what exactly is braze-on with derailers
08-01-03, 07:43 AM
#1
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what exactly is braze-on with derailers
What does the term braze-on mean. That i need to get the welder out and braze it on? Or what?
08-01-03, 07:48 AM
#2
feros ferio
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Some front derailleurs clamp onto the frame and require no braze-on. Others, lacking a clamp, bolt instead onto a fitting brazed onto the right side of the seat tube. Fortunately, there are clamp adaptors for many of the latter derailleurs.
The first time I saw a braze-on front derailleur fitting was on my friend's 1960 Schwinn Continental, which still had its original Simplex Competition suicide front shifter. My road bikes, completely spanning the 1960s and 1970s, all use clamp-on derailleurs. Sometime around 1990, braze-on front derailleurs became very popular on road bikes. The braze-ons are arguably slightly more reliable and save a bit of weight, but they can restrict your choice of chainring size and derailleur.
The first time I saw a braze-on front derailleur fitting was on my friend's 1960 Schwinn Continental, which still had its original Simplex Competition suicide front shifter. My road bikes, completely spanning the 1960s and 1970s, all use clamp-on derailleurs. Sometime around 1990, braze-on front derailleurs became very popular on road bikes. The braze-ons are arguably slightly more reliable and save a bit of weight, but they can restrict your choice of chainring size and derailleur.
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Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
08-01-03, 07:48 AM
#3
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Braze on means the mech (front) fits to a bracket brazed on to the seat tube. It's potentially lighter than a band-on, but less adjustable.(not important on an out and out road bike-but may be on a tourer if you really change the ring size.
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1985 Sandy Gilchrist-Colin Laing built 531c Audax/fast tourer.
1964 Flying Scot Continental (531)
1995 Cinelli Supercorsa (Columbus SLX)
1980s Holdsworth Mistral fixed (531)
2005 Dahon Speed 6 (folder)
(YES I LIKE STEEL)
2008 Viking Saratoga tandem
2008 Micmo Sirocco Hybrid (aluminium!)
2012 BTwin Rockrider 8.1
plus je vois les hommes, plus j'admire les chiens
1985 Sandy Gilchrist-Colin Laing built 531c Audax/fast tourer.
1964 Flying Scot Continental (531)
1995 Cinelli Supercorsa (Columbus SLX)
1980s Holdsworth Mistral fixed (531)
2005 Dahon Speed 6 (folder)
(YES I LIKE STEEL)
2008 Viking Saratoga tandem
2008 Micmo Sirocco Hybrid (aluminium!)
2012 BTwin Rockrider 8.1
08-01-03, 07:49 AM
#4
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There are, I think, two methods for attaching front derailleurs to a frame. The first is to clamp them onto the seat tube. The second is to bolt them onto a plate, which is welded onto the seat tube.
You can leave the welder to rest...
I would say that the latter is more old fashioned and that the former looks better.
Just my opinion.
You can leave the welder to rest...
I would say that the latter is more old fashioned and that the former looks better.
Just my opinion.
08-04-03, 06:53 AM
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The Flying Scot
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All within a minute of each other from Scotland, Holland and the States. Now is that service or what? 
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plus je vois les hommes, plus j'admire les chiens
1985 Sandy Gilchrist-Colin Laing built 531c Audax/fast tourer.
1964 Flying Scot Continental (531)
1995 Cinelli Supercorsa (Columbus SLX)
1980s Holdsworth Mistral fixed (531)
2005 Dahon Speed 6 (folder)
(YES I LIKE STEEL)
2008 Viking Saratoga tandem
2008 Micmo Sirocco Hybrid (aluminium!)
2012 BTwin Rockrider 8.1
plus je vois les hommes, plus j'admire les chiens
1985 Sandy Gilchrist-Colin Laing built 531c Audax/fast tourer.
1964 Flying Scot Continental (531)
1995 Cinelli Supercorsa (Columbus SLX)
1980s Holdsworth Mistral fixed (531)
2005 Dahon Speed 6 (folder)
(YES I LIKE STEEL)
2008 Viking Saratoga tandem
2008 Micmo Sirocco Hybrid (aluminium!)
2012 BTwin Rockrider 8.1
08-04-03, 11:06 AM
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Rivendell or Heron (I can't remember which one) also states an issue with the seattube sometimes breaking near the derailleur braze-on. Another reason, they suggest, to prefer a band-on derailleur.
