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rear shock faulty?

theruck

theruck

Joined May 2009
472 Posts | 0+
Slovakia
Hello ppl,
i have a 03 mille with the default SACHS rear shock
i just noticed that when braking and turning into corner the back is realy "swiming"
it is really soft. when i touched the rear shock absorber i burned my fingers.

1. are your shocks also hot? if so then why?
2. if it is a malfunction can it be repaired? nitrogen refill or what?
3. is it worth it or shall i get another one?
4. are all the shock absorbers compatible between version 99-02 03 04-09 ?
5. anyone got one for sale?
 
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hello mate hope you don't mind me tagging along but I've recently noticed the stepping out on the down shift but just put it down to a weak slipper clutch. I've never had it before and it only started last weekend. Hopefully someone on hear will help you (and me:thumbup)
 
Same year as mine,I think the shocks will get hot anyway due to the oil inside being worked but they also absorb a tremendous amount of heat from the exhaust running alongside.

The ideal is an aftermarket shock ( of whatever flavour you fancy) with a remote reservoir and wrap the pipe with heat resist lagging.

It's a particular problem with V twins due to the routing of the rear pipe. Of course marginal quality shocks in the first place don't help as they get old and weak very quickly without the heat from the pipe.

Maxton,Maxton Maxton, You know it makes sense :devious
 
okay the rear exhaust header really heats up the back shock something bad, lagging the rear exhaust header can help a lot.

I am not sure about rebuilds, you might need to speak to someone like Maxton or Kais

again the shocks from 98-03 should be compatiable but that would need confirmation from those with more knowledge than me.

If the back is moving around that much I would think
1. Tyre Pressures
2. Too fast
3. Seized linkages
4. Shock

The slipper clutch thing is not a true slipper clutch but a vacuum assisted back torque limiter.
It doesnt function as a modern slipper clutch does , you mustnt blip the throttle but just roll off or keep it constant when down changing.
Also the one valve which in real essence is a reed valve can fail , its easy to check. if you can blow through it from both directions it fooked.
 
ok guys. some answers but nobody answered a question :) are your sachs shocks hot after 3 minutes ride?
i measured the tyre pressure and it was ok before the ride so there must be something with the rear shock i think. i did not feel it 3 days ago when i went out for a ride but today it was from the begining and getting worse. anybody tried those WILBERS shocks? they seem to be not so expensive and look better than the sachs
 
Sorry about not answering the 3 min bit,but I would have thought NOT,never thought of checking to be honest.

Wilbers? Hmm. They are American aren't they? Not sure whereabouts you are but I would think availability of servicing and information may count for more than brand.

As soon as I can get myself a job I'll be looking to ditch the sachs and replace it with the latest remote res Maxton offering, I'll also get the forks gutted and have them re-built with their internals.

They are only about 3/4 hr down the road from me so it's a no brainer,plus Richard is on the end of the phone to offer setting advice etc.

Just take a stroll round most English club racing / Irish Road racing paddocks and have a look and see what the majority of racers fit.

I'll give you a clue...................they aren't gold and they don't have yellow springs.

These are built for the individual bike,tyre and style of rider to order,none of this 'part no xxxxx off the shelf and learn to live with it' crap.

Best thing I ever did with the front of the SV1000,now the Mille needs to be brought up to the same level.
 
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Wilbers is German, their shocks are good

They already explained why the shock is hot, there have been reports of sachs overheating, but usualy on the track

Rebuild is never a bad idea, it might help. You should have the shock and fork rebuild every 2-3 year

It will be cheaper to rebuild it, but another shock, suit for you weight is also not a bad idea.

Shocks are diferent 98-00 and 01-03. But you can use a older/newer shock with the same model linkage, so if you want to get a older model shock, you also need the linkage and vice versa.

I might have an ohlins soon, can let you know in a few days.
 
thanks for replies. so lets give it to another level. i am going to replace it. i need to resolve it really cheap or will have to wait till spring 2010.

what i found was a new Wilbers for 400€ Type 640 Road Ø 46 mm - http://www.wilbers.de/en/wilbers_federbein.php

ohlins will be out of my pocket so only if i am lucky and somebody is going to sell one for around 400€

could not find the maxton you are reffering to

found various sachs on ebay from 100€ to 200€ but can be a risk to buy one. anybody selling a good piece? :)

do you know any other not so expensive alternatives? or shall i send it somwhere for reassembly? http://cgi.ebay.co.uk/APRILIA-RSV-M...arts?hash=item27a55ea14a&_trksid=p3286.c0.m14

can somebody try his own sachs after a rie if it is burning or not?
 
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Thinking about it logically a shock simply cannot get that hot by the action of the shock alone !, especially not under normal road conditions and only after a 3 min ride.

Think about the location of that rear exhaust header and the radiated heat.

Yes your shock maybe tired and yes the heat from the header is not helping, my Ohlins gets too hot to touch but its build quality means the damping doesnt go off as much.

You need to contact Maxton (phone them, they are a really decent bunch) they will tell you over the phone but I reckon on around £400, you could check out Hagon as well (They will do a shock for around £350)
 
i am from Slovakia so probably not the right option for me. anyway i thought that there is a nitrogenum in the rear shock tank which is cooling the oil so if the N is out then it gets worse with the temperature. but if you say your ohlins gets boiling as well now i am thinking more and more about the linkages. or is there anything else despite rear tyre pressure which can cause the floating feeling from the back wheel?
 
no when it was cold i felt "something is going on" but with the temperature it gets worse
 
Jea than something is wrong with the shock. I have a friend that also complained about his sachs overheating and going soft, but only on the track, he changed it for an ohlins unit and the problem was solved.

But there are other rider that use the stock shock on the same track without problems, so it maybe just needs a rebuild.
 
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theruck said:
ok guys. some answers but nobody answered a question :) are your sachs shocks hot after 3 minutes ride?
i measured the tyre pressure and it was ok before the ride so there must be something with the rear shock i think. i did not feel it 3 days ago when i went out for a ride but today it was from the begining and getting worse. anybody tried those WILBERS shocks? they seem to be not so expensive and look better than the sachs
Click to expand...
i have a Wilbers racing shock bud and it's an amazing bit of kit! As for servicing it or spare parts, theres a company in holland who deal with them and also a british co but can't remember the name at the moment????? It's transformed my bike!!!!!
 
It's the Sportline model with blue spring set for my weight! Got it through Dolenc on the forum by pure luck and Very cheap!
 
Ahoj theruck, ako sa mas ?.

The shock shouldn't be getting so hot after that short space of time. Looking at what andirsv has said the Wilber's shock might be a good choice for you, and as they have place's Holland and the UK part's wouldn't be a problem. I think I would go for a new one rather than a second hand one, at least you know you have a good few year's life in it.
 
hey thanks ;)
i will ask at bike boneyard. there should be one rsv factory crashed on its front. so my options now are
used SACHS around 130E
new Wilbers 400E
used Ohlins from internet around 300E
used Ohlins from boneyard ???E
 
Where did you find the one for 400eur?

Im looking at the wilbers site and the model you want is 550 and the race model is 900.
 

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