Weird Front Mech - Help!
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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?
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Can you post pictures? I've never seen one that doesn't have a bolt-type clamp of some sort.
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Looks like top pull cable routing if that helps....
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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.
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Like this.
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#6
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Note that in this setup, the cable housing needs to have enough of a curve to allow the housing to move downward when the shifter is activated.
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Thanks, new to me as well.
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So is it correct that the cable end is held fast to the frame and the housing moves to change the DR position?
That's a new one for me too!
That's a new one for me too!
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After many decades of working on bikes this is the first time seeing this for me too. Thanks!
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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 Andy
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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.
What’s the question?
What’s the question?
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Stuart Black
Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
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!