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I adjusted the Progressive shock yesterday, set the sag with me on board at 30% of travel (assuming it gives the same 75mm of rear wheel travel as the stock one). This resulted in lifting up the back end of the bike, ride height at back of right frame rail was increased by 25 mm. It can be seen in today's photo, bike leans further over on stand.
The suspension was more comfortable over big bumps, guess they were being met by suspension travel in the region where the spring rate was more linear, rather than in the rising rate part towards the end of its travel.
The bike tipped in to corners more easily, but the front end felt twitchy. Giving the handlebars a shake resulted in an oscillation that took several cycles to damp out. Didn't like that at all, got bad 70's memories of riding Kawasaki 500 triples and early Z1s. It would mean less stability on dirt roads too.
So back at the shed, I reduced the preload by 2 turns of the ring nut. Static sag is up to 36%, and ride height is down to 20mm more than stock. The Progressive must be longer than stock; should have measured it before fitting. I'll see how it feels in the next test ride.
The suspension was more comfortable over big bumps, guess they were being met by suspension travel in the region where the spring rate was more linear, rather than in the rising rate part towards the end of its travel.
The bike tipped in to corners more easily, but the front end felt twitchy. Giving the handlebars a shake resulted in an oscillation that took several cycles to damp out. Didn't like that at all, got bad 70's memories of riding Kawasaki 500 triples and early Z1s. It would mean less stability on dirt roads too.
So back at the shed, I reduced the preload by 2 turns of the ring nut. Static sag is up to 36%, and ride height is down to 20mm more than stock. The Progressive must be longer than stock; should have measured it before fitting. I'll see how it feels in the next test ride.