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Have these forks on my Santa Cruz heckler, read the Marz guide for what air to put in the right leg and it states around 50psi for my weight. Tried it and they seemed as though there was too much pressure in bit to firm. So I have put n half that amount in, anybody know how to set these up properly??
Also the ETA on these is this just a lockout, it seems to reduce the travel and lock them out.
Any info on these issues greatly appreciated!
i have a z1 sport RV which is similar to yours....tbh i've never bothered to follow the manual and use what they recommend as its never been correct for me....
just carry on doing what you're doing and putting enough/ or taking out enough air until it feels right for you....as a rule of thumb your sag should be set at 25% of the overall travel of the fork
as for the ETA i had one another marzocchi fork and you're partially correct in that it works as a type of lock out...but what it does is when you apply the eta the fork will compress therefore shortening the length of the fork, which helps it climb better....however in this mode you still have around 30mm of travel to soak up any bumps...
ETA is more like a lock-down rather than lock-out. It reduces the travel to a minimum by closing off the rebound circuit at a certain height (I think). If you leave it 'on' overnight it will extend back as oil bleeds through it slowly. Better than a lock-out on older bikes as it steepens the angles up for climbing. Newer bikes with 74deg seat angles are better suited to lock-outs or pedal platform type adjustments which keep the angles static.
Some 'zocchi's of that era are air, some coil, some air-asist (which is a coil inside an air spring, the idea being that the coil does the work and the air is just to add preload and provide some progression. By not being 100% air the seals dont need to be as tight and so have less friction. The air assist often had silly pressures like 5psi in the +ve chamber, there was also a -ve chamber on some modles, IIRC it's offset from the center of the leg so you ony see it with the hole in the rebound adjuster in certain positions.
My experience was with Z150 RC2 forks, so possibly more bells/whistles/adjuster than yours. They were 'firm' though, not plush like some 'zocchi's.
Ok that makes sense, just read a little deeper into the fork and found out they are spring and air so no negative on them,, only needs a bit of air around 1 bar! Glad I didn't ride it 😯
If you need so much air to stop them bottoming out that the fork feels harsh and sits up in its travel then 5-10ml of suspension oil at a time into the RHS leg until you can get a plush fork that doesnt bottom.