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post #1 of 4 Old 12-14-2012, 12:08 PM Thread Starter
 
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upgrade new suspensions

Hey 97 cbr900rrv. I am wanting to know what front springs to use and oil u guy prefer I'm 6ft 3. 245lbs I have the rear set good but at my Weight I'm loosing travel. So shop tech recommended I swich springs in front and add thicker oil any ideas? Thanks. Oh I thank u for the hekp with the rear tail plastics so far they are same bolt locations so I just need to get rear fenders lft an rite. Then find atail light under body kit witg turn sigs in the tail/brake I seen one on ebay so ill see but that and a rear hugger would really compleat the look.
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post #2 of 4 Old 12-14-2012, 12:18 PM
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Re: upgrade new suspensions

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Originally Posted by ragecage8966 View Post
Hey 97 cbr900rrv. I am wanting to know what front springs to use and oil u guy prefer I'm 6ft 3. 245lbs I have the rear set good but at my Weight I'm loosing travel. So shop tech recommended I swich springs in front and add thicker oil any ideas? Thanks. Oh I thank u for the hekp with the rear tail plastics so far they are same bolt locations so I just need to get rear fenders lft an rite. Then find atail light under body kit witg turn sigs in the tail/brake I seen one on ebay so ill see but that and a rear hugger would really compleat the look.

I would not increase the oil weight above 10W.
By "losing travel" you mean the forks are bottoming out under brakes?
Have you tried reducing the air gap by putting some more oil in?

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post #3 of 4 Old 12-15-2012, 7:59 AM
 
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Re: upgrade new suspensions

Can you still use the preload adjusters to get satisfactory static and rider sag? If not you may need stiffer springs for optimum performance, as you are relatively heavy compared to the typical rider and anyway those springs are old and may have fatigued / sagged a bit by now.

Any susp tech will be able to tell you what fork weight to get, at your weight I guess (total guess) something like a 0.95 to 1.05kg/m linear spring would see you right, especially if you don't take passengers.

Use whatever oil the spring manufacturer recommends, change the springs and you'll need different oil than stock in many cases.
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post #4 of 4 Old 12-15-2012, 7:12 PM Thread Starter
 
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Re: upgrade new suspensions

thanks bladracer, i'll try that first, if that dont work i'll go to installing new springs, are all the fork oils at 10w pretty much like oils, find one that works for you and go from there,>?
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