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Thinking about friction vs STI(9 posts)

Thinking about friction vs STIscottfree
Jun 11, 2002 7:29 AM
Has anyone ever tried these?:

http://www.kellybike.com/takeoffs.html

Migh be the best of both worlds.
Rivendell used to push them pretty hard, but...cory
Jun 11, 2002 7:48 AM
They haven't been in the last few catalogs. I've never tried them just because they look so clunky and didn't seem to offer any real advantage over the barcons I already have on my main road bikes. Grant really did seem to like them, though--he ran pictures and descriptions in several catalogs and Readers a few years ago.
The best if both worlds is indexed downtube.unchained
Jun 11, 2002 8:17 AM
high performance, low cost, low weight, minimal clutter, best looking, most comfortable, rare now-a-days, and a certain non-trendy appeal.
Well, I think the best of STI isscottfree
Jun 11, 2002 8:42 AM
the convenience -- you're not grabbing around down between your legs. And the best of friction is smoothness, quietness, simplicity, infinite trimmability. With indexed downtube, you don't get those things, by and large.

Basically, I don't see indexing as any improvement at all over friction, except (possibly) for accuracy. You're not guessing where the chain's gonna land. Then again, if you use friction long enough, you get pretty accurate just from muscle memory and practice.
This 600sis group has just that, and it switches b/t friction128
Jun 11, 2002 12:44 PM
and index with the twist of a d-ring (I use the friction). Pretty neat.
It does get to be a bother reaching down there as I change gears a lot....especially on hills or any onther scenario where I want to keep two hands on the bars and shift.
Nonetheless, looking forward to the sti "upgrade".
SunTour Superbe Pro and GPX do the same. I've said...Djudd
Jun 11, 2002 2:38 PM
my lament for SunTour but I still sigh when I type Superbe or GPX.
Let us not forget Cyclone ...scottfree
Jun 12, 2002 6:03 AM
I have Cyclone Mk II (one notch below Superbe in the Suntour hierarchy) on the Univerga, Superbe Pro on the Miyata, and I have to say I slighly prefer the Cyclone. (Could have something to do with the self-trimming Symnmetric shifters though, another Suntour innovation that is little remembered these days).
This 600sis group has just that, and it switches b/t frictionxcandrew
Jun 12, 2002 1:33 AM
Are they 6 speed? If so, I'm amazed that it still indexes. I had them on my bike until the indexing part broke, and when in friction mode they didn't quite enough friction to hold. I would have to constantly retighten the ring. Mine were from '86 or '87, and they were from the second SIS group designed (first Dura-Ace in '85 or thereabouts) and were known to self-destruct. I replaced them with a set early Campagnolo synchro downtube shifters that are pretty sturdy and also have a friction mode.
This 600sis group has just that, and it switches b/t friction128
Jun 12, 2002 5:25 AM
Well, you've accurately described a part of my riding experience: the auto-shift while in the heart of a hill's incline. Damn near kills me evertime but I can hear it coming and ease off during the unintended shift/failure. (love this retro-crap) So, yeah I think you're spot on there, and yes it is 6 speed and d-ring needs tightening now and again, but the tranny still kicks serious ass and I still have room to grow on this retro-rig before the upgrade becomes entirely necessary.
Sheldon's site addresses this 'auto-shift' describing it as a result of the flex of the frame acting like a one way clutch, shortening the cable, until it acts as an unintended shift: soulution: a drop of lubricant in the lower cable guide: and it did help.