Were / are suspension seat posts any good for XC / all mountain (whatever that means) riders?
I ask because these days the name of the game seems to be getting as much shock absorption (as well as rolling resistance) as possible if one wants to be as fast as possible. Since most retro bikes can't take modern long travel forks, I'm wondering whether adding a flex stem, sus seat post and phatt tires to my rigid steel bike could be a good start.
If you're going as fast as possible, you're stood up. If you're stood up, what good is a suspension seat post doing?
It will help with comfort when sat pedalling though, I would imagine. Best bet would be a pair of decent high volume tyres (2.1/2.2 minimum), carbon bars and carbon seatpost to take the sting out of trail buzz. Beyond that, a lot of suspension forks can be spaced down to give reduced travel and a smaller A-C measurement, thus making them suitable for older bikes that can't take more than a 75mm travel fork. If you want suspension though, don't ride a rigid retro-bike, ride a suspended bike! I ride my FS for what it is, and my retro rigid for what it is, and wouldn't want to try to make either into the other.
Finally, I one more stupid question about suspension forks. Travel matters to some extent, clearly, as does rebound damping. But does having 70 mm instead of 100 of travel make much difference? And does it matter if the rebound it like a pogo stick (undamped), if the hits are nonetheless being absorbed by the fork?
With forks, it's the quality of travel rather than quantity - that said, if you have the same fork with an inch of difference in travel, the rougher the track, the more you are likely to notice it. And yes, rebounding like a pogo stick is not good!
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