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<blockquote data-quote="ajaf1656" data-source="post: 16596483" data-attributes="member: 196707"><p>I couldn't say when front derailleurs became widely used on bikes, but for a long time. More and more bikes have been eliminating the front derailleurs by running narrow chains and more cogs on the rear to achieve comparable gear ratios. The front chainrings are a much larger jump in gearing so you can probably make due with shifting the rear only as long as you aren't crossing up the chain by being in the large or small on both ends. If you want to get really exact you can use a gear-inch calculator to map out all the combinations so you make the most efficient use of what you have available.</p></blockquote><p></p>
[QUOTE="ajaf1656, post: 16596483, member: 196707"] I couldn't say when front derailleurs became widely used on bikes, but for a long time. More and more bikes have been eliminating the front derailleurs by running narrow chains and more cogs on the rear to achieve comparable gear ratios. The front chainrings are a much larger jump in gearing so you can probably make due with shifting the rear only as long as you aren't crossing up the chain by being in the large or small on both ends. If you want to get really exact you can use a gear-inch calculator to map out all the combinations so you make the most efficient use of what you have available. [/QUOTE]
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