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Again the PRIMARY function of the damper is to dissipate the residual energy in the system by compelling the spring to do WORK in the pumping of the fluid through the restrictions in the shock body.
Well...?The thread hasn’t been nuked and a fight hasn’t broken out yet. That’s a bit of a shock isn’t it ?
Can you re word that LR ?I don’t know Rich is.
Rich was the guy that was checking the sag on my Ducati last weekend. Just as I described earlier, he held and measured the bike when I sat on it and picked it up. Ultimately made no adjustments (which was close enough for me). He was impressed how little stiction in the suspension but thought that heavier springs might improve the ride and that the shock had too much high speed compression (jolt -not adjustable). His statements were square with yours but I still don't quite grasp it all. Rich was a club racer for many years and owned a company that sold motorcycle springs.
<snip> ride quality is not affected by pre load.
Anyone who has ever overloaded a pickup truck and had their front end pointing towards the moon will remember the front end all over the road.
This, for some reason is the hardest concept for me to fully grasp. I have always thought that adding preload will make the ride stiffer......becaus e you are "pre loading" the spring. I know the spring rate is still the same and it still takes the same weight/force to compress the spring a specific amount with/without preload. Maybe just hard to let go of after years of hearing about adding preload to stiffen up the spring...... Kind of reminds me of trying to understand trigonometry many,, many years ago. I just need to keep thinking about it until something clicks. Thanks for posting all this.
At the instant that the damper comes off it’s top stop, it becomes irrelevant what force it took to preload it.It’s just that the first bit of weight you applied when you STARTED to climb aboard, is not enough to start compression.(That’s where the seed is sown that it’s “stiffer”).If 25 mm of pre load (as in our example), has applied 40 kg, then any load less than 40 kg will not cause further compression.But exceeding that 40 kg with the remaining load, will then take the spring to it’s stabilised length.It may help to think of preload in terms of mass (kg), rather than distance (mm).If your spring is bearing 200 kg it will compress to 150 mm.If you pre load it 40 kg, the first 40 kg that YOU supply when getting on won’t move the shock, but the remaining 160 kg will.In each case, the spring when loaded with 200 kg and stabilised, will be 150 mm length.So the progressive PERFORMANCE of the spring will still be evident in use, but how much it was PRELOADED is irrelevant.
Hagon have come back to tell me I need 18Kg (/mm?) springs as opposed the 17Kg on the bike now