Weird Front Mech - Help!
07-22-21 | 05:35 PM
#1
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Weird Front Mech - Help!
I'm rebuilding a Bianchi Sika which has a strange LX front derailleur. Instead of the usual hex bolt clamp for the cable, it has a machined and recessed round thingy that looks like it will take the end of the cable housing. Anyone have experience with this?
07-22-21 | 08:11 PM
#4
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Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970
Likely a bottom pull FD set up for top pull. My 1990 Trek 970 has that. Cable runs from the top and the, housing goes into the derailleur arm and inner cable continues to anchor under a bolt below. Inner cable stays stationary and the housing moves the arm.
07-23-21 | 10:20 AM
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07-23-21 | 02:04 PM
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After many decades of working on bikes this is the first time seeing this for me too. Thanks!
07-23-21 | 02:53 PM
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Seen this only a few times. But those of us who have worked on Simples sliding ft ders know well the nature of a cable stop moving type of design. The longer one does the old bike servicing the more simple logic helps
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07-23-21 | 05:26 PM
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That was one way to do top pull cables before derailers were designed for top pull. Another way was to run the cable from a stop, down around a pulley, and back up to the derailer. Keeps the front cable out of the gunk that bottom routed cables can encounter.
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Stuart Black
Dreamin' of Bemidji Down the Mississippi (in part)
Plan Epsilon Around Lake Michigan in the era of Covid
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
