Suspension Guru's..

[dan90210]

My bike will run wide mid corner at the front end. Why would this happen?

Forks only have preload adjustment. For compression I can change the oil.

Rear shock has preload and comp adjustment.

To achieve the correct sag the front is almost wound right out to minimum and the rear is wound to maximum.

[Smiler]

Hooligan!!

I'm not much help sorry!

Theres a lot of peeps on here would recommend a visit to Steve @ Peak Performance to get your suspenders sorted Dan....

[dan90210]

Thanks. I'll try them if I can't sort it myself.

I've done a bit of reading now. I reckon I have a few things to try out.

You may have noticed the big different in sag setting from front to rear, min on one and max on the other. This is probably because the rear has been raised and has opened the spring from where Yamaha intended. Maybe I need more preload at the back to help stop the bike squatting at the back mid corner, but it's already max'ed...

The reason for the rear raise is the FZR1000 was very lazy as standard, very stable, but lazy, so I have done this tail raise after advice from some FZR racers. The difference being they also use hugely expensive Ohlins shocks that are infinitely adjustable compared to mine...

[layne]

http://www.gostar-racing.com/club/motor ... R%20WEIGHT" onclick="window.open(this.href);return false;

This is quite a good reference.

[jer r1]

how about dropping front end a few mm in the triple clamps, will make it more twitchy at high speed but quicker to turn in

[dan90210]

Thanks chaps.

Can't drop these forks as they have a lip that sits against the lower clamp, instead the rear is raised by 40mm. Still really stable at high speed and turns in well.

Its mid corner and at the exit where I need to tweak.

I stiffened the read damping before the ride out tonight and it feels loads better. I reckon I could do with a stiffer spring to do it properly. Adjustment is really limited.

[TLS-Moose]

Something else that might be worth a look ....... I had a YZF750 shock on my exup - remote reservoir, and adjustable compression & rebound

[dan90210]

Oooo, interesting knowledge there sir!

Are those shocks the same or very similar length?

[TLS-Moose]

I've just had a re-think ....... I had an Exup rear end on my Katana too, and I think that might have been the one that had the fully adjustable YZF shock on it ........ and that was obviously made to fit - but I'm certain the Exup had a fully adjustable remote res shock too

Send Layne a PM and get him to measure his YZF shock ........

[dan90210]

Here you go. For anyone wishing to swap shockers. I found this on the EXUP website use...


