Gen 4: 30 mm Ohlins Kit Fork Sag - Kawasaki ZX-10R.net
 
LinkBack Thread Tools Display Modes
post #1 of 8 Old 03-29-2013, 08:42 PM Thread Starter
Champion Rider
 
brilliantspeed's Avatar
 
Join Date: Jul 2012
Location: St. Louis, MO.
Posts: 330
Posting Frequency
 
Gen 4: 30 mm Ohlins Kit Fork Sag

Trying to set free and race sag. What are good numbers for racing purposes?
brilliantspeed is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 03-31-2013, 11:08 AM
WSB Rider
 
kman0066's Avatar
 
Join Date: Oct 2011
Location: Nashville, TN
Posts: 581
Posting Frequency
 
30mm front, 25mm rear is where I start on an unknown track. Adjust up/down if zip ties on the forks are too high or too low.

I don't know my free sag.

------------
WERA Expert #43
2012 WERA National Challenge Series Open Superstock Novice Champion
http://maps.wera.com/racers/racerpro...30532136163864

COMET RACING LEATHERS

2011 ZX-10R Race bike (Vortex, Silkolene, Leatt, Yoshimura, BRIDGESTONE)
2013 ZX-6R 636 Race bike
2008 Ducati Hypermotard 1100s
kman0066 is offline  
post #3 of 8 Old 03-31-2013, 07:01 PM Thread Starter
Champion Rider
 
brilliantspeed's Avatar
 
Join Date: Jul 2012
Location: St. Louis, MO.
Posts: 330
Posting Frequency
 
Quote:
Originally Posted by kman0066 View Post
30mm front, 25mm rear is where I start on an unknown track. Adjust up/down if zip ties on the forks are too high or too low.

I don't know my free sag.
Thanks. This is what I was shooting for but I'm finding that I have to almost max out on the preload to get to a 30 mm rider sag. I've got a 10.5 N/mm spring and know that's right for my weight. Doesn't sound right that I would have to almost max out the preload to get to a 30 mm rider sag and hence my question. I'm having my tech. pull it all apart and reexamine the forks. Maybe I got the wrong springs
brilliantspeed is offline  
Sponsored Links
Advertisement
 
post #4 of 8 Old 04-03-2013, 08:13 AM
Street Rider
 
Join Date: May 2004
Location: Jarrettsville, Md
Posts: 95
Posting Frequency
 
I suspect the tech will not find anything wrong. I have 25mm Ohlins cartridges on an R1 and have a similar issue. I've done some searching on google and found others with the same situation. I have .95 fork spring and have 30mm free sag with 7 turns of preload and rider sag of 44mm for my weight of 190 lbs. I wounder if it has to do with a top-out spring in the cartridge.
zx7marsh is offline  
post #5 of 8 Old 04-03-2013, 08:34 AM
WSB Rider
 
tacp_daddy's Avatar
 
Join Date: Dec 2011
Location: Olympia, WA
Posts: 926
Posting Frequency
  
Quote:
Originally Posted by zx7marsh View Post
I wounder if it has to do with a top-out spring in the cartridge.
Could be.

Also, SAG isn't nearly as important on BPF's as previous types. Be worried about response/feel/feedback being correct and not so much about the SAG numbers.

*I'm not saying 5mm of sag is good, but if you're looking for 30-35 and you're at mid 20's, or mid 30's on max or min preload, I wouldn't bother with a new spring to get it exact when running a BPF (so long as your suspension is working well and providing good feedback).


1990 CR 125 - blow'd up
2005 SV1000s - sold
2012 ZX-10R - sold
1987 YZF600 Track-only death machine

Last edited by tacp_daddy; 04-03-2013 at 08:37 AM.
tacp_daddy is offline  
post #6 of 8 Old 04-10-2013, 07:24 AM Thread Starter
Champion Rider
 
brilliantspeed's Avatar
 
Join Date: Jul 2012
Location: St. Louis, MO.
Posts: 330
Posting Frequency
 
I had a pretty good weekend at Road Atlanta last weekend. First time tracking this bike. I had the sag at about 11 turns in. Rebound and compression were set at the recommended 12 turns in, I believe. These settings seemed to work out just fine. After two full days of riding Advanced pace, front tire wear was excellent and even, and there was reasonably good response and feedback. I may fine tune as I take it to different tracks, but you are right. Once you get rider sag, it's best to go out and ride it and see how it feels.
Attached Thumbnails
Click image for larger version

Name:	photo-2.jpg
Views:	295
Size:	202.4 KB
ID:	189745  
brilliantspeed is offline  
post #7 of 8 Old 04-24-2013, 11:43 PM
Track Day Rider
 
Cloud 9's Avatar
 
Join Date: Aug 2011
Location: Gold Coast Australia
Posts: 232
Posting Frequency
Images: 1
 
Topout spring has sweet FA to do with sag, the topout spring i purerly for a cussioned stopper when the front lifts. having correct spring weights for you and your bikes weight is important for the suspension to work 100%
free sag is the bikes ability to hold IT'S own weight and that the first step if it can't hold it's own weight it isn't going to be able to hold your weight as well.
free sags should be around 5-15 mm from and 5-10 rear
with rider sags at 30F and 25 R.
44mm sag front is way too much would sugest the springs are shot or too soft for your weight a 1Kg spring would probly be a better spring for your weight.
I'dd expect to see 44mm on a harley! not an R1.
I'm 85Kg in full gear and run a 1Kg in both my 2012 road bike and my 07 tracker.have around 3-4 turns of preload to get the 30mm total sag.
too much sag means your going to be compensating with the compression and rebound to try control what the spring should be doing.
a spring change is probably the cheapest suspension mod to do for the most benifort.

Last edited by Cloud 9; 04-24-2013 at 11:48 PM.
Cloud 9 is offline  
post #8 of 8 Old 04-24-2013, 11:53 PM
Track Day Rider
 
Cloud 9's Avatar
 
Join Date: Aug 2011
Location: Gold Coast Australia
Posts: 232
Posting Frequency
Images: 1
 
even with BPF the sag is just as important,
too much sag is way too much weight transfer for and aft on braking and acceleration.
a good tech will set you straight.
Cloud 9 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki ZX-10R.net forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Gen 4: Ohlins 30mm kit Fork Height brilliantspeed The ZX-10R 8 03-20-2013 05:43 PM
WTB: Gen 3 - Ohlins Fork Cartridge Kit ZiXeR Parts, Gear and Accessories 2 02-01-2013 12:41 AM
Wanted: Ohlins fork or cartridge kit, 06-07 maybe 08-10 jdgun_13 Wanted: Buy or Trade 2 11-22-2012 12:10 PM
gen4: ohlins fork catridge kit Icey_Cold Suspension and Tire Tech 4 06-27-2012 04:43 PM
04/05 Ohlins 20mm Fork Kit New in Box ZX10BURNER Parts, Gear and Accessories 0 11-03-2007 02:29 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome