2015 marzocchi 48 changes
- Thread starter Simmo737
- Start date
Simmo737
Gold Level Site Supporter
The cart appeared easier to bleed and didn't gurgle when turned upside down and stroked.
New base valve stack
12 .1
32 .15x2
26 .25 (no, that's not a typo)
24 .1
22 .1
20 .1
18 .15
11 .2x2
I went to:
24.1
32.15x3
26.25
16.1
24.1
22.1
20.1
18.1
11.2x2
It stops the late spike, and has the whole stack moving quicker, better grip and much better square edge performance.
I'd bet my bile duct that the mid is softer and rebound firmer than previous, so far no need to touch, may need to up the springs though.
New base valve stack
12 .1
32 .15x2
26 .25 (no, that's not a typo)
24 .1
22 .1
20 .1
18 .15
11 .2x2
I went to:
24.1
32.15x3
26.25
16.1
24.1
22.1
20.1
18.1
11.2x2
It stops the late spike, and has the whole stack moving quicker, better grip and much better square edge performance.
I'd bet my bile duct that the mid is softer and rebound firmer than previous, so far no need to touch, may need to up the springs though.
Interesting. Same stacks as '14 with the exception of the 26.25 obviously. Spring seat looks the same too and mine are always falling down when I'm trying to bleed them. Good to see the factory is listening and machining reliefs into the bush landing now, that saves $100 off the revalve bill.
Given you're the same weight as me I'll be watching this with interest. My forks were pretty good last ride, really showed the shock up as being too soft, especially in LSC.
Given you're the same weight as me I'll be watching this with interest. My forks were pretty good last ride, really showed the shock up as being too soft, especially in LSC.
Jakobi
Super Moderator
True that Mick! Just gotta set some time aside to open the KYBs up. Probably should do that soon. On holidays again in a week, so if the stars align the parts should arrive and I should be able to put some seat time down and get them fine tuned. Braap.
Does look like the spring perches were hand worked. I'd just clean the burred edge a little. I don't like what a small amount of swarf can do (not that it should rub on anything once assembled, but never the less).
Be interested to see what mid changes they've implemented.
Does look like the spring perches were hand worked. I'd just clean the burred edge a little. I don't like what a small amount of swarf can do (not that it should rub on anything once assembled, but never the less).
Be interested to see what mid changes they've implemented.
twowheels
New member
I've got a set of '13s on the bench right now that has the land relief and the witness marks on the back of the bushings. The spring seat cut-outs were gnawed by a rabid gopher on these as well.
There are some other characteristics that I need to run to ground but I'll share them when I get them sorted.
There are some other characteristics that I need to run to ground but I'll share them when I get them sorted.
motopsycho87
New member
What is actually the purpose of the relief on the bush landing? To stop it binding in case there is a tiny lip there pushing the bush outwards?
The reliefs are there so the upper bush can twist/rock back and forth whilst the lower tube is flexing, especially when it is operating near the lower triple clamp.
Without the relief machined in the bush can't twist on the tube meaning when the fork tube flexes back and forth during compression/rebound the bush can/does bind on the upper tube causing harshness and more importantly wear.
Simmo737
Gold Level Site Supporter
I haven't looked at the mid and rebound, I'm happy so far, was supposed to ride today at cessnock but it got canned due heat and other commitments, hoping to ride somewhere on Sunday.
I put .46 and 5.6 springs in and with that stack I posted it feels unreal, as is the jetting, I'm gutted the ride was called off.
Cheers!
Simmo737
Gold Level Site Supporter
Same rebound piston valving
Reb
12.1
20.1(2)
18.1
14.1
11.25 collar
Mid
12.1
20.15(2)
11.2(2)
15.15
16.15
18.15
1.9mm gap for.65 float
I decided to try a shuffle first that makes it easy for everyone to do...so
Take I 20.15 from the mid and replace the 2 20.1s in the rebound with it, add one 20.1 above the remaining mv 20.15 and place the other at the bottom of the stack.
You get
Reb
12.1
20..15
18.1
14.1
11.25 collar
Mid
12.1
20.1
20.15
11.2(2)
15.15
16.15
18.15
20.1
1.9mm gap for.60 float
You can then wind in anywhere from 2.25 pfp up and you get the effect of the rebound bubble closing sooner and more effective reb in the early part of stroke with higher preload which means lovely grip!!! Still very plush and stays up in stroke, no dive at all when you chop the throttle and normal amounts when braking hard. I'll test it next week on a long ride and report back.
As Steve beane recommends, service the fork early. the stock oil is just ok and Iv had two bikes with these forks and neither were bled properly resulting in fast oil destruction, I use maxima 7wt blue bottle and it's the exact same cst and ultra high quality.
IMHO these forks need a minimum of 5mm of preload to work and one rate spring lower than you'd use on a 4t eg 220lb 4.6 they also like mv free bleed so your reb stack needs to get The clicker as open as possible for smooth mv action.
The shock is unreal.
Reb
12.1
20.1(2)
18.1
14.1
11.25 collar
Mid
12.1
20.15(2)
11.2(2)
15.15
16.15
18.15
1.9mm gap for.65 float
I decided to try a shuffle first that makes it easy for everyone to do...so
Take I 20.15 from the mid and replace the 2 20.1s in the rebound with it, add one 20.1 above the remaining mv 20.15 and place the other at the bottom of the stack.
You get
Reb
12.1
20..15
18.1
14.1
11.25 collar
Mid
12.1
20.1
20.15
11.2(2)
15.15
16.15
18.15
20.1
1.9mm gap for.60 float
You can then wind in anywhere from 2.25 pfp up and you get the effect of the rebound bubble closing sooner and more effective reb in the early part of stroke with higher preload which means lovely grip!!! Still very plush and stays up in stroke, no dive at all when you chop the throttle and normal amounts when braking hard. I'll test it next week on a long ride and report back.
As Steve beane recommends, service the fork early. the stock oil is just ok and Iv had two bikes with these forks and neither were bled properly resulting in fast oil destruction, I use maxima 7wt blue bottle and it's the exact same cst and ultra high quality.
IMHO these forks need a minimum of 5mm of preload to work and one rate spring lower than you'd use on a 4t eg 220lb 4.6 they also like mv free bleed so your reb stack needs to get The clicker as open as possible for smooth mv action.
The shock is unreal.
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