suspension question - what and why

[Luckypants]

Originally Posted by 21QUEST

Anyhoos back to the point(re Alpinstars) currently been discussed, could well be the front is shooting up too fast...no?

Was my first though to, since that was the problem with the VFR forks. Too little rebound damping made the bike run wide mid-corner as they recovered from braking and powering out of the bend tended to tighten the line again.

New oil in standard SV forks might help here?

I am in total agreement with getting sag set correctly on all bikes....

[yorkie_chris]

Oil thickness affects rebound, there isn't much you can do to give the stock ones decent amounts of compression damping without turning them solid over bumps.

What springs have you ASH?

I've read somewhere here in site that fork oil can vary in viscosity even if they all state for example 10W. Is this true? Or maybe the difference isn't so big to really matter?

Anyway weighting 65kg, with stock springs and emulators, i'm thinking to put 10W. As I understand it would affect only rebound. So is 10W good enough for rough road riding?

[yorkie_chris]

Yes it's true.

No, with emulators you have some effect on compression damping too, so the oil is pretty important. Ask the people who make your emulators what oil.

[flymo]

I went with 20W (was tricky to get hold of as I remember) oil on my race bike as recommended on the RaceTech suspension calculator. It feels totally rock hard at standstill compared to a stock SV but perfect when under hard load on a race track.

[flymo]

anybody got access to one of these http://www.racetech.com/page.aspx?id=37&menuid=96

This would give the information we really need to setup properly.

[yorkie_chris]

Originally Posted by flymo

anybody got access to one of these http://www.racetech.com/page.aspx?id=37&menuid=96

This would give the information we really need to setup properly.

Very very cool technology. I want one!

Nice. I want!!! I want!!!

[flymo]

Please visit http://www.justgiving.com/flymos_racetech_bits

to raise money for my new RaceTech tools

Originally Posted by flymo

I went with 20W (was tricky to get hold of as I remember) oil on my race bike as recommended on the RaceTech suspension calculator. It feels totally rock hard at standstill compared to a stock SV but perfect when under hard load on a race track.

I used 20W too.

Domas: I think Racetech recommend 20W, but check with them first. If you search through the archives for emulators by a user called BlueSV650S (i think) then he did a lot of playing around with emulators and weights of oil as he couldn't get them to work how everyone else was raving. I think in the end he used 20wt or a mix of 15wt and 20wt, but if you search, you'll find the whole story.