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Bike Conversion(6 posts)

Bike Conversionjaybird
May 2, 2003 7:04 AM
I am looking to convert an old Trek 460 to a commuter bike and I was thinking about putting flat bars on it. I currently have it set up with 7sp Shimano 600 components, downtube shifters, RX100 brakes, campy SR hubs and velocity razor rims. Is there anything special I need to consider if I get new mtb type brake levers? Will they work with my brakes? Can I move my shifters to the bars? what do I use? Old gripshift, thumblevers? anything new that I can use?

I am open to suggestions... I just want a project...
Brake lever travel ...Humma Hah
May 2, 2003 7:36 AM
I have a crazy mix of brakes on the cruiser: old-style front long-pull calipers, rear v-brakes. V-brakes require a "short-pull" lever (a lever that gives a lot of cable movement for the amount of lever movement) and will not fully engage with older levers. However, to keep my levers matched, I used short-pull levers on both sides. This seems to work just fine on the front brakes.

Indexed shifters should be matched to the number of gears they're shifting. Old friction downtube shifters will generally operate about anything. Alas, this is at the risk of an episode I watched yesterday: I caught up with four roadies, one of whom was riding an old friction-downtube-shifted Giant (probably Shimano). Watched him shift the chain right off the right side of the big ring. He must do this frequently, because he nursed it back on with some deft wiggling of the lever, without stopping, losing about 10 yards on the rest of the group.
Index shiftingjaybird
May 2, 2003 7:52 AM
I do have index shifting currently. Is it possible to get some new 7sp bar mounted shifters anywhere? I dont really care if they are thumb or gripshit.
May not be current production. but should be available ...Humma Hah
May 2, 2003 8:12 AM
... my 1999 Diamondback Sorrento 3x7 MTB has some very nice trigger shifters on the bars. There should still be a lot of these parts still in LBS's, some brand-new, many lightly used by folks who upgraded to more gears.
Thanks. just noticed a typo. I actually like Gripshift. nmjaybird
May 2, 2003 9:33 AM
May 2, 2003 3:20 PM

That's a link to the QBP catalog ala Sheldon Brown at Harris Cyclery. That would take care of the rear shifting. Maybe you could do a single ring up front and seven in back? That would be pretty trick. Or just keep the down tubies for the front ring.

There's lots of MTB style canti brake levers that will pull the right amount of cable for your RX100s on the Harris site too.

Also, are you sure you won't need a new stem for the flat bar?