|   Best way to align R. Derailleur hanger? | joe friday
Jul 10, 2003 10:29 AM | | in ascending order of accuracy--cresent wrench and eyeball and then
Park tool. i was wondering if there are any other ways to get a
straight hanger? I've replaced the "replaceable hanger" the derailleur, chain, chainring and bought a new--used set of shifters.
it still won't index "perfectly". i've been riding for over a decade
so i'm pretty good w/the wrench. Any suggestions?
many thanks!! |
| Park DAG 1........... | farmer rick
Jul 10, 2003 1:11 PM | | is the only way you will get it perfect. I have a pretty good eye, been straightening bent/twisted things for years.(except my mind 8-)) My shifting was quite good after using a 'hammer and eye' in the vise type straightening on the dropout. After using the Park tool it is now better.
My alignment was out slightly in the vertical plane, was correct in the horizontal plane. This could only be noticed and corrected by using the Park tool.
Of course this tool only works if the rear triangle and the wheel are true and straight as well! |
| Park DAG 1... | B R H
Jul 10, 2003 3:08 PM | | I'm with you here except that I don't think it really matters if the wheel is straight as long as you rotate the wheel with the tool and measure to the same point on the wheel (see Park website).
This afternoon, I fashioned a crude tool to check my derailleur alignment. I found that my derailleur was WAY off in the vertical direction. I too had always focused on horizontal alignment because it was fairly easy to sight down the chainline and get it close enough. I will be purchasing the DAG-1 soon because the tool I made isn't accurate enough, but what a huge difference in my shifting performance! A real eye-opener. This was a new derailleur hanger, so never assume things are straight until you actually measure them on the bike! |
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