Ceriani cartridges?

The F750 monocoque spaceframe and P86 have KONI damper assemblies . Konis some say are archaic nowadays .

pommie john said:

You can get race tech emulators for Ceriani forks. There are quite a few places in Aus who sell them and fit them.

However I used a place in Melbourne which I wouldn't recommend to my worst enemy. He was 'kin useless. Took ages and charged me for parts he didn't fit.

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I remember from a pic that Daveamb posted in another thread, his damping internals are very basic, and would need some better control of rebound damping. As far as I understand from Race Tech, cartridge emulators control compression damping, and rebound damping is adjusted by changing the oil viscosity: http://www.racetech.com/page/title/Emul ... hey%20Work

If there are shops in Aus that fit them, they should be able to do what is necessary to improve rebound damping as well as fitting the emulators. That would probably be the simplest and most cost-effective solution.

daveh said:

pommie john said:

You can get race tech emulators for Ceriani forks. There are quite a few places in Aus who sell them and fit them.

However I used a place in Melbourne which I wouldn't recommend to my worst enemy. He was 'kin useless. Took ages and charged me for parts he didn't fit.

Click to expand...

I remember from a pic that Daveamb posted in another thread, his damping internals are very basic, and would need some better control of rebound damping. As far as I understand from Race Tech, cartridge emulators control compression damping, and rebound damping is adjusted by changing the oil viscosity: http://www.racetech.com/page/title/Emul ... hey%20Work

If there are shops in Aus that fit them, they should be able to do what is necessary to improve rebound damping as well as fitting the emulators. That would probably be the simplest and most cost-effective solution.

Click to expand...

I think the Marzocchi and Ceriani are similar internally. My Marzocchis have just one hole that does the rebound damping and a ball bearing check valve to separate the rebound from the compression damping. You can adjust the rebound damping with the oil viscosity or by drilling out the rebound hole bigger, or by filling it in and re drilling it smaller.

I'd talk to Suspension Improvements in Slacks Creek Qld .

daveh said:

I remember from a pic that Davamb posted in another thread, his damping internals are very basic...

Click to expand...

Basic! That's being rather too kind. As far as I can determine there's no damping at all for the first couple of cm, it just floats on the spring. This may or may not be intentional, but it's not a recipe for a stable setup. I have bought some proper fork oil, both 10 and 20 weight, and experimented with different amounts and mixes and ended up just putting straight 20 in.

bsaboss said:

Can I ask what model Ceriani forks you have fitted on your Commando?

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I've no idea Bill, there's no model information on the forks anywhere that I can determine. Might have been once, but perhaps ground or polished off long before the bike came to me.

I've had a response from Chirs Cosentino who requested more information. I'll have to pull a fork leg apart and take some measurements. A weekend task.

And back by popular demand - shots of the bits in the fork:

pommie john said:

I'd talk to Suspension Improvements in Slacks Creek Qld .

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Good suggestion from pommiejohn. Why not send this guy some photos and dimensions, ask him if he would be willing to take on the job and what would be involved. There is not much you can do with the damper piston. The later Cerianis had deeper pistons with piston rings, and rebound check valves. He should be able to make or modify the necessary parts or he might have internals from other models that he could adapt. After that, fitting the emulators is simple. You can then tune your compression damping via the little preload nut on the emulator and play around with different grades of fork oil. It would be a big improvement on what you have at the moment.

Ok, thanks Dave and John, will send Suspension Improvements an email - see what they've got to say.

Thanks for the picture. I've no idea what the internals of mine look like. If I get time on the weekend I'll pull one apart and post a picture.