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08 Stelvio rear spring

G

Galway46

Just got it firing!
Joined
Jun 7, 2014
Messages
4
Hi all,
Bought the Stelvio a few months ago, just done a fair few miles with the wife, I would like to change the rear spring for an uprated one, can anyone help please, I need the measurement of the spring off the bike, with no weight at all on it. Does anyone have a spring knocking about that they could measure for length and internal width.

Looking at popping over to France in August, so it will be well loaded up, I understand the rear spring is quite soft and to be fair it is the weak link in the bike, other than that I find it superb,,,, Happy Days
 
Thanks very much, I did do a search, but it didn't find this link,,
Thanks
Col
 
The stock rear shock is a mid level sachs, and VERY DURABLE, it is just under sprung and over damped in this application
, any good shock builder can add a nitrogen bolt and rebuild

Quick note when spring shopping if you re-spring the factory rear which can be made to work well, and being in Europe you have many more folks familiar with sachs shocks, use ohlins 1091 series springs, these fit the factory rear shock, fit through the swingarm at all rates up to 1100lbs (which would be for a 500lb rider ha ha ). the 1091 is just a tad short so they would have to add a spacer which is just a ring if memory servers about 6mm tall

Just as a note for the builder, the rebound is ok up to about a 800lb spring as is (the stock is about 610lb), but actually you will want them to reduce the compression stack a bit or even better open a small bleed.,

incidently going up a bit on the fork springs really should be done at the same time,

with a load of about 325-350 lbs a 140-150 N/mm shock spring and 9.3-10N/mm fork springs is good for sharp handling, and still these let you run soft enough compression to take bumpy stuff and not get killed

the Stelvio is really one of the top handlers in its class on the road and very under rated on fire service and gravel roads.
 
Thanks uzidzit,
I really appreciate that, seem to be coming up against a brick wall with it all.
The shock itself, as you say is well sorted, maybe an upgrade or service of the oil would help, it's the spring itself that's soft, a local Guzzi dealer said he could acquire a Hyperpro spring for me, but to no avail, seems they don't produce them anymore, so I will do a search on the Ohlins 1091 series, failing all this I might be tempted to put a small spacer in place and try that, this will give me an idea of the rate etc,,,,
Many thanks and much appreciated,
Col
 
That's great uzidzit.
Col, could you keep us posted concerning your efforts.
I'm in Oz and my usual suspension guy wants to upgrade me to a Wilbers shock and Matris fronts but I'm not going to spend that amount.
 
the spacers are on order, should be here tomorrow ( Thursday), but also got in touch with Motogb, who Sponsor Kawasaki in BSB, Brian from Motogb has a spring in stock, 185mm in length, 57mm ID, 900ibs in spring weight, £49 all in. So I have also ordered the spring.
I am going to try a couple of things over the weekend.
Firstly, drop a 10mm spacer ring either below or above the standard spring, to see how much preload and rebound gain I can get from this, as the spacers are only £8 each, this could be a decent fix for low money !!!!!!
Secondly, I am going to install the new spring, and try the same, same roads etc, I will try the same standard factory settings the same on the 2 experiments, fully loaded, two up etc.
Someone may have tried this route, and will no doubt point out a thread, but I will give it a go, as I am very nosey :wait:
Then I will look at the front end, as uzidzit mentioned, if we don't try, we never succeed :hi:

Happy Days:)
 
the spacer with the stock spring will not help as that does not increase the rate, it may raise the ride height and may coil bind the spacer is really for the replacement so it can have the correct preload set
 
You need to replace the spring, as above post a spacer won't help. I changed the spring which I was told was rated 100 n to a 140 n (Ohlins do it as a straight replacement). Huge improvement for not a lot of money.
 
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