Hello Gyus,
I'm a complete begginer and just a week ago got an old Bomber Z1 FR SL 2003. Can any of you give me some advice how to setup it ?
Setting up positive pressure according to manual makes this fork much too stiff. I'd like it to work rather sensitive, my wieght is 75kg. Should I have the same pressure in both legs (positive) ? What negative should I use (in relation to positive) ?
I hope you'll have some advice for me
First of all the air pressure charts are really jacked (as you have discovered). They messed up the conversions to PSI. Here are what the recommended ranges should be in PSI:
Negative air pressure: 72-217
Positive air pressure:
Up to 154 lb rider: 29-40
Up to 175 lb rider: 35-45
Up to 209 lb rider: 42-55
Up to 242 lb rider: 52-94
Progressive Air Pressure (PAR lower leg): 0-42
The upper ports, offset valves on each leg are positive pressure, the one center port is negative pressure.
The one lower leg is PAR which is a bottom-out assist of sorts.
This seems to be the most legitimate advice from those that have taken the time to experiment for an extended period with this fork:
Set the negative air to get the ride height you want (73psi+) NOTE from Chris: this makes sense because negative air starting point is 72 PSI.
Set the positive air get the sag you want
Set the PAR 30psi more than the positive air NOTE from Chris: not sure about this one as max PAR recommended on this fork is 42 PSI.
Adjust compression and rebound to taste
The bottom line I got from multiple discussions is that that Marzocchi did a poor job of supporting this fork with good setup instructions. However, it can be set up to an infinite variety of tastes and just takes a lot of tweaking to get it dialed. If you get it dialed for your weight and riding style, it is supposed to be pretty good for a fork of that vintage.
