Front suspension sag

[łorsoł]

Good day. 

 

Can any body tell me what is a static sag of front suspension, with ORIGINAL springs, oil, etc. Factory static sag at front? 

 

Thanks in advance. 

[Terez]

Pretty sure its 30mm

 

I am 210 naked...I get 70mm of rider sag sitting on the bike in street clothes

[łorsoł]

Thanks Terez.

 

Maybe somebody will have 120seconds to go to garage and confirm please... 

 

We are trying here to upgrade stock front suspension with bigger valves, adding +30mm at the same time. But for now fully extended fork has 260mm and then, when I lower the bike to check a static sag with only bike's weight - I have 200mm. I should be around 25-30mm I think, not 60mm down only with the weight of the bike. I still use stock springs. 

Edited March 30, 2022 by łorsoł

[jdub53]

According to my notes when checking all of my T7's stock suspension measurements before any adjustments were made, front static sag was 52mm with full fuel tank.

[łorsoł]

52mm.... Much more then I thought. But mine 60mm at the moment is not that surprising anymore. Still, far from a common 10%-30% rule. 

 

Thanks a million for that, I completely forgot to take this measurement before we started working with upgrade. 

[Tomaszch]

Think I did the same as you want to do now. I went with 6.3 N/mm springs and Racetch 20mm valving. The only tricky part was with needle setting. Apart from that nothing serious. I am now having static sag of 41mm. 

Check and measure the set in tripple clamps. I know it's a stupid thing, but often neglected

[jdub53]

Should have added that the dynamic sag was 67 mm (~ 215 lbs in riding gear). So on my T7 static sag at 52 mm was 25%, while dynamic was 32%. Seemed strange but checked it a couple of times, always the same result.

[łorsoł]

Jdub53, thank you for all info, very helpful. 

 

Tomaszch, upgrade we are working on is a bit tricky...  my friend removed original inserts and used the other one - KYB 43 OC. You can see on the photo (friend's photo), original insert is from T7, next to it is the one I have installed at the moment. So valving is 25mm instead of 20mm, also this main 'rod' or whatever proper English name it has, is thicker - 12,5mm instead od 10mm. As you see, a bit brave project, but friend of mine is determined, still learning and searching and we'll see how it goes hehehe... 

[Tomaszch]

Right, OEM valving is 20mm. I went with 35mm. That was over a year ago and forgot what the dimensions were. I just changed the complete piston stack. It does make the forks more managable in the dirt. Compression damping gains in regulation, but I have to say that after some time, I wouldn't do it again. I would just simply buy Tractive or Ohlins open or closed cardridge kit. Good luck tough, it sure does look like a challenge

[Terez]

Just went out and checked closely using calipers

 

Bike stock condition, no extra guards or gear attached, 3/4 tank gas

45mm of static sag

[łorsoł]

Thank you very much Terez, appreciate that. 

[Paul]

On 3/30/2022 at 6:25 AM, łorsoł said:

Good day. 

 

Can any body tell me what is a static sag of front suspension, with ORIGINAL springs, oil, etc. Factory static sag at front? 

 

Thanks in advance. 

 

Both mine stock have been 35mm with 3/4 tank

Edited April 17, 2022 by Paul