Marzocchi MX Comp air pressure?!?!

Tloubet · Jul 22, 2006

I have the 85mm Mx comp from 2005.
Seems like I have to ride with EXTREMELY low air pressure to make the fork soft enough--we're talking below 20lbs. Manual recomends something like 70, at which point my fork is completely rigid. Even at 18lbs or so, I wish it were softer.
I weigh 165, so I'm not exactly small.
Any thoughts?
Does everyone use the same pressure in both fork legs?

Thanks
-Thom

Call_me_Clyde · Jul 22, 2006

Is it preload?

If you have the same fork I do, it would be the MX Comp Coil 85mm. This fork is different than the other MX Comp forks in that it has a schraeder valve under BOTH top caps on the fork, and has no ETA dial. If this is the fork you have, your air adjustment is a preload adjustment, and should be set at a very low pressure. The manuals are notorious for being difficult to understand, especially since they typically use the same manual for severl versions of the fork (e.g MX Comp coil, MX Comp w/ETA and MXPro all probably use the same manual).

Bob

Tloubet · Jul 22, 2006

Thanks

Great. Thanks.
Yup, same fork.
I know it should be low pressure, but Jeez, it's almost nothing at all.
Well, I guess I'm not crazy.

Call_me_Clyde · Jul 22, 2006

I had the same issue

Tloubet said:
Great. Thanks.
Yup, same fork.
I know it should be low pressure, but Jeez, it's almost nothing at all.
Well, I guess I'm not crazy.

It takes less than 15 lbs typically. I was surprised, too.

perttime · Jul 22, 2006

Call_me_Clyde said:
it would be the MX Comp Coil 85mm. This fork is different than the other MX Comp forks in that it has a schraeder valve under BOTH top caps on the fork, and has no ETA dial

Actually, my MX Comp Air 105mm has schraeder valve under BOTH top caps on the fork, and has no ETA dial. The pressures in the manual seem to match reality pretty well.

According to the manual, 0 - 15 psi is the correct range for MX Comp Coil preload. I have seen Marzocchi call their Coil models "air assisted".

In any case, you should check the sag to get the pressure right.

Call_me_Clyde · Jul 22, 2006

I stand corrected

perttime said:
Actually, my MX Comp Air 105mm has schraeder valve under BOTH top caps on the fork, and has no ETA dial. The pressures in the manual seem to match reality pretty well.

According to the manual, 0 - 15 psi is the correct range for MX Comp Coil preload. I have seen Marzocchi call their Coil models "air assisted".

In any case, you should check the sag to get the pressure right.

Thanks for the clarification.

Bob

Jodiuh · Jul 23, 2006

Tloubet said:
Even at 18lbs or so, I wish it were softer.
I weigh 165, so I'm not exactly small.
Any thoughts?

I weigh 160 and own a 2006 MX Comp ETA/TAS 105mm fork. Using the Marzocchi low pressure shock pump, I throw in about 12psi for the perfectly plush ride. I haven't messed with internal rebound, but I'm extremely happy with the fork. When I first starting riding in it, the 45lbs of recommended pressure turned it into a pogo stick and the resulting blood loss turned my sock pink. :madman:

My advice would be to heed the call to sag as perttime suggested. Also, snag a low pressure shock pump (easier to dial in and read adjustments) and make adjustments on the trail!

Here's a couple threads you might find useful on this subject:

Setting up Marzocchi MX Comp Coil
2006 Marzocchi MX Comp ETA - Air Preload Info

Reposado Man · Jul 24, 2006

Yep, thats my experience with my MX120 also -- the manual's pressures are way overstated.

I've read some folks on here ride theirs with NO air in the chamber. I pretty much pump mine up just until the gauge starts to budge.

Marzocchi MX Comp air pressure?!?!

Tloubet

Call_me_Clyde

Tloubet

Call_me_Clyde

perttime

Call_me_Clyde

Jodiuh

Reposado Man

Top Contributors this Month

Recommended Communities