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VorsprungSuspension VorsprungSuspension's article
May 5, 2020 at 17:48
May 5, 2020
Inside the new Fox 38 - Tuesday Tune 32
Running either LSC or HSC full open on the Gen1 version of the Grip2 damper led to VERY low compression damping, as the LS bleed was so large that it could effectively allow oil through with almost no restriction when fully open. HSC fully open on those dampers allows float in the HSC shims, so again, pretty well zero damping from the base valve. I don't think that anyone (except maybe at Rampage or something) used the absolute upper reaches of the full range on the Grip2 damper (whereas a few did on the RC2) - to get the curves shown there, you have to have both LSC and HSC pretty well fully closed, which is a very harsh ride in terms of the LSC being really hugely overkill. That then begs the question why the Gen 1 damper was able to be set so firm to begin with. Running the HSC fully closed with LSC fully open is actually a pretty comfortable ride on that just because there is so little damping even at high speeds. Not the best for stability and control in my opinion, but you can certainly ride a fork with no compression damping - numerous forks over the years have not even had a compression damper at all. Not optimal, but certainly not unrideable.
VorsprungSuspension JesseMelamed's article
May 5, 2020 at 11:01
May 5, 2020
VorsprungSuspension mikekazimer's article
Apr 17, 2020 at 14:28
Apr 17, 2020
Video: Does Your Suspension Really Work Better Without a Chain?
@optimumnotmaximum: it might help marginally with that - I don't see it being something that's actually significant or noticeable beyond placebo though.
VorsprungSuspension mikekazimer's article
Apr 16, 2020 at 23:35
Apr 16, 2020
Video: Does Your Suspension Really Work Better Without a Chain?
The biggest gains are psychological for sure. Not braking, lack of noise, not even having the drag of the chain to provide resistance against spinning the cranks to a different position - all of those play a part I think.
VorsprungSuspension mikekazimer's article
Apr 16, 2020 at 23:27
Apr 16, 2020
Video: Does Your Suspension Really Work Better Without a Chain?
@R-M-R: actionable yes, but probably not in the ways you're expecting or anticipating. It just starts asking new questions rather than validating answers to old ones. For example - if you're seeing about as much vibration horizontally through the bars as you are vertically, do you keep trying to isolate vertically or do you look at what's never really been investigated regarding reduction of vibration in the horizontal dimension? So for us, the actions so far are investigating things like that and trying to work out where the biggest gains are to be made. Not just a matter of "turn the Vibration Harshness adjuster 3 clicks counterclockwise" unfortunately :)
VorsprungSuspension mikekazimer's article
Apr 16, 2020 at 17:27
Apr 16, 2020
Video: Does Your Suspension Really Work Better Without a Chain?
@R-M-R: seems to be a function of frequency almost as much as amplitude, you basically need a PSD to show you where the damage is being done. There are large studies on the human response to vibration, far more comprehensive than what we've done, but the ones I've read have also only been 1dof vibration, not the 2.5dof you get with a bike.
VorsprungSuspension mikekazimer's article
Apr 16, 2020 at 17:13
Apr 16, 2020
Video: Does Your Suspension Really Work Better Without a Chain?
@R-M-R: for sure, it certainly isn't the biggest factor affecting suspension performance, the impulses just aren't that large even when the forces are high but the effect seems large enough to be noticed by quite a number of riders, which may be a noise/structural vibration concern as much as an actual force directly acting on the rider (although the same can be said of a lot of vibration through the bike that the rider perceives as harshness, and some of those are vibrations we HAVE directly measured - https://www.instagram.com/p/Bylp_j5nfTV/). It's just another element to consider in the relative chaos of mountain bike suspension performance.
VorsprungSuspension mikekazimer's article
Apr 16, 2020 at 14:20
Apr 16, 2020
Video: Does Your Suspension Really Work Better Without a Chain?
Yes. In fact I recommend replacing your rear shock with a steel bar for optimum chain efficiency :)
VorsprungSuspension mikekazimer's article
Apr 16, 2020 at 14:12
Apr 16, 2020
Video: Does Your Suspension Really Work Better Without a Chain?
It works better because of how much better it works.
VorsprungSuspension mikekazimer's article
Apr 16, 2020 at 14:11
Apr 16, 2020
Video: Does Your Suspension Really Work Better Without a Chain?
Not my bike in the video, but that's what anyone does if they want an effectively steeper seat tube angle, particularly on steep climbs. Every one of my bikes ever has been set up like that as well, because STAs are still generallly too slack for tall riders.
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