#16
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#17
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Although they offer an "indexed" lever, this is really a friction system. For reliable indexing, there needs to be a mechanism to ensure a constant chain gap (gap between sprockets and jockey pulley), and this derailleur has no such mechanism. So even though the shifter has "soft" detents, the user will likely have to use the old technique of moving the lever a little to far so the chain grabs the next sprocket, and then back again to center the derailleur. It also appears that the the outer cage plate has a rigid extension behind the jockey pulley - this probably contacts the chain and helps to push it to the next sprocket, much like a front derailleur cage plate.
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#18
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I think he's been reading audiophile brochures:
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#19
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Ya, qualia talk is difficult, probably should be left at something like "feels nice to use if you like this type of thing", just like a lot of audiophile talk could be left at "sounds good if you like tube amps". But curious people want to know more and if the core value of your product is not easily measurable than you are stuck with that kind of language.
I think this is a big part of why products tend to follow certain tracks in development. Qualities that are easy to describe / prove / experience are prioritized over more subtle ones. This makes sense, it is easy to prove the new model is lighter or bigger but whether is handles / sounds / feels better will always be up for debate.
__________________
please don't take anything I say personally, I am an idiot. |
#20
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#21
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I was under the impression that the swing arc of the links (much like with the old Allvit's "knee action" swing) better follows the slightly concave and conical profile of typical cassettes or freewheels (I believe Jan uses a 7s Dura-Ace Uniglide freewheel with this new derailer on his personal race bike). I found "soft" indexing detents to be a constant shifting nightmare compared to pure friction (as evidenced by certain Suntour Accu-7 levers that had an "F7" mode between the index and friction selections). As such, I would not have expected to see any "soft index" lever sold by RH. Perhaps though with no return spring, it might work ok??? ! Spiral-shaped "push plates" formed into the outer cage plate only enhance shifting toward larger cogs, they won't help shifting in the other direction. So this derailer does have to maintain a tight and consistent chain gap (through geometry and adjustability) just like any other modern derailer throwing around today's flexible bushingless chains. Realizing responsive shifting with 11s cog spacing is a tall order, the derailer's design has to be good. I wonder if this derailer's mounting style might(?) help with today's huge cassettes pushing the cage too close to the ground. Might this mounting/orientation style possibly work better than any of the "three pulley" designs that have appeared (on paper and in metal)? Remembering that Suntour offered a front-mounted (rear swing), indexing mtb/hybrid derailer in the early 90's, and that production bikes appeared with the system. Last edited by dddd; 12-12-2022 at 11:47 AM. |
#22
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David |
#23
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Modernity has a strong preference for the measurable, this has had ripple effects in all of our pursuits.
__________________
please don't take anything I say personally, I am an idiot. |
#24
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I think it's way cool, and would consider one on my next bike. But then, I like tube amps too.
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#25
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I love that the next post to this on the RH website is probably about the aero potential of mudguards. It's such an odd, but pleasing, juxtaposition.
Much as I suspect RH/JH are often onto something, this isn't one of those times. It looks nicely made, tbf, but it does strike me as a solution looking for a problem. |
#26
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As far as archaic, low volume production rear gorillas go, I'm much more excited for rivendell's OM-1. At least I won't have to build a custom bike around it. Unless..
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#27
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__________________
http://less-than-epic.blogspot.com/ |
#28
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Why say "thing" and not "thingie"?
(this is a suggestion masquerading as a question) |
#29
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What frameset would you envision for a conversion? |
#30
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Black Mountain Cycles, Soma, maybe a lugged steel Trek. Something that would fit 32-35c.
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