My weight is roughly around 160lb and what is static sag? I don't quite understand that part. How do I set the static sag for it?
My front oil I'm using 15w and I'm happy with it just thst the rear is really firm for me lol
I assume you have got the Progressive 416's on the rear? If so there should have been an instruction leaflet in the box, if not I will give you a summary of what to do.
Static sag is the amount the suspension compresses when you sit on it compared to the suspension being fully extended when the bike is on the centre stand. From memory the maximum travel of the rear suspension is 85 mm on the 416's for the GL1500 measured at the shock absorber NOT the travel measured elsewhereon the bike. To accurately set the staticsag you will need to put the bike on the center stand & remove one of the side panniers,.Nowinitially set the suspension pressure in the rear suspension to 30 psi, measure thedistance between the top & bottom mounting boltsof the rear shock and make a note. For the nextstep you are going to need some one to help you. Push the bike off the center stand and sit on the bike with your feet just keeping the bike upright so all of your weight is on the seat & get your assistant to again measure the distance between the shock mounting bolt centres, for a 1/3rd static sag for touring machines you are looking to get a measurement of 28mm LESS than than your previous measurement. Add or remove air pressure accordingly and bounce up and down on the seat to get the shocks to settle properly & keep checking to achive the desired result, then make a note of that pressure. Now refit the pannier. Now that's the hard part, for future use and differing weights with the bike on a LEVEL surface, get your assistant to measure from a fixed point at the rear of the bike to the ground, "I use my tow bar as it's central & allows for easier measurement to the ground" and make a note of it, your static sag is now correctly set. As you add extra weight you will need to add extra air to the suspension to compensate for that extra compression in the suspension. Have your assistant measure from the groundto that suitable point and add air to get that ride height to your previous height.
I cut a small piece of wood I keep on the bike to save measuring. You only need to do this once as once you've done it you keep a note of differing loads & suspension pressures so it's then a case of loading up, set the pressure and ride off. The suspension rebound and shock compression rate is non adjustable as it's the weight of oil within the rear shocks that controls that.
With your weight of 160 lbs I would suggest 30 psi may be a good starting point for the suspension pressure.
is the link to the GL1500 installation leaflet from Progressive for the 416's.
The recomended static sag for most touring bikes is approximately 33%, so even with OEM suspension the process is exactly the same BUT there may be a slight variation in numbers due to differing suspension lengths of travel.
Sports bike tend to have around 25% static sag as a starter for suspension set up. Dependant on differing roads the percentages may vary slightly but they are generally very close to that mentioned.
If you are still a little unsure how to set it up, there are a couple of good Youtube video's by Keith Code. Get on to Youtube &search Keith Code & you will find them.