Hi all, new to the site and straight in for help!!!! I have an 1198 which I just use for track days. Only used it a couple of times and all is going well. After the first ride I stiffened up the front end and it was good last time out. I have however been unable to set any free sag on the rear. I have backed the spring preload nuts right off and still no free sag. The sag with me on it is set about right at 30 mm. Thought I would ask advice before I try raising ride height as I don’t want to mess up rake, wheel base etc...
first of all you dont set the free sag, free sag is free sag, no weight the rear of the bike wheel in the air take a measurement! then measure same points bike on its wheels then measure same points bike and rider.. i suggest revisiting what your asking.
confused .com rear ride height, free sag, how do you know what rider and bike sag is if you dont have a free sag to measure from... again revisit what you are trying to do!
I think you will find that you do set free sag. That’s what the Pre load spring adjusters do, set tension in the rear spring so that you have it under high tension (no suspension sag under its own weight )or under low tension ( the weight of the bike alone makes the spring compress). This I think should be approx 8/10 mm sag. I assume from the replies I haven’t explained myself clearly. Thanks anyway for replying . Is there anybody with any knowledge of this out there?
Try reading this http://www.gostar-racing.com/information/motorcycle_suspension_set-up.htm You asked for advice, advice was given, you argued against the advice.
There’s a few. A couple included who have commented. If you have zero static sag-, and haven’t would preload right up, the spring is wrong. As cream says, how are you getting the wheel off the ground so it has zero weight on it? Assume you’re not using a rear stand?
Oh , that was advice was it , thought it was people trying to make me look like a dick.!! This is a waste of my time by the looks of it..... I have set up many a bike , just thought I would see if anyone has had a similar experience which is what I thought this forum was for,... silly me
Morning. People are actually trying to help you, but your attitude is not assisting I am sorry to say. The fundamental question asked so far is how you are lifting the rear wheel off the ground. If this is by a paddock stand on the rear wheel or swing arm, then the measurement of sag will remain the same when lifted or on the ground as the weight of the bike is supported on the rear wheel. If you use an ABBA stand or similar, the weight is borne by the frame leaving the swing arm unsupported hence a different rear sag reading. Alternatively, you can get the rear lifted by a mate as you take the measurement. I recommend that you re-read the above thread and you may just realise that people are trying to help.
I am a Newbie to site not to working on bikes. I haven’t had experience with heigh adjusters. This was my question. Do I need to adjust the height adjuster to get my free sag. I did indeed get a freind to lift the rear of the bike and there was no suspension left to lift....... no free sag. I havent got a bad attitude( well , perhaps I do know) , I am open to, and after advice by experienced people who don’t reply to me like im a 5 year old, telling me to re visit what I’m trying to do. Perhaps time served experienced forum members should know better. So, I shall leave you all to it now as I have looked at most of the links you have shown me before I came on here, which some of you would do well to visit yourselves if you want to give “advice”. I guess this is a little too specialist for you. Thanks for all who did reply with good intentions. Dave Moss has some good videos and tuition for anyone wanting to know more but none discussing my issue!! Adios
Hello, The suspension height adjustment link does not affect sag so I would not expect that it will help with your predicament. I hope you find an answer to your issue and would be grateful if you could let us know the solution, once you have sorted it.
So, if you stand at the side of the bike and look at the rear, when your mate lifts the bike up at the back via the rear subframe to the point where the rear wheel is off the ground, the swing arm stays the same angle in the bike and doesn't move at all from when the shock had the weight of the bike in it? Like its fixed in place?
