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Griso Suspension settings thread!

GTM®

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GT di Razza Pura
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Jul 1, 2009
Messages
13,511
Location
Malibu
Merged thread started with the post below...

New Griso owner here. Last week I bought a brand new '07 from Moto International; trading in my '04 Stone. Thanks to Todd, I was able to get my Stone suspension set up pretty well by installing YSS shocks and adjusting sag, front and back. I have no experience with rebound or compression adjustments on the front since Preload was all that was adjustable (using spacers). I was able to dial in rebound damping in the rear with the YSS shocks.

dgreenwood continued with... I've read the suspension topics here and learned that the stock settings are likely pretty bad and that the first step is sag. My problem is that I want to ride this weekend and won't have the ability to adjust for proper sag before that (I don't have anyone to help or the ability to lift the wheels off the ground for measurement). I definitely plan to do this right when I have time, I'm just trying to figure out if there is anything I can do to make this weekend more enjoyable without going through the full and proper measurements.

I found some rebound and compression settings on this site. Is it advisable for me to adjust to these without doing sag first, with the understanding that I'll start over from scratch and do it right eventually? Or am I better off riding stock until I have the ability to do it right?

Front wheel travel: 120 mm (4.7 inches)
Rear wheel travel: 110 mm (4.3 inches)

Target laden (you seated on the bike) sag:
Front: 36~39.6 mm (1.41~1.55 inches)
Rear: 33~36.3 mm (1.3~1.42 inches)

My stats:
I'm about 200lbs fully geared
I've adjusted my tire pressure from 33/36 to 36/40 after reading that the service manual recommendations are likely low.

These are the settings I found here and am contemplating using before I leave this weekend:
Front
compression: 1/4 T (stock: 1 T)
rebound: 2 1/4 T (stock: 1.5 T)
preload: 5th mark (stock: 4th)

Rear
compression: 1/4 T (stock: 1.5 T)
rebound: 40 clicks (stock: 17)

Any thoughts you can offer that may improve my weekend would be greatly appreciated.

Edit: Clarified that I have experience with adjusting rebound damping in the back but not front.
 

Ad B

Cruisin' Guzzisti
GT Contributor
Joined
Nov 7, 2010
Messages
281
Location
Sint Oedenrode
MY STANDARD SETTINGS:
Front:
hight: 4 stripes above top plate (without orange cup).
sag: ?? mm (springtension, preload 4 -5 rings)
compression: 1 turn
rebound: 1.5 turn

Rear:
sag: ?? mm, spring lenght 161 mm
compression: 1.5 turn
rebound: 17 clicks

My settings, on recommendations by Mile Pajic, a very experienced motorbikeracer (from 125cc till endurance).
Standard components.

Front:
hight: 4 stripes above top plate (without orange cup).
sag: 35 mm (springtension, preload 5.5 ring)
compression: 1 turn
rebound: 1.25 turn

Rear:
sag: 37 mm
compression: 0.25 turn
rebound: 42 clicks

my weight is 72 kg (158.7 lb)
Most of time solo use

Ad B
 

hugzy

Tuned and Synch'ed
Joined
Aug 6, 2010
Messages
39
Location
Zonnemaire, NLD
Which screw is the compression screw and which the rebound on the front forks and which on the rear shock ?
never really known for sure ?
 

Mark111

Cruisin' Guzzisti
GT Contributor
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Sep 21, 2010
Messages
161
Location
Berowra, NSW
hugzy
Have a look in the owners hand book it is clearly outlined there including pictures.
If you haven't got one download one on the Downloads tab above.
 

gulveal

Tuned and Synch'ed
Joined
Oct 2, 2009
Messages
76
Location
Cornwall, UK
Here's my current settings:

Front:
  • Protusion: 6 rings;
    Preload: 4 rings;
    Compression: 1.5 turns out;
    Rebound: 0 turns out.
Rear:
  • Preload +4.5 turns from stock;
    Compression: 2.5 turns out;
    Rebound: 17 click out.
My Weight: 100Kg (220lb).
Solo use.

Regards,
David
 

gvw

Tuned and Synch'ed
Joined
Sep 14, 2011
Messages
71
Location
Orlando, FL
Marzocchi RAC USD 43dia -Use and Maintenance Instruction Manual



(compressed with 7-zip)

Section 5 has the adjustment instructions.

Adjusted my compression and rebound to the 110kg person settings - Double.D. Was surprised how easy it was - should have done it a while ago. Most noticeable was how much it smoothed out the ride - well worth it. Will have a go at sag this weekend when I can find a few more hands.

The rear shock is a Boge/Sachs unit (??) but in a quick search, did not find the user manual, anyone else have any better google skills? Looks to come from Sachs Automotive Italia S.p.A. but did not find the right model.
 

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hugzy

Tuned and Synch'ed
Joined
Aug 6, 2010
Messages
39
Location
Zonnemaire, NLD
Mark111 said:
hugzy
Have a look in the owners hand book it is clearly outlined there including pictures.
If you haven't got one download one on the Downloads tab above.

Hi Mark, My owners manual only shows the rear shock and it tells you how the front fork comp' and rebound should be set but not which screw is what but I'll download the manual on here and have a look. Cheers.
 

draidt

High Miler
GT Contributor
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Sep 22, 2009
Messages
977
Location
Hernando, FL
hugzy said:
Mark111 said:
hugzy
Have a look in the owners hand book it is clearly outlined there including pictures.
If you haven't got one download one on the Downloads tab above.

Hi Mark, My owners manual only shows the rear shock and it tells you how the front fork comp' and rebound should be set but not which screw is what but I'll download the manual on here and have a look. Cheers.

