Rock Shox Reba 07 bottoms out, pls help...

[h4tch3t]

Hi all,

 

Recently bought a brand new Scott Spark 30, came with a Rock Shox Reba (white one). The shock itself was fine, did the Magalies 65, and a bit of practice riding on northern farms.

 

Anyways, long story short, last weekend we went for a ride on Northerns, and despite the terrain not being as rough, the shock locked up halfway through it's travel. Why I dont know. It's new, had air in both sides and was working perfectly well.

 

Took it back to Cajees in Hendrik Potgieter, and I was told the seals are gone, and that new ones would be ordered from their supplier. (ETA Two weeks)

 

How would seals possbly be the issue for a complete lockout halfway through the travel?

 

If anyone has some tips for checking or fixing it, I'll gladly listen.

 

Thanx

 

[Shebeen]

brand new, but the shocks two years old... how does that work?

[h4tch3t]

Uhm, it works as follows:

 

 

 

1) Cajees gets bike from supplier in late 07/08

 

2) Nobody buys bike cos it's expensive

 

3) It hangs around the shop for most of 08/09

 

4) The customer (me) comes in and buys it at reduced cost due to it being an older model in late 09

 

 

 

Hence brand new (never ridden) but 2 years old?

 

 

 

Hope that made sense.

 

 

 

 

 

 

[Johan Bornman]

Complete lockout is compression damper problem (motion control). It can be inspected and tested without opening the rest of the fork.

 

Bring it over, I'll give it a lookover.

johan@yellowsaddle.co.za

[Johan Bornman]

Uhm' date=' it works as follows:

1) Cajees gets bike from supplier in late 07/08
2) Nobody buys bike cos it's expensive
3) It hangs around the shop for most of 08/09
4) The customer (me) comes in and buys it at reduced cost due to it being an older model in late 09

Hence brand new (never ridden) but 2 years old?

Hope that made sense.


[/quote']

 

The Americans call that NOS - New Old Stock.

 

Your topic title and description of the problem contradicts each other - bottom out and lockout are at two opposite parts of the spectrum.

 

 

[techguy]

Try letting all the air out of both chambers and repump them, top side first, to the reccomended pressures. If its stuck halfway thru the travel its more likely an air chamber problem than the damper side. I had it recently with a new reba on crater cruise the customers fork became very stiff and lost half the travel.

 

Cajees may be right, if a fork sits in the shop for two years the air seals can deteriorate and air can move between the positive and negative chambers and efectivley "locking" the fork as there is more air in the negative chamber than there should be...

[Weight Weenie]

Johan is this a comman to Reba problem or is it a motion control issue?

[Johan Bornman]

Johan is this a comman to Reba problem or is it a motion control issue?

 

The Reba does suffer from a sticky Motion Control Damper but apart from that, all forks can suffer from lockout. The lockout mechanism on all oil-damped forks is a one-way valve that closes the compression damper so that fluid cannot be pumped past it and the fork goes hard, or close to hard, since even fluid is compressible and rock-solid lockout is difficult to engineer.

 

The OP was vague in his description of the problem, hence all the theorising and guessing going on.

 

 

 

[h4tch3t]

Hi,

 

 

 

Sorry for the contradicting post, but yes, as someone mentioned, NOS "New old stock".

 

 

 

I mentioned bottoming out and lockout cos I get a really hard type of "clang" sound when the shock eventually hits the no go point halfway through the travel. I don't really know what the exact condition is called. Suppose I could be technically challenged.

 

 

 

I have since dropped the fork off for service, and should get it back next week. According to many of the forums I've read so far, this seems to be a fairly common issue on the REBA's, and could easily be fixed.

 

 

 

I would however like to know what the possible causes for this condition could be?

 

 

 

Maybe I stuffed it up unknowingly?

 

 

 

Thanx