Progressive fork springs

Started by Janacek, 24 Sep, 2026, 19:20

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Janacek

Does the tighter winding go to the top or the bottom? Or does it make no difference?

limeyrob

On rear shocks its usually at the top. But my instinct would be to put the closer (softer) coils at the bottom on forks because that its less un-sprung weight since the closer coils move first, but if I was right why are all the rear shocks the other way round? Curious

Derek996

Surely the closer coils have more weight in one place than the wider coils so placing them at the top will give less unsprung weight, i.e. at the swinging arm.
1948 BSA ZB32 Competition
2015 Ducati Scrambler Classic

ducati2242

As derek says It has something to do with unsprung weight the least weight at the bottom is better so on that basis tight springs at the top . but it probably makes no difference .
1956 bsa GS DB500
1968 mk1 Rocket 3
2006 ducati 999R .

V500

I doubt there's any real-world difference, but closer springs at the bottom looks far better.