forks are sagging - Honda RC51 Forum : RC51 Motorcycle Forums
 
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post #1 of 4 (permalink) Old 05-08-2013, 09:39 AM Thread Starter
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forks are sagging

hey guys have another question for ya. my sp2 has 15k miles and i hear you want to replace fork oil at about 12 and my forks have some sag in them and i can feel they are not quiet as good as they were. i have done some research on how much oil but cant get an exact answer. i hear 5 wt is best for stock forks and i hear 135 mm of oil. i wanna do it myself don't have the extra 300 for a shop to maintenance them.

is this what y'all would add to your stock forks and should i do the seals to? if so might just take to a shop. i hear just changing the oil isn't to bad of a task but when changing seals it gets tough if you don't have the right tools.


any advise will help thanks guys
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post #2 of 4 (permalink) Old 05-08-2013, 12:46 PM
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If you want to make it as easy as possible, then you can remove the fork, loosen the fork cap, drain the old oil, and work the cartridge to pump out as much residual oil in the fork as possible.

Then fill with the 498cc +/- 2cc of fork oil (for SP2 forks), then work the cartridge to purge the air out, then install and tighten the fork cap.
It won't be a perfect job as the forks won't be perfectly clean of any metal particles floating in the old oil remaining, but it will be quick with almost no tools needed.

Otherwise, you'll need some tools to fully disassemble the forks.
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post #3 of 4 (permalink) Old 05-08-2013, 03:00 PM
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Last fall, I did exactly what SubSailor just described. My springs were well within spec, my seals are still good, so I just wanted to get fresh oil and try a lighter wt.
I tried Motul 5wt fork oil, even though the Manual calls for 10w.
I hated the feel, never felt good to me. I lost a bit of confidence in cornering, and even had an off shortly after.
I switched back to Honda 10wt and my forks felt right again. I'm only about ~180lbs. I find the stock forks still carry more speed than I can.

John, 2000 RC51 #000100

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post #4 of 4 (permalink) Old 05-08-2013, 06:59 PM Thread Starter
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Great thanks guys I will go with the 10 wt. I'm 180 as well and the seals look good also.
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