SV650.org - SV650 & Gladius 650 Forum - Front Springs

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SV650.org - SV650 & Gladius 650 Forum (http://forums.sv650.org/index.php)

- SV Talk, Tuning & Tweaking (http://forums.sv650.org/forumdisplay.php?f=111)

- - Front Springs - YET again. (http://forums.sv650.org/showthread.php?t=128483)

Bluefish

17-04-09 07:26 PM

Re: Front Springs - YET again.

Quote:

Originally Posted by Rich G (Post 1869837)

Reactive Suspension (York) fitted Racetech valve emulators, traxxion springs (0.9), damper rods and 15W fork oil to my SV650S on Tuesday. Gareth also serviced the forks.

I had previously tried progressive fork springs - and while better than stock they weren't great. Still had too much fork dive, juddery on rough or bumpy roads and didn't want to turn into sharp corners.

Well I can say that the new mod is fantastic! Bike handles like a CBR600RR (I've ridden one on a track day). Honest, I'm well pleased (and a little stunned).

High speed damping is good (bumpy roads used to rattle my eyes out), braking is much better (little fork dive) and it flicks through corners like you wouldn't believe.
Not cheap - daren't tell unless the wife finds out - but it makes the bike what it should have been from the factory.

http://www.suzukiownersclub.co.uk/fo...ys/smiley1.gif http://www.suzukiownersclub.co.uk/fo...ys/smiley1.gif http://www.suzukiownersclub.co.uk/fo...ys/smiley1.gif http://www.suzukiownersclub.co.uk/fo...ys/smiley1.gif http://www.suzukiownersclub.co.uk/fo...ys/smiley1.gif

how much would this cost, ballpark figure.

Rich G

18-04-09 10:34 AM

Re: Front Springs - YET again.

Domas,
The emulators are factory set and they're fine. 15W is good for the road; use a good brand because my Hypropro oil looked poor after only 12 months (one leg black the other milky?). Original Suzuki springs are 0.67 so may be too soft. I'm circa 12.5 stone plus leathers.

Bluefishman - look to budget for £350 fitted, with a fork service from a professional.

Dave20046

18-04-09 12:09 PM

Re: Front Springs - YET again.

Quote:

Originally Posted by injury_ian (Post 1871054)

.... I have heard 20w being compared to 'forks-o-iron'

I get that on my 15w on some roads. Is there a problem with it being too hard for you would softer be more forgiving or would it just feel like it was? sheffield is pothole city and I've hit one on a bend and it was very much a brown trouser moment, hitting choppy road surfaces on heavy (for a 33bhp :roll:) acceleration is a bit uncomfortable too.

Domas

19-04-09 07:57 AM

Re: Front Springs - YET again.

Quote:

Originally Posted by Rich G (Post 1872339)

I want to try stock because they are 0.712, and race-tech recommends 0.728 for road use, because my SV is naked so theoretically less weight on front, and because springs can be easily replaced later on, even without removing forks.

I will try 10W oil first, as I read somewhere that stock springs are likely not to be able to handle 15W on rebound and thus giving too much rebound damping.

First thing I need to do is find a way to get the emulators to this god forgotten place.

Dr T	19-04-09 08:24 AM

Re: Front Springs - YET again.

Can anyone tell me why Suzuki fit softer springs to the S?

Rich G

19-04-09 09:34 AM

Re: Front Springs - YET again.

Domas,

Try e-mailing Gareth at Reactive Suspension (in York) I'm sure he will advise you.

Rich

xXBADGERXx

19-04-09 09:42 AM

Re: Front Springs - YET again.

Quote:

Originally Posted by Dr T (Post 1873395)

Can anyone tell me why Suzuki fit softer springs to the S?

The SV is a "Budget" bike to all intents and purposes , Suzuki pinched quite a few pennies in certain areas to keep the costs down , the S has clip-ons and you are over the front a lot more than on the Naked , so I suppose they fitted softer springs to make the general ride a bit nicer on the wrists ..... as we all know this is not true in certain road conditions . They don`t cater bikes for conditions "country by country" so I suppose they went for a "Happy" European medium ......... this is just guesswork by the way and is not based on anything factual :)

Domas

19-04-09 08:13 PM

Re: Front Springs - YET again.

Quote:

Originally Posted by xXBADGERXx (Post 1873453)

I think they went for 55kg japanese girl on super smooth roads :)

Quote:

Originally Posted by Rich G (Post 1873444)

Domas,

Try e-mailing Gareth at Reactive Suspension (in York) I'm sure he will advise you.

Rich

Thanks Rich G I will try to do that.

Quote:

Originally Posted by Dr T (Post 1873395)

Can anyone tell me why Suzuki fit softer springs to the S?

Omg it's true, just checked racetech site. S models have 0.670, and N models 0.712 springs. Definatelly gonna try stocks then.

xXBADGERXx

19-04-09 09:49 PM

Re: Front Springs - YET again.

Quote:

Originally Posted by Domas (Post 1873939)

I think they went for 55kg japanese girl

Yeah I could go for one of them right now :smt040

Domas

12-05-09 09:06 AM

Re: Front Springs - YET again.

Gareth at Reactive Suspension was most helpful, and I have received emulators today. I will install them after i figured out the settings first.

What added more confusion to the matter, is that i received 2 sets of valve preload springs, yellow springs pre-installed 64 lb/in, and blue springs 40 lb/in.

Race-tech brochure indicates that preload controls firmness when braking, and spring rate controls firmness over small bumps.

So, anyone bothered exchanging valve preload springs? How does it affect the feel of forks if I use softer spring with more preload in comparison with harder spring with less preload?

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