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Old 08-25-07, 07:17 PM   #1
norco_rider77
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forks top out hard

hey, my forks are topping out really hard. ive adjusted the rebound to the lowest setting, but it doesnt do anything. its a 2007 Norco Katmandu, the forks are some XC version of Suntours. i do some light dirt jumping, but mainly trials and some trail riding. thanks for the help!
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Old 08-25-07, 07:47 PM   #2
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Do you mean they get really stiff during descents?

or

When you left the front end they kick?

In both cases this has to do with low end damping. I know with low end marzocchis the fix has been two fold. Expand the flow hole for the oil to move quicker and change the oil density. I really don't know if this would be an option for sutours, sorry.
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Old 08-25-07, 08:02 PM   #3
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thanks for the help, and ya, when i pull up they kick, so its really annoying when a hop, cuz it sounds like my bike is a peice of ****
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Old 08-26-07, 08:27 AM   #4
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I have the same issue and it drives me crazy...though I really need a new bike cus mine is becoming a piece of sht.
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Old 08-26-07, 09:47 AM   #5
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Fork doesn't equal bike. It sounds like both your forks have poor damping. Higher end forks don't do this usually
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Old 08-26-07, 10:29 AM   #6
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I have the same problem but my fork is a crappier manitou from '98.
Whenever I go to bunnyhop something and pull up on the fork, I get a big "clunk".
I would care a little more if it was a newer fork.
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Old 08-26-07, 03:28 PM   #7
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well the forks definitly arent that good, and it hasnt helped that abuse them as much as i do, but theyre still under warranty, do u think that will cover it? i think my spring is just dostreyed
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Old 08-26-07, 03:55 PM   #8
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well the warranty may give you a new crappy fork that will still top out ... good luck on that.
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Old 08-27-07, 11:19 AM   #9
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o well, as long as its not as loud and painful sounding
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Old 08-27-07, 11:31 AM   #10
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I don't know about this particular fork but topout noise is usually due to worn-out or cracked top-out bumpers (a small elastomer bumper that cushions metal-on-metal contact). This would be the first suspect in my list of culprits to check (or have a shop check for).

It's going to be part no. 10 on this exploded view:
http://www.srsuntour-cycling.com/cus...=Exploded+view

Edit - - crap, link doesn't work that way. Click this: http://www.srsuntour-cycling.com/SID...tail&tnid=1228
and select the Exploded View PDF.

BTW, your Suntour XCT 75 doesn't have damping - - only spring preload.
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Old 08-27-07, 03:28 PM   #11
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that helps, thanks, next time i go to my LBS, ill get that checked out
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