These pictures are from the manual that I have and the setup is clearly explained.

The forum download is the Great Britain manual, My manual is the USA- Canadian version.

Just click on the pictures for a larger size
 

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hugzy

Tuned and Synch'ed
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Aug 6, 2010
Messages
39
Location
Zonnemaire, NLD
Thanks for that Dan, the manual I have doesn't explaing the adjusters as well as this one. I'll have another go ! Cheers.
 

gvw

Tuned and Synch'ed
Joined
Sep 14, 2011
Messages
71
Location
Orlando, FL
Had my 8V SE suspension tuned week and picked it up tonight. I am right around 100kg so assumed 105kg with gear. Previously I had Double.D's settings which was a great improvement on stock but this is much better again. The issue with those settings for me was that the rebound from compression was very slow (push down on the rear or front and release and it rose very slowly). The suspension front and rear was compressing on the first bump and then not rebounding fast so was staying compressed through subsequent bumps. The front was a little soft. I run 36psi front and 42 psi rear on the Pirelli Scorpion Sync (stock SE pressures).

Front forks: I expected to be getting stiffer springs but he said they tested at 1 kg/mm stiffness and were fine for me (I could have changed to 5% stiffer springs but was not worth it). In terms of tuning, the components of the standard fork were good quality except he replaced the compression valve stack and the rebound shims. The new compression valve is on the left and the stock one on the right. Essentially the orifices and the profile of the stock valve do not restrict oil flow past the shims enough and it is restricted a lot more now - I guess that stiffens it up. He used Bel-Ray High Performance 5W fork oil.



Rear Shock: The rear spring tested at 9.5kg/mm and he replaced it with a 11.7kg/mm spring. The internal components were fine except he changed the shim sets.

Settings: He gave me 4 setting profiles: Base, Softy, Sporty and Track Day. Preload is at 7 rings. Sag front and rear is 30mm for the first three profiles and 25-28mm for the Track Day profile.

I asked if they related to the stock setup and he said they did not because of the different valve/shims, rear spring and oil so probably not worth listing.

I had about 40km home on the Base setting, definitely a great improvement in handling, I tried to hit every pothole and it handled them a lot better and it corners very, very well keeping a great line.
 

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typhoon

Just got it firing!
Joined
Aug 10, 2012
Messages
5
Hi, I'm a new guy here. Just found this forum. I have a 2007 Griso and I have lowered the rear suspension about an inch by adjusting the spring. Is there anyway I can also lower the front about an inch? I am mainly a city/urban rider and just cruise a bit. I do not push the bike hard at all. I have only 2,000 miles on the bike from new.
Thanks
 

draidt

High Miler
GT Contributor
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Sep 22, 2009
Messages
977
Location
Hernando, FL
typhoon said:
Hi, I'm a new guy here. Just found this forum. I have a 2007 Griso and I have lowered the rear suspension about an inch by adjusting the spring. Is there anyway I can also lower the front about an inch? I am mainly a city/urban rider and just cruise a bit. I do not push the bike hard at all. I have only 2,000 miles on the bike from new.
Thanks


Lower the fork tubes in the triple tree
 

typhoon

Just got it firing!
Joined
Aug 10, 2012
Messages
5
Hey, thanks! I have been looking at the fork for 4 years and never figured that out! Maybe now I can sit on the bike with my feet flat on the ground.
 

matson

Tuned and Synch'ed
Joined
Sep 1, 2012
Messages
28
Location
Tweed Coast
After a bit of fiddling with the Griso's suspension settings, this is what I'm currently running, which works well for me.
I ride solo each week day on a combination of reasonably well paved highway and some pretty choppy secondary roads - mid corner ripples, bumps,debris,potholes etc. On weekends I ride 2 up touring mostly on a variety of secondary roads, some great, others shocking. These settings let me corner reasonably smoothly while allowing the passenger some degree of comfort ie not bucking her off.

Front:
height: 3 stripes above top plate (without orange cup).
sag: 37 mm (spring tension, pre-load 5.0 ring)
compression: 1.5 turn
rebound: 2.25 turn

Rear:
sag: 33 mm
compression: 3.0 turn
rebound: 30 clicks

my weight is 78 kg (172 lb), 2 up 140kg
Solo weekdays, 2 up weekends.
Not so firm but more forgiving.
 

figaro

Tuned and Synch'ed
Joined
Oct 14, 2012
Messages
81
Location
Chertsey
Had a quick play with the rear end and found a good improvement straight away. I bumped up the preload a bit (cos I'm a fat kid) and backed off the rebound about half a turn, and now it feels just as firm but far less harsh without a kick up the ass over bumps. I'm tempted just to stop there, but I'll have a play with the front end at some point to see if there are any further improvements to be had. Normally I'm tinkering with the suspension on my bikes all the time, but I seem to have hit a sweet spot straight away with the Griso. :cheer:
 

Birch

Tuned and Synch'ed
Joined
Jul 26, 2013
Messages
52
Location
Chicago
I'd love to hear some settings on "Fat Kid" bikes.

I'm at 230lbs. No real complaints about the stock settings, but I'm always looking to improve! :D
 

figaro

Tuned and Synch'ed
Joined
Oct 14, 2012
Messages
81
Location
Chertsey
I guess I'm the same sort of weight as you Birch, but I still had to soften up the Griso to get it to do what I wanted. Heavier folks need less rebound damping, so I backed my rear rebound damping off quite a lot, and softened up the compression damping a couple of clicks I think. Made the bike wallow a tiny bit more than standard but it was much nicer over ruts and potholes. At the front I just backed off the rebound and preload slightly.
 
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