I did a few searches and came up pretty empty with a 'real' solution to add a derailleur hanger to a single speed frame. Tonight, I dug through my spare parts pile and worked out a solid and reliable solution, it took about 15 minutes and some *basic to my garage* tools. Hopefully it will come in handy next time someone Googles for an hour and comes up empty.
Specifics for this mod, but this may work on others:
Frame: Gary Fisher Rig 2006-2008ish model. (he wasn't sure)
Hanger: Optima Baron Derailleur hanger #201 Linky: http://www.derailleurhanger.com/optima.htm
*a Marin derailleur hanger may work also, I didn't have one handy, the Baron hanger was in the parts bin*
3) 3mm screws, but any #4ish screw will likely work.
1) #38 drill bit (to fit my 3mm -.5 tpi tap)
1) 3mm tap (again, any #4ish counter sink screw should work)
The process: (I did this by hand, but a drill press would be handy to make sure you're perpendicular to the frame)
With some vice grips or clamps (I used spring clamps) Set derailleur hanger over the dropout.
Drill one hole (center preferably)
Tap hole (use plenty of cutting fluid)
deburr hole (a larger bit just hand twisted works well, or a razor blade also works)
Screw the center screw in place, adjust hanger alignment as necessary.
Remove one clamp, drill and tap another hole. set screw in place.
Drill and tap last hole.
Remove all screws, clamps and hangers
deburr the two holes
Clean up the mess
Use a dab of blue locktite and thread in the screws. Make sure screws do not protrude into the hub mounting surface, if they do get new screws or shorten the ones you have.
It should look like this when done:
From the rear, notice an offset to the hanger, this way the offset is correct:
This step is optional, but I like to make sure the dropouts are square any time I get a *new* frame.
Yup, looks good. (note, alignment tool isn't 'quite' set up correctly, but it's adequate for this check)
Results 1 to 8 of 8
Check out the hottest mountain bike products from these brands!
See All Interbike Coverage - Click Here »