KTM Owners Forum banner

1 - 20 of 40 Posts

·
Registered
Joined
·
345 Posts
Discussion Starter #1
I just measured my static sag and its 55mm but everywhere I look it says it should be around 25mm, what does this mean then and how do I adjust it??? Cheers Jamie
 

·
Registered
Joined
·
1,623 Posts
You just need to keep adding preload to your rear spring till you get to the correct measurement. 55mm seems a lot are you measuring it right ?
 

·
Registered
Joined
·
345 Posts
Discussion Starter #3
Yeah I'm measuring it right but I can't help but think that's drastically wrong, will adjusting the preload get it back to within tolerance or will I need a new shock???
 

·
Registered
Joined
·
345 Posts
Discussion Starter #7
I don't no if I can go off the manual as it doesn't have standard suspension, it has all been done by Eastwood racing suspension :confused:
 

·
Registered
Joined
·
61 Posts
1.Put the bike on a stand rear wheel off ground) take measurement from a point on the swingarm , spindle etc to a fixed point on the mudgaurd/side panel etc
2.Take bike off stand sit in normal postion kitted up prefferably,get a freind to take same measurement from same points on bike
3.Subtract measurement #2 from #1 This gives your race sag measurement
4.Adjust collar on shock either way unitll you get your desired race sag 110mm???
5.Now measure from same points on bike(not on stand) with no rider
6.Subtract measurement #5 from #1 and this is your Static sag if this measurement is way out from 25-35mm ish you need a firmer/softer rate spring
Hope this helps
 

·
Registered
Joined
·
293 Posts
Pinched from TT to help you but pictures haven't come through so use this link to view them on the TT thread

Set Your Sag - ThumperTalk

Set Your Sag
Race sag is the distance the suspension sags under the combined weight of the bike and rider from its fully extended (topped out, no load) position. If your race sag is correct, your suspension is in the middle of its range, where it can handle the widest range of riding conditions without topping or bottoming out. For most riders, a race sag of 90-100 mm translates to the correct preload for dynamic conditions.

Static sag is the distance the suspension sags under the bikes weight alone, without a rider, from its fully extended position. Once you get your race sag correct, the static sag will tell you whether or not you have the correct spring for your riding weight. So always check static sag after setting your race sag, because the preload adjustment affects both.

STEP 1 => Put your bike on a stand, and measure the vertical distance from the rear axle to a spot on the rear fender. Record this value as M0…
Click image for larger version Name: PIC-1.jpg Views: 6906 Size: 28.7 KB ID: 204

STEP 2 => Take your bike off the stand, put on your riding gear, take a standing position, and measure again. Record this value as M1…
Click image for larger version Name: PIC-2.jpg Views: 5823 Size: 28.1 KB ID: 205

STEP 3 => Subtract M1 from M0… this is your race sag. If it’s between 90 and 100mm, skip to Step 5. If not, put your bike on a stand, lubricate the threads on the body of the shock, and proceed to Step 4.

STEP 4 => If your race sag in Step 3 was significantly less than 90 mm, decrease the preload by moving the rings up the shock body (ccw). If it’s significantly more than 100 mm, increase preload by moving rings down shock body (cw)… Repeat Steps 2 through 4 until race sag is between 90 and 100mm, then continue with Step 5.
Click image for larger version Name: PIC-3.jpg Views: 7058 Size: 23.1 KB ID: 206

STEP 5 => With your race sag now correct, and your bike off the stand, measure again, but this time with the bike under its own weight. Record this value as M2…
Click image for larger version Name: PIC-1.jpg Views: 6906 Size: 28.7 KB ID: 204

STEP 6 => Subtract M2 from M0… this is your static sag. If it’s between 25 and 35mm, your preload and spring rate are correct. Take your bike out for a test ride, then come back to this forum, and do “Adjust Your Dampening.” If your static sag is not between 25 and 35mm, proceed to Step 7…

STEP 7 => If your static sag is less than 25 mm with the correct race sag, your spring is probably too soft for your riding weight. What happened is this: to get your race sag correct, you set the preload higher than it would have been with the correct (stiffer) spring. So the bike sags less than the recommended value under its own weight. If your static sag is more than 35mm with the correct race sag, your spring is probably too stiff for your riding weight. What happened is this: to get your race sag correct, you set the preload lower than it would have been with the correct (softer) spring. So the bike sags more than the recommended value under its own weight. In either case, go to Race Tech Suspension, and checkout the recommended spring rates for your bike and riding weight. Buy the spring and install it, then recheck your race and static sag, and adjust as necessary. When you’re done, get in touch -- we’ll go for a ride…
 

·
Registered
Joined
·
1,089 Posts
Everybody is talking about static sag, and race sag for the rear shock.
What about the front forks?? Surely you do the same static/race sag measurements and adjustments for the forks?

Peter
 

·
Registered
Joined
·
136 Posts
Everybody is talking about static sag, and race sag for the rear shock.
What about the front forks?? Surely you do the same static/race sag measurements and adjustments for the forks?

Peter
put odd springs in the forks and it will improve handling no end, and you wont have a problem with ur shag
 

·
Registered
Joined
·
1,089 Posts
Twat.

Demeanour, av you robbed my springs?

Anyway, no probs with a shag ere. Just me forks are like wood!!!!! Let's see wot tomorow brings.
 

·
Registered
Joined
·
887 Posts
Twat.

Demeanour, av you robbed my springs?


Anyway, no probs with a shag ere. Just me forks are like wood!!!!! Let's see wot tomorow brings.
Seriously tho Peter, are you not happy with your forks, I thought you had just had them revalved and set up?
 

·
Registered
Joined
·
1,089 Posts
Dave

Just got forks and rear shock back. Tonight. But out first thing with Tony tomoz. So not really had time to mess around with sag etc. Just bolted em on!! Not ideal, but will go out tomoz, let them loosen up a little, and then spend time in setting sag etc.

Its just the forks seem v ' sticky'. Will see how they are after a day in the saddle.

Peter
 

·
Registered
Joined
·
887 Posts
Dave

Just got forks and rear shock back. Tonight. But out first thing with Tony tomoz. So not really had time to mess around with sag etc. Just bolted em on!! Not ideal, but will go out tomoz, let them loosen up a little, and then spend time in setting sag etc.

Its just the forks seem v ' sticky'. Will see how they are after a day in the saddle.

Peter
Might just need bedding in after being worked on ;) see what they are like tomorrow after a bit of trial and error.....did they not give you any base settings to work from?

Anyway, Have a good day out boys, and let us know how you get on

Regards Dave :D
 
1 - 20 of 40 Posts
Top