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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 11-06-05, 12:50 PM   #1
eddiebrannan
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sorry if this is old but ooh cutouts
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Old 11-06-05, 01:01 PM   #2
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is this for real? exposed bearings? either the tire is all out of whack of the fork isn't even?
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Old 11-06-05, 01:03 PM   #3
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What is the purpose of slotted chain stays? Seems like it would be flexy.
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Old 11-06-05, 01:11 PM   #4
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Quote:
Originally Posted by jamey
exposed bearings?
Remember that track bikes used to be exclusively used on indoor, flat, wooden surfaces, so not much chance for water/road grit/grime to get in there...

No seals = faster.
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Old 11-06-05, 01:13 PM   #5
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Quote:
Originally Posted by BostonFixed
What is the purpose of slotted chain stays? Seems like it would be flexy.
....and drag....
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Old 11-06-05, 01:27 PM   #6
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you mean you guys don't have stash pockets in your chainstays as well?
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Old 11-06-05, 02:05 PM   #7
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more like that here
http://www.speedbicycles.ch/234/win_004.html
http://www.speedbicycles.ch/234/win_040.html
http://www.speedbicycles.ch/234/win_039.html
http://www.speedbicycles.ch/234/win_024.html
http://www.speedbicycles.ch/234/win_023.html
http://www.speedbicycles.ch/234/win_021.html
http://www.speedbicycles.ch/234/win_005.html
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Old 11-06-05, 02:39 PM   #8
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oh, that makes a little more sense...
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Old 11-06-05, 03:07 PM   #9
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WOW nice bikes!
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Old 11-06-05, 03:17 PM   #10
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Quote:
Originally Posted by BostonFixed
What is the purpose of slotted chain stays? Seems like it would be flexy.

weight, clearly
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Old 11-06-05, 03:26 PM   #11
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Quote:
Originally Posted by dolface
more like that here
What are those stays filled with. I'm wondering if it is some kind of epoxy.

I'm sure painting the inside of those was a chore.
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Old 11-06-05, 05:18 PM   #12
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still seems like it would create a good bit more drag and not really lighten it up all that much. looks awesome, but doesn't seem too practical
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Old 11-06-05, 07:13 PM   #13
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drillium + 1 = millium?
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Old 11-06-05, 07:51 PM   #14
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Back in the days of the classic Masis and SanRenshos, everything got cut out. People didn't think about aero issues too much, and they even did this kind of stuff on road bikes. The Masi chainstays were sometimes cut out and inserts brazed into the cutouts which closed the openings and actually increased stiffness. I think that's what you're seeing in those speedbicycle images.

As for exposed bearings, it was common practice to take off the grease shields or dust caps on the pedals, hubs, bottom bracket, etc., and lubricate them with machine oil. They sure spun like crazy. You still actually get a fair amount of dust and grit from riding on a track, but the practice was to squirt oil into the bearings each time you raced -- both to freshen the oil and to wash out crap. I saw a beautiful Nagasawa not long ago that had this done to the whole Nuovo Record Pista gruppo -- today this practice pretty much reduces the value of the group to zero, but you saw a lot of it thirty years ago.
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Old 11-07-05, 02:21 AM   #15
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The wheel is offset in the fork for the banking?
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