Thanks Terry. Great vid. I got my YZ125’s suspension totally rebuilt by you guys last year as well as my CBR600RR ten years ago. I still remember coming to one of the races at Eastern Creek helping you and Grant one Sunday. Great learning experience
At the 1.38 mark I should have said that there will be "more" Static sag with the lighter rider. Sorry...my mistake. It gets sorted out later in the video.
Great explanation on the relationship between Spring rate and setting sag. I now understand that just dialling up preload on a soft Spring may not be the answer. Looks like a visit to Shock Treatment for my F800GS.
Great video, very complex approach and good explanation. I'm wondering how far from theoretically perfect sag value You went based on rider's feedback but for sure this bike is now on completly different setting. Great job with video.
Amazing info. I have seen a lot of these and this is a masterclass. Going to watch part 3 now - I ride tarmac Supermoto so I'm looking for some insight there as sag figures will be different again 😊 Thanks 👍
Terry! Been watching your videos in America. Thank you! I have a couple questions: 1 sag is set and you go outside to test, is that the High Speed Compression you are adjusting? If rider likes increase in dampening (clockwise) what do you do to the setting of the sag at the shop? If rider likes decrease in dampening (counter-clockwise) what do you do to the setting of the sag at the shop? Finally, once sag is set where are you going with your high speed dampening? Where are you setting it at since the adjustment has now been compensated on sag.
I am adjusting sag via an Xtrig preload adjuster using an 8mm tbar. We are chasing ideal drive characteristics. This is done as a priority before any damping changes are made. Remember....on dirt bikes it is the sag that is the primary mechanism for swingarm angle adjustment. That's the whole point
Can you please make a video about the front sag (or not) with regards to off-road bikes? The one for road bikes made a lot of sense, but I wish you had a video for off-road bikes as well. Thanks!
Can you talk about Titanium springs? Progressive springs? Viscosity of damper fluids? Any telemetry used to measure swing arm and fork throw with position sensors + G's sensors to measure what the rider feels subjectively to dial a tune? I notice the Honda race bike has a ton of data ports...
Great videos. You say you're adjusting the preload each time with the t bar. Does the Husky have a quick adjustment compared to the YZ450F and the 2 x nuts? Or are you adjusting the compression or rebound?
Guys, thanks for the video, it's very useful! But I wanted to deduce the determination for the word sag. is it possible to call a sag a range? Sag as a manufacturer's recommended suspension compression range? A static sag is from 30mm to 40 but its a range, it is a recommended range and for a rider sag also is a recommended range. So is the sag a range first of all?
They do but if you have additional racking / panniers etc at the rear of the bike, they are prone to influencing the static sag as they are in a position of high leverage. This needs to be considered
Front sag will naturally effect geometry but it does not respond well to static measurements/adjustments due to the level of drag/binding in a telescopic fork. I prefer to set the front by a ride and adjust method (dynamic). Its more relative and doesn't mislead.
10% of 600 is 60 so why did you put the ideal static setting at 38.5mm? That is only 6.4% static sag compared to free sag. But yet you recommend 10-15%? Trying to wrap my head around 30-35% rider sag of 600mm. That would be 180mm rider sag. And you called his rider sag good at 106.5mm that is 18% of the total free sag.
Hi Romanov. Most dirt bikes have appr. 300mm of travel, 10 - 15% is 30 - 45mm......30 - 35% is 90 - 105mm. Any measurement is the garage is not final and ultimately it is what works on the track that counts. We actually had to wind on a bit more preload once we tested to get the best ride quality.
Terry! Been watching your videos in America. Thank you! I have a couple questions: 1 sag is set and you go outside to test, is that the High Speed Compression you are adjusting? If rider likes increase in dampening (clockwise) what do you do to the setting of the sag at the shop? If rider likes decrease in dampening (counter-clockwise) what do you do to the setting of the sag at the shop? Finally, once sag is set where are you going with your high speed dampening? Where are you setting it at since the adjustment has now been compensated on sag.
