Bicycle Mechanics - Flat bar road bike, MTB shifter for the front derailleur?
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11-17-11, 04:36 AM
I am converting a road frame thatīs slightly too big for me into a flat bar.
Set up is to be 3x8, all the bits are waiting to go on.
The LH shifter came off a wrecked commuter bike with a top pull triple front derailleur.
I want to run it with a standard īroadī down pull triple front derailleur as the frame doesnīt have any top tube or seat tube cable stops, and thatīs the only FD I have lying around.
Will it work?
Thanks in advance. I searched but couldnīt find anything specific.
11-17-11, 04:44 AM
I should also mention that I have a cheap thumb shifter kicking around in the parts bin so I could just use that for the front derailleur and forget about a triple indexed shifter.
By the way I have other drop bar road bikes which I love, just looking to make something of this frame.
11-17-11, 04:56 AM
If it's a multi-click (like a current Sram Attack for instance) or friction shifter then I think you could probably get it to work. If it's a three or four position index shifter then I wouldn't hold out much hope for making that work, assuming you're talking about a road front derailleur.
EDIT: actually, I guess I've been on touring setups with trekking bars similar to the setup you're talking about that worked OK. So it might work out with a variety of shifters and FDs.
there are flat bar shifters for road FDs.
but for the cheap method, that thumb shifter should work plenty fine.
11-17-11, 08:25 AM
I think I will go with the cheap arse method, it would be annoying to cable everything up and find it doesnt work.
Yeah, go with friction shifting.
THe other option would be to get a bottom pull mtb front derailleur. THese can cost as little as ~15 dollars (what is that in euros? 10? 25,000?)
11-22-11, 05:55 AM
Looking for bottom pull MTB front derailleurs, the max front chainring size is 48, and the FSA chainring on my triple is 53.
Does anyone make a suitable MTB front mech for this size of chainring?
Or will I have to take a downpull MTB front mech for a date with the grinder at work?
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