Will this suspension linkage fit?

Message

Olig7475 · #16 Post by **Olig7475** » Fri Jun 12, 2009 9:29 am

Will do, starting to think the gamble hasn't payed off!!!!

Oli

back_marker · #17 Post by **back_marker** » Fri Jun 12, 2009 12:10 pm

mangocrazy wrote:On a completely different tangent, has anybody ever re-sprung a 2001-2003 Ohlins or Sachs to work with the Falco linkages? Spring rate on the 2001-2004 Ohlins is 540 lb/ins and is 800 lbs/in on the Falco Sachs.

Just interested, is all...

I like the way you're thinking on this...

What I'm thinking is what actually is it that doesn't work from the 01-03 type Sachs on standard linkages? As the length is adjustable on the yellow spring, if it just the spring that's the problem then it should just be a simple matter of changing it and hey presto yellow spring works with Falco linkages.

Or has someone already thought of that and theres more to it, ie internals.

#18 Post by **mangocrazy** » Fri Jun 12, 2009 12:42 pm

The Falco linkages have a significantly higher ratio than the 01-03 RSV ones, requiring a higher spring rate. This also means that for any given wheel movement the shock travel will be less on the Falco shock/linkages than on the RSV shock/linkages. So the 01-03 RSV shock will need to have a longer travel than the Falco Sachs. As a result there won't be any shock travel issues using an 01-03 RSV shock on Falco linkages.

The only issue I can see is internal valving will be stiffer on the Falco shock than on the 01-03 RSV shock. But given the amount of adjustment available on both the 01-03 Sachs or Ohlins RSV shock, I'm fairly sure this shouldn't be a problem in practise.

So - who's going to be the first to try it?

D-Rider · #19 Post by **D-Rider** » Fri Jun 12, 2009 12:44 pm

That may work but remember that the stroke lengths are different (different triangles give different leverage ratios) and it may need re-valving too.

#20 Post by **mangocrazy** » Fri Jun 12, 2009 12:50 pm

I think we came to basically the same conclusion Andy...

Just that I used four times the amount of words you did. (Different linkage ratios, obviously...)

D-Rider · #21 Post by **D-Rider** » Fri Jun 12, 2009 12:53 pm

LOL - never saw yours .... you must have posted while I was typing.
Good that we reached the same conclusion.

Moose · #22 Post by **Moose** » Sat Jun 13, 2009 8:44 am

If anyone is interested in the
http://cgi.ebay.co.uk/Aprilia-RSV1000-R ... 7C294%3A50 shock from spares unlimited and thinks, as I do the postage is high

I can get it delivered for you for a lot less (i.e Free) let me know. (check free collection in person first

)

On the subject of springs I have a white spring (spring only) and blue anodised adjusters if anyone wants them. I bought them off e-bay in a box with a load of stuff I actually wanted, the spring doesn't have any markings that I recall.

Cheers

Olig7475 · #23 Post by **Olig7475** » Sat Jun 13, 2009 12:22 pm

Ok so the 2004 linkage arrive today and I've measured it up as per the A1 link:

A - 75mm
B- 84mm
c - 125mm
D - 58mm

Dog bone is 31mm wide
The triangles are 5mm thick cast allie

give or take +/- mm they measure up the same as the 2001-2003 linkages.

Cheers
Oli

#24 Post by **mangocrazy** » Sun Jun 14, 2009 7:51 pm

Hi Oli,

The only significant difference that I can see between the 01-03 linkages/dogbone and the 04 onwards ones is the width of the dogbone. There's 5mm difference (the 04 is narrower) and if you're fitting this to the Falco it will need to be packed out by 5mm to fit to the triangles and the frame. This could cause problems I suspect.

If you can get hold of an 01-03 dogbone you should be sorted, but the triangles/dogbone tend to get sold as an item, not independently.

D-Rider · #25 Post by **D-Rider** » Mon Jun 15, 2009 12:06 am

I've just come across a picture comparing the 01-03 Mille triangle with the 04 onwards triangle:
(The 04 onwards one is on top)

I was looking for a thread to clarify what I remembered hearing about a number of reported cases of this with the 04 onwards parts:

Here is just one of the threads on the subject:
http://www.apriliaforum.com/forums/show ... en+linkage

Given this problem, I would exercise great caution in using the later linkages in a configuration for which they were not designed.

#26 Post by **mangocrazy** » Mon Jun 15, 2009 9:34 am

That really is a very scary photograph. Having seen that I'd say 'don't go there' with the 04 linkages. When the two sets of linkages are shown side by side the true extent of the differences can be seen.