Old 06-10-19, 08:49 PM
Lugged, Dura-Ace Glory
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Bikes: '87 Schwinn Prologue - '74 Schwinn Paramount P15 - '8X Davidson Impulse - '88 Land Shark Road Shark - '85 Specialized Allez SE - '81 Univega Gran Premio - '92? Bushnell Track Bike

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If all the components are stock (and they look so), that Deore mountain RD should take 34T no problem--though if a B-screw exists on this generation of Deore (I don't recall seeing one as the anchor pivot was non-sprung), it may likely need winding out. Even an earlier 600 Arabesque GS/long cage RD was spec'd to handle 34T--I've done it and it works very well. The RD on this bike looks a little worse for the non-wear. :/ Maybe some Tri-Flow will help.

Just checked--34T max cog is spec'd.
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