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Rear suspension troubles (lemmy.dbzer0.com)

submitted 3 months ago by [email protected] to c/[email protected]

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Hey all, do we have any suspension nerds here?

I have some annoying troubles with the rear suspension on my 2017 Focus Vice trail bike. The shock is Rockshox deluxe select R with max tokens inside and 250psi air pressure (~20% sag)

Long story short, I keep bottoming out the rear suspension regularly on jumps and drops way easier than I'm comfortable with, but with the amount of pressure in the shock the ride starts feeling pretty harsh as well

So what I've thought as options, but might need some more validation:

bigger bike and/or bike with more progressive suspension curve

Eh, don't really want to replace bike I otherwise love

different shock?

Not sure what I would look there tbh, also gets pricy but not as bad as a whole new bike

messing with the shock tune

The shock doesn't have externally adjustable high/low speed compression, but perhaps could adjust the shim stack? This is completely alien stuff for me so some ideas/advice would be appreciated

there's a megneg air can upgrade kit available for the shock

This increases the negative volume giving more mid-strike support, plushier initial feeling and more bottom out force using less tokens as claimed by rockshox. This upgrade kit is not terribly expensive, but is it worth if I'd better be going with a new shock anyways?

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[–] [email protected] 3 points 2 months ago

Technique, body weight, and the suspension adjustment are your options. Otherwise like you indicated you may need a shock with greater travel or aggressive compression curve options to send the features you're bottoming out on. If you have people sending the same features and not bottoming out you can compare your differences in setup.

Might just be landing a bit rear heavy, though if you've got 130mm up front you'll need to find a good balance.

[–] [email protected] 1 points 3 months ago (1 children)

When was the last time the shock was serviced?

Has it always bottomed out?

You say the sag is 20% but who set it? Are you confident that is the correct sag settings?

[–] [email protected] 1 points 3 months ago (1 children)

When was the last time the shock was serviced?

I did 200h service couple months ago, but I'm not sure of the services done before that. Bought the bike last summer

Has it always bottomed out?

Eh, yeah I've been progressively been hitting bigger jumps past year back on the bike, and gone from 190 -> 250psi on the shock to compensate

You say the sag is 20% but who set it? Are you confident that is the correct sag settings?

Set by me with riding gear on. I've been messing a bit with the shock testing different sag last year and also with air volume reducers (tokens) and running the maximum tokens at the moment (3.5 if I recall correctly)

[–] [email protected] 2 points 3 months ago

Honestly it sounds like the shock is toast. I'd take it to your LBS and see if they have a shock guy who can rectify it. That will be cheaper than buying a new one. If you're mechanically inclined you could do it too but you'd need a bunch of specialized tools. They might open it up and find something easy to fix is broken, like an o-ring. Or they might tell you it's toast but at least you'll know for certain.