Make Model Year Shock Length
(mm) Shock Stroke
(mm)
Suzuki Bandit 600 2000-2004 319 55
Suzuki Bandit 650 2005 319.5 65.5
Suzuki Bandit 1200 1996-2000 306 64
Suzuki Bandit 1200 2001-2005 320 (+6/-0) 61
Suzuki GSXR 600 1992-1993 312 (+12/-0) 67
Suzuki GSXR 600 2001-2003 325.5 (+6/-0) 74
Suzuki GSXR 600 2004-2005 332.5 (+6/-0) 74
Suzuki GSXR 750 1985-1987 290.5 61
Suzuki GSXR 750 1988-1991 312 (+12/-0) 67
Suzuki GSXR 750 1992-1995 312 (+12/-0) 67
Suzuki GSXR 750 1996-1999 356 (+6/-6) 79
Suzuki GSXR 750 2000-2003 325 (+6/-0) 74
Suzuki GSXR 750 2004-2005 332.5 (+6/-0) 74
Suzuki GSXR 1000 2001-2002 329.5 (+5.5/-0.5)
74
Suzuki GSXR 1000 2003-2004 332.5 (+6/-0) 74
Suzuki GSXR 1000 2005 319 70
Suzuki GSXR 1100 1986-1988 315 69
Suzuki GSXR 1100 1989-1992 312 70
Suzuki GSXR 1100 1993-1998 312 70
Suzuki Hayabusa 1999-2006 330 72
Kawasaki ZX6R 2003-2004 340 (+12/-0) 72.5
Kawasaki ZX6RR 2003-2004 340 (+12/-0) 72.5
Kawasaki ZX6R 2005 335.5 (+12/-0) 64.5
Kawasaki ZX6RR 2005-2006 330 (+12/=0) 63.5
Kawasaki ZX7R 1996-2001 350 (+12/-0) 75
Kawasaki ZX9R 1994-1997 348 79
Kawasaki ZX9R 1998-1999 330 (+12/-0) 69
Kawasaki ZX9R 2000-2001 338 67
Kawasaki ZX9R 2002-2003 338.5 67.5
Kawasaki ZX10 1988-1989 314.5 67
Kawasaki ZX10R 2004-2005 338 (+7/-5) 69
Kawasaki ZX12R 2000-2005 338 (+7/-5) 67
H*nda CBR 600 F 1987-1990 292 50
H*nda CBR 600 RR 2003-2006 313 (+0/-6) 59.5
H*nda VFR 800 FI 1998-2001 325 58
H*nda VFR 800 FI 2002-2005 317.5 53.5
H*nda CBR 900 RR 1992-1995 319 (+12/-0) 54
H*nda CBR 900 RR 1996-1997 305 (+12/-0) 60
H*nda CBR 900 RR 1998-1999 303 (+12/-0) 57
H*nda CBR 900 RR 2000-2001 286 (+4/-2) 57
H*nda CBR 900 RR 2002-2003 288 (+2/-4) 57
H*nda CBR 929 2000-2001 286 (+4/-2) 57
H*nda CBR 954 2002-2003 288 (+2/-4) 57
H*nda RC51 2000-2005 326 (+10/-2) 63
H*nda CBR 1000 RR 2004-2006 314 (+6/-0) 58
H*nda VTR 1000 F 1997-2005 346 60
H*nda VTR 1000 SP1 2000-2001 326 (+10/-2) 63
H*nda VTR 1000 SP2 2002-2005 326 (+10/-2) 63
H*nda CBR 1100 XX 1997-2005 319 52
Yamaha YZF 600 1994-1999 360 (+12/-0) 70
Yamaha YZF R6 1999-2002 305 (+4/-2) 62
Yamaha YZF R6 2003-2004 295 (+5.5/-0.5) 62.5
Yamaha YZF R6 2005 300 (+0/-6) 62.5
Yamaha FZR 750 1987-1988 300.5 54
Yamaha FZR 750R 0W01 1989-1991 360 76
Yamaha FZR 1000 1987-1988 300.5 54
Yamaha FZR 1000 1989-1995 340 70
Yamaha YZF 1000 1996-2000 340 (+12/-0) 69
Yamaha YZF R1 1998-2001 300 (+11/-1) 65
Yamaha YZF R1 2002-2006 300 (+5.5/-0.5) 64.5

[goatpants]

Send Layne a PM and get him to measure his YZF shock ........

Can't remember the last time I measured my shock

[TLS-Moose]

Har Har Goatie - but Laynes just that kind of guy

Dan - how adjustable is the Thunderace shock? then again, an OW01 shock would help with the ride height too ......

[dan90210]

Good question, I'll find out. I do know they'll all fit without bother though.

[dan90210]

I have now altered the tyre pressures slightly so I'll see how that feels later if it doesn't pee down.

To be honest this rear shock is pretty much max'd out where adjustment is concerned. Raising the damping has helped loads in the corners but now it is bordering on rough over bumps. Any more damping and the bike is gonna start hopping on the bumps. I definitely need a stiffer spring and less damping.

The only answer is to start saving for some bling, an Ohlins or similar shock that bolts right on and is the correct length. OR. Put up with it as it is and put the money towards an R1.

[badgerKDD]

Before you go all bling and chuck ohlins on, check out British shock companies Hagon and Nitron, both offer competitive quality shocks and re builds, give them a ring and have a chat, they can probably rebuild and refresh your shock and set it up for your weight and riding ability. Oh and remember be honest about your riding, that way they will set it up correctly for your ability.