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DT shifters on a new frame?(10 posts)

DT shifters on a new frame?Islandrider
Apr 20, 2003 9:20 AM
Is it possible to use my Dura Ace DT 7 speed shifters on a new Quintana Roo frame that doesn't have the mounting braze-ons' on the downtube? Is there an adaptor available to do this? Can I put them on the bars somehow? I would like to use the drivetrain components from my 7 speed on this new frame for the time being since the derailleur, chain, freehub,and shifters are all brand new. In time I'll pony-up for some 9 speed components.

Thanks.
Probably won't work.Spoke Wrench
Apr 20, 2003 9:45 AM
It's possible to find a clamp-on down tube shifter boss but the only ones I've ever seen only fit standard size steel frames. I've heard of a gizmo that converts down tube shifters to bar end shifters, maybe from Rivendel?, but I've never actually seen one.
bar end adapter pods....Rusty Coggs
Apr 20, 2003 4:11 PM
...at www.rivendellbicycles.com
Could try Kelly Take Offs too. nmOldEdScott
Apr 21, 2003 8:56 AM
Will 7 spd hubs fit your new frame? (nm)B2
Apr 20, 2003 6:37 PM
You got a bigger problem than the shiftersLC
Apr 21, 2003 7:57 AM
7 speed freehub probally won't work on that frame
most 7 speed spacing = 126, your frame = 130
Even with strategically placed washers?OldEdScott
Apr 21, 2003 8:54 AM
Not a big deal.Spoke Wrench
Apr 21, 2003 1:45 PM
At the very worst, all you'd need is a new axle set. I'd measure first though, lots of 7-speed cassette hubs are 130mm over locknut dimension. .
re: DT shifters on a new frame?DaveLobster
Apr 21, 2003 9:52 AM
If you don't have brazed-on DT shifter bosses on the downtube, you probably can still use the shifters, just not on the downtube. Profile makes an adaptor that allows you to place downtube shifters on their aerobars. Since you have a bike marketed specifically for multi-sport, I assume you are going to use aerobars anyway.

As far as the hub spacing, assuming that the hubs are spaced 126mm and the frame 130mm, you can just add spacers to the non-drive side and re-dish the wheel. You'll have to play with the cone/locknut on the other end of the axle to get about the same amount of axle showing on both sides, but it will work. I've done just what you are considering, bought a new frame, used the old components (7sp DA) for a year, then upgraded. -Dave
Profile "Swift Shift" is what I was referring to....DaveLobster
Apr 21, 2003 9:59 AM
http://www.profile-design.com/acc_swiftshift.html