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 Stelvio shock on a GRiSO riding impressions

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Oz1200Guzzi
pauldaytona
EricS
GHTE
waterbottle
BBB888
Nobleswood
voulga77
Brent S
wyno
Pete Roper
guzziownr
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Pete Roper
GRiSO Capo
GRiSO Capo
Pete Roper

Posts : 8111
Join date : 2013-05-29
Age : 64

Stelvio shock on a GRiSO riding impressions - Page 4 Empty
PostSubject: Re: Stelvio shock on a GRiSO riding impressions   Stelvio shock on a GRiSO riding impressions - Page 4 Icon_minitime1Sun Jun 20, 2021 3:27 pm

All of the anchor points in all of the bikes are the same. There is more than enough scope for movement in the shaft with its two trunnions at either end of the shaft.

The reason you don't run the bike in gear without load is the firing intervals will turn the entire driveline into a clattering mess!
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Doc.
Don Abbondio
Don Abbondio
Doc.

Posts : 53
Join date : 2017-04-22
Age : 59

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PostSubject: Re: Stelvio shock on a GRiSO riding impressions   Stelvio shock on a GRiSO riding impressions - Page 4 Icon_minitime1Mon Jun 21, 2021 3:08 am

Ah, I see, got it!
Thanks Pete.

I fitted a BMW S1000R Shock to my Stelvio back in Apr 2017.
I had it on the Shelf for another project, and when I first removed my Stelvio Shock, I thought they looked pretty close, size-wise.
It was almost a straight swap, but being slightly longer, the Body of the lower Fork fouled on the main Link just before it reached full extension.

I machined up a replacement Link, with a bit more clearance in the Critical place.
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It rode a little higher at the back which I didn't want, as I have a GRiSO Front Wheel fitted.
Raising the rear made the steering just a little too unstable for my liking, so I made another front Linkage, slightly longer, to drop it back down to the standard level.
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Pete Roper
GRiSO Capo
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Pete Roper

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Age : 64

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PostSubject: Re: Stelvio shock on a GRiSO riding impressions   Stelvio shock on a GRiSO riding impressions - Page 4 Icon_minitime1Mon Jun 21, 2021 3:16 am

Ironically I got a call from Clancy this morning. His bike has started making weird noises from the back after he fitted a refurbished Stelvio shock.😂

It's not I don't think related to the shock but we'll know when we autopsy it.
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Macgyver
Squinternotto
Squinternotto
Macgyver

Posts : 6
Join date : 2021-06-24

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PostSubject: Re: Stelvio shock on a GRiSO riding impressions   Stelvio shock on a GRiSO riding impressions - Page 4 Icon_minitime1Thu Jun 24, 2021 2:00 pm

Hiyas,
So if I go down this road for my 06 1100, do I need a later 2012 onwards Stelvio shock?

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Clancy
Nibbio
Nibbio
Clancy

Posts : 500
Join date : 2016-02-09

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PostSubject: Re: Stelvio shock on a GRiSO riding impressions   Stelvio shock on a GRiSO riding impressions - Page 4 Icon_minitime1Thu Jun 24, 2021 3:34 pm

Pete Roper wrote:
Ironically I got a call from Clancy this morning. His bike has started making weird noises from the back after he fitted a refurbished Stelvio shock.😂

It's not I don't think related to the shock but we'll know when we autopsy it.

Yes, my bike is parked until we can get it to Moto Moda for investigation.
I don't believe that the higher shock is directly the issue as others are using the Stelvio shock fine, but coming only a week after I installed the shock it does seem to suggest that I've inadvertently caused the issue during (or by) installation.

What's happening is, when under load either accelerating or engine braking there are no sounds or problems. The bike runs fine.
But when I pull in the clutch and hold it there is a clanking & clattering from the carc area.
I first noticed this rolling to a stop a bit longer than normal as I had to wipe fog off my visor with my right hand.
Once home, with a mechanic neighbor assisting, I found that when sitting at idle with the clutch pulled and then slowly releasing the clutch, at the point of traction there is a solid clunk in the carc area like something is taking up a big slack.

