good
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samzx12
Parking Attendant
Posts: 26
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posted May 14, 2004 07:49 AM
Yes the 190 will help alot. I will never use the 200 again.
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Marcos Peguero
Zone Head
Posts: 568
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posted May 14, 2004 08:26 AM
Cannot send anything to the US. the shipping will kill me.
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Marcos Peguero
Zone Head
Posts: 568
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posted May 14, 2004 08:29 AM
The bike has never changed the front forks oil.
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
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posted May 14, 2004 08:48 AM
Put some shimms in the rear shock mount. It will save you the cost of the Ohins... although the preload remote adjustment knob is a dream to use....
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D
Needs a job
Posts: 3365
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posted May 14, 2004 08:57 AM
I shimmed the rear shock about 1/2" after riding my bussies 02 model (I had an 01) and it made a huge difference.
I also had Racetech 1.0 springs in the forks and they helped alot.
One of the biggest things that helped the handling was the Brembo brake kit - I was happier with the handling improvement than I was with the braking (don't get me wrong, the braking was excellent).
At least service yer forks - that will prolly make more difference than ya think.
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tuusinii
Pro
Posts: 1031
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posted May 16, 2004 10:09 PM
quote:
The bike has never changed the front forks oil.
Change the oils. The bike has at least 3 years old oils in it!!! Also one thing You can do is have Your shock rebuilded(60-100EUR) or buy a new one (Ohlins or some other - expensive). Here You can find a little help to how to change the oils: http://www.hut.fi/~tuusinii/huolto/forkoil.html
But get also the service manual - if You don't have it.
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Hells Dark Lord
Needs a life
living life, and loving it.
Posts: 7981
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posted May 17, 2004 05:08 AM
190/50 or a 190/55 on the rear, and shim the rear, or get a Kennedy adjustable turnbuckle style dogbone on the rear so you can raise the rear ride height....maybe try a 120/65 on the front......I dont like dropping h forks in the front for turns.....JMO
____________
When in doubt, lean farther and go faster....
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n_pride
Parking Attendant
Posts: 15
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posted May 17, 2004 05:24 AM
How about a steering damper. Budd installed on on his. Said the front feels more stable in the corners and straights.
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koz
Expert Class
Posts: 304
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posted May 18, 2004 02:55 AM
The biggest (improvement) difference in handling, for me, was Dymag wheels. The reduction in un-sprung weight and rotating mass makes such a big difference.
Koz
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Marcos Peguero
Zone Head
Posts: 568
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posted May 18, 2004 12:17 PM
I have a hyperpro stering damper and It helps a lot in the mid corner on the street.
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Marcos Peguero
Zone Head
Posts: 568
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posted May 31, 2004 09:15 AM
Now , the bike like falls into the corners and its like it whants to dive into it.
I notice it, but It came aparent when I rode my friend xx bike and its very precise in the handling no abruptnes at all.
I will decrease the spring preload because its 2 hard and see what happens.
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zx12richard
Pro
The Green Monster..
Posts: 1133
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posted May 31, 2004 12:54 PM
Heres some chart help....
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Marcos Peguero
Zone Head
Posts: 568
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posted June 01, 2004 12:57 PM
The rear sag was 10mm!!! y puttet to 20mm and see how it feels.
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jonwright
Needs a job
Posts: 2416
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posted June 01, 2004 01:35 PM
Hmmm....you'd think that would help turn-in.
But going to a 190 tire will make a huger difference. If you don't ride to the bleeding edge of the 190 and want faster turn-in you could try a 180.
You MIGHT also try dropping the front end in the tripple tree.
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Marcos Peguero
Zone Head
Posts: 568
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posted June 02, 2004 04:15 AM
Jon
now the bike just dives in the turn in, I felt It was a bit unconfortable but I rode a CBR1100xx and see that the turn in is so smoth but not slow and lets you control the bike more.
If I put more sag the front will rise and the dive will be less (I hope)
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Hells Dark Lord
Needs a life
living life, and loving it.
Posts: 7981
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posted June 02, 2004 11:54 AM
the 180 will actually raise the ride heigth of the rear more than the 190....the 180 and the 200 are about the same heigth. Get the emasurments for sag off the web or call a good suspension tuner, then leave the prelaod alone for the most part. you compression and rebound dampening need to be played with. Otis turned in like 1 turn of preload in , or out of the front, I dont rememberwhich, but he said it was shit and put it back to where he had it....to little preload will make the bike wallow in corners, to much will push the front end and give you very little feedback....
____________
When in doubt, lean farther and go faster....
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jonwright
Needs a job
Posts: 2416
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posted June 02, 2004 02:19 PM
Yeah, once you set your preload don't foook with it. Then play with rebound and damping. The front ride heighth (NOT preload) should be done preferably on the track. Lower a few mm's, then again until it feels unstable. Then raise again. If you get a tank slapper exiting turns under power more compression in the rear.
It took me a while to find the suspension settings I liked with mine. But once I did it was tits.
And you WILL have front dive under braking on this bike. It's just too heavy to think otherwise.
There's a Sport Rider guide to suspension settings and advice on setting sag. Send me your Email address and I'll zap it to you.
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Marcos Peguero
Zone Head
Posts: 568
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posted June 03, 2004 04:16 AM
My front is lowered 1.8" aprox. and it does not feell unestable.
This is my plan, first set the rear sag and front sag.
then play with compresion and other settings.
My problem is 2 much dive (you feel like its going to fall sideways, 2 fast) and the bike gives you no feedback at the front.
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