Marzocchi Drop Off Issues

0pascoe0

I got a 2005 stinky with these forks and they are making the sound when they top out. One of the guys in my local bike shop has the 2006 stinky and he had the exact same problem with his forks. He replaced the oil to some thicker oil and the problem was fixed. The sound was gone and they didnt top out any more. I dont know what oil he used but it was thicker than the one that comes with the fork. Hope this helps.
XXX Tom

fly_norco

I just checked the Marzocchi Site and their oil level (2005) table doesn't show the Drop-Off model at all.
http://www.marzocchi.com/spa/mtb/pr...Sito=mtb&Y=2005
But the 2004 does:
http://www.marzocchi.com/spa/mtb/products/oillevel.asp?LN=UK&Sito=mtb&Y=2004

Since it's an air-based fork, I'm not sure that the oil weight would have much effect on this model, but it's worth a shot. Looks like stock oil weight is 7.5w, so anything more than this would make it rebound slower.

I would be interested in contacting this shop you mentioned to chat with them about the solutions they found.

I was also going to call Marzocchi and ask them about the issues with it, since it sounds like a very prominent problem. However, the number that the site gives for tech is out of service.

0pascoe0

I looked on the link and i agree that the fork is not on the oil level chart but neither is it on the air pressure chart and it is an air fork. This fork does not appear much in the site so i think they may have just left it out.

The other day when he saw my bike the first thing he said was "change the oil straight away". It obviously improves the forks performance otherwise he wouldnt have said it.

I think you should phone marzocchi and see what they suggest and post the answer.

ozmtbpunk

re. R-30psi/L-5psi. Hope its just a typo. The left leg is the positive air side. Its the one you can put the higher psi into. The right leg is the preload side so you shouldnt really have any more the 15 psi in it. Maybe thats part of your problem. Mine made the same clanging noise on topout. Right leg has the internal rebound ajust. slow it down and that should work. thicker oil to if ya want.

fly_norco

Below is info from 'Kona Casey' from another thread. I haven't tried it, but tomorrow I will be headed to the hardware store for the 12mm x ? wrench.
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hey i also had the clanking problem with my drop off 4 on a kona coiler if you let the air out of both fork legs and remove the top of the right leg you can compress the fork all of the way remove the spring and use a 12mm ''L'' type allen wrench to adjust the rebound. The adjuster is of course all the way at the bottom of the upper leg but my 12mm allen from the hardware store works fine. any way i am about 190 and ride hard big drops ect. i turned the rebound all the way counter clock-wise untill it stoped closing it. now the more air you put in the shock the more dampining you will need (less turns in the clock-wise direction) 1 full turn clock-wise is where i would start then work your way back to close (counter clock-wise) my set up is 1/4 turn open (clockwise from closed) with 50 in the right and 9 in the left. good luck. P.S. I am thinking about a heavier oil in mine later ill let you know
- Kona Casey
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fly_norco

Actually, while sitting on the bike, left is the rebound side and should never be set to more than 15psi. And respectfully, the right side is the positive side, set it up to 60 if you want.

Since it appears that the internal rebound valve is set completely open from the factory, I've decided to follow the process of closing it down with the 12mm wrench (I'll post how that goes once I've tried). But for now I've resolved to L-0/R-25, and it's much better. (And I'm still pushing 190lbs.)

ozmtbpunk

Gonna have to disagree with you Norco. Im looking at the manual right now. Hope we're talking about the same fork. Mine is 06 drop off triple. The manual says the left fork is the positive air side(most psi) and the right is the preload(no more than 15psi).

fly_norco

I just checked in the 2006 manual:
http://www.marzocchi.com/admin/down...IDOggetto=28114
(Page 11 & 45)

And compared it to the 2005 manual:
http://www.marzocchi.com/admin/down...&IDOggetto=8370
(Pages 9 & 37)

Looks like in 2005 They're calling the left leg 'preload' and the right 'positive air'. However, in the 2006 model they've switched it.

My first thought is that someone made a mistake in print, but I think this warrants a call to Marzocchi to find out if they really did change the legs between these two years.

I'll post when I find out.

ozmtbpunk

I'll be seeing my mechanic tomorrow so I'll make sure. He wasnt there when I rang a couple hours ago but I spoke to the owner of the shop and he said they change that sort of thing all the time from year to year. Yo my mechanic put an extra spring in the rebound side(so one on top of each other) so now its comparable to a junior T. Much better, totally different fork. You should do that till you can get a new setup.

konaman132

Yes they did on the 2006, they switched it. I thought that there was something wrong myself, but it is true. Mine needed to have more oil put in it. Now it is working pretty sweet for a drop off.

eyedfy

Well, I ended up changing the oil, and it didn't help in supressing any of the noise OR making the rebound better. So, I ended up buying a Zoke 66 rc2x. Now, everything is OK .

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