Anyways, am not fear mongering, just informing since Pete mentioned it and I figured somebody would ask anyway.
We'll let you know what gets found when it's found.
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Macgyver
Squinternotto
Squinternotto
Macgyver

Posts : 6
Join date : 2021-06-24

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PostSubject: Re: Stelvio shock on a GRiSO riding impressions   Stelvio shock on a GRiSO riding impressions - Page 4 Icon_minitime1Thu Jun 24, 2021 4:04 pm

Your issue will not be related to shock height. It would need to be seriously high to effect the shaft angle.
I've built many BMW cafe Racers and Ural/Dnepr bobbers where we change the shock mount location and shock height. It has never been an issue.
My GRiSO 06 1100 has always clunked into gear when releasing the clutch, even taking off from the lights, no noise changing to second etc.
Last Guzzi also did this and my Suzuki Cavalcade has clonked for 12 years going clutch in to drive off from lights. They are pretty solid rear ends.
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lcjohnny
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lcjohnny

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PostSubject: Re: Stelvio shock on a GRiSO riding impressions   Stelvio shock on a GRiSO riding impressions - Page 4 Icon_minitime1Mon Jul 19, 2021 1:06 pm

Just fitted an early model Stelvio shock with a 110Nm/mm spring.

For me (riding solo) it is not a night and day change.
Mostly on larger bumps the bike remains controllable & I think it 'notices' less general bumpiness..

The best bit is that when needing to brake hard (front & back brake) in a bend the bike is much more stable and steerable.

Yes i know i should have been riding at a more "measured" pace No but I was having fun Laughing
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Macgyver
Squinternotto
Squinternotto
Macgyver

Posts : 6
Join date : 2021-06-24

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PostSubject: Re: Stelvio shock on a GRiSO riding impressions   Stelvio shock on a GRiSO riding impressions - Page 4 Icon_minitime1Mon Jul 19, 2021 1:37 pm

lcjohnny wrote:
Just fitted an early model Stelvio shock with a 110Nm/mm spring.

For me (riding solo) it is not a night and day change.
Mostly on larger bumps the bike remains controllable & I think it 'notices' less general bumpiness..

The best bit is that when needing to brake hard (front & back brake) in a bend the bike is much more stable and steerable.

Yes i know i should have been riding at a more "measured" pace No but I was having fun Laughing

So not worth doing?
May as well buy a good aftermarket shock?
Someone did say to use 2012 onwards Stelvio shock.
Maybe the earlier versions not as good?
Were your shock pivots dry?

What are your front fork settings?
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lcjohnny
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lcjohnny

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PostSubject: Re: Stelvio shock on a GRiSO riding impressions   Stelvio shock on a GRiSO riding impressions - Page 4 Icon_minitime1Mon Jul 19, 2021 4:20 pm

Macgyver wrote:


So not worth doing?
May as well buy a good aftermarket shock?
Someone did say to use 2012 onwards Stelvio shock.
Maybe the earlier versions not as good?
Were your shock pivots dry?

What are your front fork settings?

Wow what a lorra questions.

My stelvio shock cost me £50 the 110 Nm/mm spring cost me £85 so I am £135 down
But my purpose was (1) to give my wife an easier time on pillion and (2) stop the bike going bat-shit when it hits a big hole.
Today my wife was not on the seat - so i cant check (1).
But i didn't find any bat-shit holes in the road - maybe coz i missed them and maybe coz the spring and shock length are already helping.

I suspect that the damping of the early Stelvio shock is no better than GRiSO standard - so if i still have the bike next year a new proper shock is on the cards.

However either the stronger spring or the change in steering angle has alread helped the stability in corners

Also in UK weather I know that link bearings corrode very quickly  pale  affraid  pale and my shock came with  a full set of linkages with the bearings and sleeves 2/3 good and 1/3 usable. => so not a total loss Smile

The shock pivots are not dry: they were new 4k miles ago and greased and have now been regreased at 32k
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