spring rates and sag?

14junkie · May 31st, 2012, 07:59 PM

Hey guys just wondering if anyone can tell me what the rate of the stock front springs are.
Also what is the factory recommending as far as sag settings go?

Thanks
Pete

doctorj · May 31st, 2012, 08:04 PM

Stock spring 9.17kg (9.0kg)

Rear shock has a top out spring so no static sag, rider sag for track about 22mm > 26mm up to 30mm street.

Front shock - track/street - 25mm > 30mm static sag, rider sag 40 > 45

maverickma · June 1st, 2012, 11:05 AM

If there is no recommended sag in the owners manual, Ohlins recommends 1/3rd of total wheel travel front and rear which will allow the suspension to work throughout its whole range. Total wheel travel front and rear will be specified in your manual for sure.

Guys, I've researched the hell out of suspension setups.

Doctor...I'll tell ya right now...those are real stiff numbers for the street.

14junkie · June 1st, 2012, 07:37 PM

Thanks for the info.

Pete

doctorj · June 1st, 2012, 09:11 PM

Quote:

Originally Posted by maverickma

If there is no recommended sag in the owners manual, Ohlins recommends 1/3rd of total wheel travel front and rear which will allow the suspension to work throughout its whole range. Total wheel travel front and rear will be specified in your manual for sure.

Guys, I've researched the hell out of suspension setups.

Doctor...I'll tell ya right now...those are real stiff numbers for the street.

I guess it all depends on how you ride and what you expect from the bike, doesn't it.

Assuming your 1/3 rule;

Rear: (120mm/3) = 40mm SAG
Front: (130mm/3) = 43mm SAG

Rear: I recommended 30 ( the reason is the TTX36 has a top out spring so take away 10mm)
Front: I recommended 40 > 45

Here is a video that may help understand better.

setting suspension sag - YouTube

maverickma · June 5th, 2012, 04:18 PM

Well, depends where you ride too, not just how. For example, I go with less sag for track days and since my Daytona has a progressive (not linear) spring in the rear, that also changes the target sag compared to a linear spring.

Dave Moss has some great videos on track day suspension setup which also provide a nice understanding of how everything (sag, compression, rebound) work together. He also teaches you how to read tire wear on track days. The two real good ones are "Intro to Sportbike Suspension" and "Twiddling Knobs". You watch those, no need to have an "expert" from the local shop set up your bike.

doctorj · June 5th, 2012, 11:31 PM

Quote:

Originally Posted by maverickma

Well, depends where you ride too, not just how. For example, I go with less sag for track days and since my Daytona has a progressive (not linear) spring in the rear, that also changes the target sag compared to a linear spring.

Dave Moss has some great videos on track day suspension setup which also provide a nice understanding of how everything (sag, compression, rebound) work together. He also teaches you how to read tire wear on track days. The two real good ones are "Intro to Sportbike Suspension" and "Twiddling Knobs". You watch those, no need to have an "expert" from the local shop set up your bike.

Yep, right on the money!

maverickma · June 6th, 2012, 01:56 PM

Track day on Monday. Yayyy!

gilesr6 · July 15th, 2012, 05:02 PM

Quote:

Originally Posted by doctorj

Stock spring 9.17kg (9.0kg)

Rear shock has a top out spring so no static sag, rider sag for track about 22mm > 26mm up to 30mm street.

Front shock - track/street - 25mm > 30mm static sag, rider sag 40 > 45

Does the Base Model Sachs have a top out spring?

lardawge · July 15th, 2012, 05:48 PM

Thanks doctorj, I need to get lighter springs for sure. Rider sag all the way out 25f 28r.

gman74 · July 16th, 2012, 05:16 PM

Quote:

Originally Posted by maverickma

Dave Moss has some great videos on track day suspension setup

MAV,
Thank you, thank you. I can't get enough watching these short vids. I'd like to kick the cameraman in the junk though, he sucks! Some of these fools getting his attention don't understand what they are gaining. I wish Dave would show up at NCCAR when I'm there.

xpercad · August 21st, 2012, 06:02 PM

Can someone please explain why you need to take away 10mm because the TTX36 has a top out spring ???

I have seen somewhere that when you take the measurement with the rear suspension extended (rear wheel in the air) and you manually force the wheel all the way down, you are already cancelling the top out spring.

In the following manual (page 10):

http://www.oehlins.ch/data/122884090..._TTX36MCRT.pdf

There is no mention of a top out spring to be considered.

Thanks in advance for your feedback.

May 31st, 2012, 07:59 PM	#1
14junkie Junior Member Joined: May 2012 From: sylvania,ga and blairsville, ga Posts: 25 Thanks: 0	spring rates and sag? Hey guys just wondering if anyone can tell me what the rate of the stock front springs are. Also what is the factory recommending as far as sag settings go? Thanks Pete

June 1st, 2012, 11:05 AM	#3
maverickma Junior Member Joined: May 2012 From: Fogelsville, PA Posts: 13 Thanks: 0	If there is no recommended sag in the owners manual, Ohlins recommends 1/3rd of total wheel travel front and rear which will allow the suspension to work throughout its whole range. Total wheel travel front and rear will be specified in your manual for sure. Guys, I've researched the hell out of suspension setups. Doctor...I'll tell ya right now...those are real stiff numbers for the street. Last edited by maverickma; June 1st, 2012 at 11:12 AM.

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May 31st, 2012, 08:04 PM	#2
doctorj Senior Member Joined: May 2012 From: ptown, Oregon Posts: 137 Thanks: 2 I Ride: Panigale 1199S ABS	Stock spring 9.17kg (9.0kg) Rear shock has a top out spring so no static sag, rider sag for track about 22mm > 26mm up to 30mm street. Front shock - track/street - 25mm > 30mm static sag, rider sag 40 > 45

June 1st, 2012, 07:37 PM	#4
14junkie Junior Member Joined: May 2012 From: sylvania,ga and blairsville, ga Posts: 25 Thanks: 0	Thanks for the info. Pete

June 5th, 2012, 04:18 PM	#6
maverickma Junior Member Joined: May 2012 From: Fogelsville, PA Posts: 13 Thanks: 0	Well, depends where you ride too, not just how. For example, I go with less sag for track days and since my Daytona has a progressive (not linear) spring in the rear, that also changes the target sag compared to a linear spring. Dave Moss has some great videos on track day suspension setup which also provide a nice understanding of how everything (sag, compression, rebound) work together. He also teaches you how to read tire wear on track days. The two real good ones are "Intro to Sportbike Suspension" and "Twiddling Knobs". You watch those, no need to have an "expert" from the local shop set up your bike.

June 6th, 2012, 01:56 PM	#8
maverickma Junior Member Joined: May 2012 From: Fogelsville, PA Posts: 13 Thanks: 0	Track day on Monday. Yayyy!

July 15th, 2012, 05:48 PM	#10
lardawge Senior Member Joined: Jun 2012 From: Los Angeles Posts: 141 Thanks: 16	Thanks doctorj, I need to get lighter springs for sure. Rider sag all the way out 25f 28r.

August 21st, 2012, 06:02 PM	#12
xpercad Member Joined: May 2012 From: MEXICO Posts: 55 Thanks: 9	Can someone please explain why you need to take away 10mm because the TTX36 has a top out spring ??? I have seen somewhere that when you take the measurement with the rear suspension extended (rear wheel in the air) and you manually force the wheel all the way down, you are already cancelling the top out spring. In the following manual (page 10): http://www.oehlins.ch/data/122884090..._TTX36MCRT.pdf There is no mention of a top out spring to be considered. Thanks in advance for your feedback.