The Sachs blue shock

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gazuk
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The Sachs blue shock

#1 Post by gazuk » Tue Mar 06, 2007 10:51 am

It looks like I will be going down the Mille white shock route, but it ain't going to be cheap once you factor in a service cost and possible new spring to match my slightly larger than average frame. :smt003

So I was thinking, What is really wrong with the original shock? D Rider has said recently that it was improved at some point. Why it the mille white spring and yellow spring items better? Would you get similar performance getting the original resprung/serviced?

I have calculated that the white spring jobbie, once bought/serviced and resprung is going to set me back about 200 quid :smt101 .

I've decided that this is the most important mod on my list (now I've done the sidestand), so can't play with new exhauts or shiny bling till I get the shock done.

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#2 Post by Thumper » Tue Mar 06, 2007 11:33 am

The original shock will do the job if you are an average rider you could upgrade the spring on this shock for around £25, if you are on the heavy side.
I would remain patient though and wait for a good used RSV shock to pop up at silly money, you don't have to service it but it makes sense to do it whilst its of the bike. I did mine because I had no idea how many miles the unit had already covered and it looked a little tired.

The total cost of my shock including service and upgraded spring was;

Shock £50.00
Rebuild 75.00 http://www.revsracing.co.uk/revs/ohlinsfork.htm
spring 25.00 http://www.dfaulknersprings.co.uk/

Total 150 .00 Considering the price of new shocks this is good value. :smt002

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#3 Post by gazuk » Tue Mar 06, 2007 11:54 am

Thumper,

Which shock do you have. Are the white and yellow ones much of a muchness?

As for the pricing, I also got my figures from revsracing, and he said around 100 quid to service with new schrader valve, and around 50 quid for a spring. Postage on top.

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#4 Post by danowat » Tue Mar 06, 2007 12:00 pm

Original shock is fine, just needs setting up properly to take into account the lack of damping adjustment.

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Re: The Sachs blue shock

#5 Post by D-Rider » Tue Mar 06, 2007 12:52 pm

gazuk wrote: What is really wrong with the original shock? D Rider has said recently that it was improved at some point. Why it the mille white spring and yellow spring items better? Would you get similar performance getting the original resprung/serviced?
.... mmmm .... don't remember that I said it had been improved .... BUT ... I have heard a rumour that this was the case - I really don't know whether it's true.

My feeling would be to hang on for a while until a decent White or Yellow spring (with linkages) jobbie comes up.
These have remote reservoirs and ride height adjustment - and they DO come up at reasonable prices from time to time.
I even got an Ohlins with just 10 miles on it for £210 (so no need to be serviced before being used). OK, bargains are harder to come by on ebay but they do come along from time to time.
Don't forget to search for things spelled incorrectly :smt002

In the meantime, save your money rather than spend it on tarting up a flawed Blue Spring shock .... or if yours is really knackered you can probably pick up very cheaply one with almost no miles on it - from someone who's already swapped for something better.

:smt003

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#6 Post by gazuk » Tue Mar 06, 2007 12:54 pm

danowat wrote:Original shock is fine, just needs setting up properly to take into account the lack of damping adjustment.
So what is involved in 'setting up properly'. There aint that many things to tweat.

I know the sag is the first thing to do though.

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#7 Post by HowardQ » Tue Mar 06, 2007 12:57 pm

This is my understanding -
The Blue spring Falco shock was revised in 2000 for what has become known as the 2000.5 model, which also had a number of other changes.
The Falco shock does not have a separate reservoir, everything is contained within the shock body. You only have to have a quick look to see the exhaust pipe is right next to the shock body, so it tends to get hot, even when the bike is stood still, get it heated up on a fast bumpy road and the early shock could seriously overheat. The revised shock was evidently much better insulated, but still had no external gas reservoir. I ran my 2001 model with a blue spring for 16k miles, and found it acceptable, not brilliant but have ridden bikes with much worse shocks.
I am 15 stone so had pre-load set pretty high, (also to lift rear a bit to improve turn in, and the damping (rebound only on this shock),set a bit stiffer than standard. Made it a bit hard at the rear but lived with it.
Now have a white spring Mille shock fitted. Bought off ebay for £38 plus delivery. It came in an Ohlins box and looked totally unmarked, so someone had changed it whilst nearly new. It certainly hadn't seen a winter probably never been out in rain, so decided to try as is.
The white spring shock fits with the existing Falco linkages and is also slightly stiffer on the spring than the blue spring. It has a separate gas reservoir, well away from the exhaust. It is also 4 way adjustable, rather than 2 way. Compression & rebound damping, plus preload and ride height.
Only problem fitting is the schrader valve, which sticks out and touches the frame when you try to fit it. The clearance seems to vary on different bikes, some people seem to have fitted it OK with a thinner dust cap, others have just removed the dust cap and got away with it. (Care needed here is the pin sticks out proud so will de-gas if touches frame!!).
In my case I had nothing like enough clearance, so ground down the outside part of the valve with a small Dremel cutter. Kept trying, had three goes before cleared enough off, when sure I then ground off the pin so it was a fraction blow the outer part. Fitted it and works fine.
If you are paying for a rebuild, it is better to fit a recessed valve.
I still have the original Falco side stand, so set the Mille ride height at the minimum, which is slightly higher than the std Falco. I will probably go slightly higher when get round to fitting a new stand. Started off using the std Mille settings, as per manual and just set the Sag.
it is certainly better than it was and rides much better over bumps.

If you go for a later yellow spring unit you will need to get the Mille linkages to go with it, then as above.
Hope this helps, just pot luck I suppose, when you buy second hand. I just went on the appearance, but you could pick one up one in good nick but looking a bit tatty if used in winter. Not a difficult job to swap, so you could try it first. The Sachs shock on the Mille seems to be pretty well made, so worth a try if low mileage.
Hope this helps, good luck with it.
Last edited by HowardQ on Sun Mar 11, 2007 9:55 pm, edited 2 times in total.

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#8 Post by danowat » Tue Mar 06, 2007 1:28 pm

gazuk wrote:
danowat wrote:Original shock is fine, just needs setting up properly to take into account the lack of damping adjustment.
So what is involved in 'setting up properly'. There aint that many things to tweat.

I know the sag is the first thing to do though.
I don't know, I got 100% suspension to set mine up, he is a BSB suspension mech, and an Ohlins dealer, his words were this......

"There is too much said about the (blue spring sachs) Falco shock by people who do not know what they are talking about, the original shock is perfectly good enough for fast road and trackday riding".

Obviously, if the shock (any shock infact) has done a fair few miles, then it will need servicing, but IMO, having had it setup and ridden it round the track I can see no real reason to pay money to replace what is already a perfectly good enough shock.

If you have money to fling around, or you want to change linkages etc, go for it, but for me, and my track/road riding the blue spring shock is more than good enough

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#9 Post by fastasfcuk » Tue Mar 06, 2007 1:30 pm

danowat wrote:
gazuk wrote:
danowat wrote:Original shock is fine, just needs setting up properly to take into account the lack of damping adjustment.
So what is involved in 'setting up properly'. There aint that many things to tweat.

I know the sag is the first thing to do though.
I don't know, I got 100% suspension to set mine up, he is a BSB suspension mech, and an Ohlins dealer, his words were this......

"There is too much said about the (blue spring sachs) Falco shock by people who do not know what they are talking about, the original shock is perfectly good enough for fast road and trackday riding".

Obviously, if the shock (any shock infact) has done a fair few miles, then it will need servicing, but IMO, having had it setup and ridden it round the track I can see no real reason to pay money to replace what is already a perfectly good enough shock.

If you have money to fling around, or you want to change linkages etc, go for it, but for me, and my track/road riding the blue spring shock is more than good enough
that will do me

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#10 Post by HowardQ » Tue Mar 06, 2007 2:00 pm

Would agree that the Blue spring is much better than people tend to label it, but the remote reservoir (away from the heat of the exhaust) and the 4 way adjustment rather than 2 way, have to be classed as a worthwhile improvement.
As said earlier though, I managed with mine for 16k miles, so not that bad!
Last edited by HowardQ on Tue Mar 06, 2007 9:24 pm, edited 1 time in total.
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#11 Post by Thumper » Tue Mar 06, 2007 5:58 pm

I agree the falco shock is better than it's reputation on a smooth road or track it's fine but it has limitations the biggest is it's not height adjustable but you can lower the front end.
I changed the falco shock because I'm fat :smt003 the bloody thing sagged so much with the 784 lb spring it has it was like being on water skies. :smt005
The bike wouldn't steer and ran wide in bends :smt100 lowering the front helped but I lost much needed clearance but worst off all it gave me a pain in the arse because I ride on rubbish roads which are full of holes.
In the end I just prefer to upgrade to the mille Sachs shock with the white spring.
This was a 812 lb spring and this helped as I could now also play with ride height. OK I had to spend a little money to get it working but not a lot and I have now fitted an even heavier spring at 850lbs. :smt003

The difference between the old shock and the new is amazing I can ride 150 miles now without discomfort and it steers rides and sags perfectly, well almost :smt003

I road a falco recently with an Ohlins 46PRC none height adjustable unit, true it looked nice but compared to my 2nd hand Sachs it was crap. :smt020
John at revs is an ok guy time has gone by since he did my shock and he is in business to make money go see him and negotiate :smt003

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#12 Post by gazuk » Tue Mar 06, 2007 6:09 pm

some excellent replies here guys, thanks alot.

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#13 Post by Thumper » Tue Mar 06, 2007 6:12 pm

Just a though don't simply concentrate on aprilia listed shocks I believe their are shocks from other bikes that fit maybe this would but you will have to do some research
http://cgi.ebay.co.uk/OHLINS-REAR-SHOCK ... dZViewItem

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#14 Post by sabestian » Tue Mar 06, 2007 8:53 pm


gazuk
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#15 Post by gazuk » Tue Mar 06, 2007 9:36 pm

Thumper wrote:Just a though don't simply concentrate on aprilia listed shocks I believe their are shocks from other bikes that fit maybe this would but you will have to do some research
http://cgi.ebay.co.uk/OHLINS-REAR-SHOCK ... dZViewItem
Thanks for that, but I don't really have the time or technical know how to tread new ground.

Two kids, two bikes, one wife, one dog and far to much grass and headges to cut means I have to be realistice with what little spare time I have. :smt012

I already have a small pile of bits I got for my DRZ of ebay which don't fit :smt017

Also, I do have an offer of a white spring shock. I was just doing a final check before I got it.

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