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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 02-25-10, 07:04 AM   #1
John_Roger
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Downtube shifter mounts

Has anybody cut these ugly bastards off before? They don't seem to be brazed on, i just hope i dont have to try and patch the holes when i'm done.


80's Schwinn Prelude
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Old 02-25-10, 08:48 AM   #2
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Don't do it. You will gain nothing by removing them and risk damaging the most heavily loaded tube on the frame.
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Old 02-25-10, 09:11 AM   #3
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Just put a button-head bolt (the ones that come with downtube-mounted cable guides are nice) or some heat-shrink, or something on there to avoid damaging the braze-on or yourself when you crash, and call it a day.
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Old 02-25-10, 09:23 AM   #4
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So ugly though! Is there a hole under them? If there isn't, i'm grinding them off.
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Old 02-25-10, 09:39 AM   #5
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So ugly though! Is there a hole under them? If there isn't, i'm grinding them off.
What kind of frame?
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Old 02-25-10, 09:39 AM   #6
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DT shifters are hot, what r u talking about?
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Old 02-25-10, 09:44 AM   #7
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No gears on the bike, its a 80's Schwinn Prelude.
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Old 02-25-10, 11:50 AM   #8
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Even if you remove the shift bosses from the frame it will still be a conversion. Honestly, it's not worth the trouble or risk of destroying the frame. Just leave them on there and deal with it.
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Old 02-25-10, 01:10 PM   #9
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Even if you remove the shift bosses from the frame it will still be a conversion. Honestly, it's not worth the trouble or risk of destroying the frame. Just leave them on there and deal with it.
+1
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Old 02-25-10, 01:38 PM   #10
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You can get cable guides that fit right on. Your frame will still have something on the tube, but at least it will be a nice, smooth bump the is chrome in color. Sure beats stressing your frame like that

http://harriscyclery.net/product/shi...osses-1737.htm

Just take the barrel adjusters off. Voil!
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Old 02-25-10, 02:32 PM   #11
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any time you take a grinding wheel to a frame, your doing something wrong. Mount a bell to one of them.
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Old 02-27-10, 10:15 AM   #12
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Get a set of these buggers:

http://aebike.com/page.cfm?action=de...=30&SKU=FS0900
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Old 02-27-10, 10:17 AM   #13
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Put some gears there, then man up and get a track bike.
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Old 02-27-10, 10:25 AM   #14
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So ugly though! Is there a hole under them? If there isn't, i'm grinding them off.
If you don't like how they look, save your pennies for a real fixed gear bike. But don't castrate the frame you have.
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Old 02-27-10, 10:31 AM   #15
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I've never seen those before, nice!
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Old 02-27-10, 11:06 AM   #16
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I'll answer the question, because an 80's Schwinn Prelude is a spectacularly unimportant bike and destroying one isn't going to make a difference in the universe.

There is no hole under the bosses. Just tubing.

They are brazed on, with brass. They can be unbrazed, but that will wreck the paint for several inches, and it takes more heat to unbraze them than it did to braze them in the first place. This is not good for the tubing.

They can be ground off. A carefully wielded angle grinder or Dremel tool can be used to remove the bulk of it, but you should not kid yourself that you have the skill to do the whole job with one. Nobody has the skill to do that: the underlying tubing is no more than one mm thick, and removing any of it will substantially weaken it. There was another member of this subforum who proudly showed us pics of his angle grinding job and it looked as though the bike had been attacked by a rabid beaver. That's a frame that is going to fail sooner or later. So use the power tools for most of the work and finish the job with a hand file. I'd use an 8" double cut.
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Old 03-01-10, 08:40 AM   #17
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If you don't like how they look, save your pennies for a real fixed gear bike. But don't castrate the frame you have.

I have no interest in a "real" fixed gear bike.
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Old 03-01-10, 09:05 AM   #18
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Use the shifter bosses to mount small animal skulls from the roadkill you find out riding.

People are finding fashionable uses for roadkill all the time these days, it is an actual trend.
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Old 03-01-10, 10:54 PM   #19
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man you can barely notice them half the time anyways

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Old 03-01-10, 11:00 PM   #20
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I have no interest in a "real" fixed gear bike.
pretty much sums it up, doesn't it? so you're doing this for fashion and you're going to make a perfectly good bike doomed to rot once you've realized that this "fad" is done? awesome. thanx.
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Old 03-01-10, 11:11 PM   #21
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pretty much sums it up, doesn't it? so you're doing this for fashion and you're going to make a perfectly good bike doomed to rot once you've realized that this "fad" is done? awesome. thanx.
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Old 03-02-10, 07:49 AM   #22
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If he's asking, he probably doesn't have the skills necessary to remove them without creating some stress risers, or a weak spot.

Dental insurance.
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Old 03-02-10, 05:24 PM   #23
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"...perfectly good bike..."

Well...
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Old 03-02-10, 05:40 PM   #24
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I'll bet a dollar to a dime that he does it anyway.
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Old 03-02-10, 05:41 PM   #25
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80's Schwinn Preludes can be decent rides.
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