Which Campy derailleur?
02-02-20, 08:37 PM
#26
Campy NR / SR forever
I don't think so. I am not aware of any 27.2 OD seat tube. 28.6 (Imperial) and 28.0 (Metric) were the standard OD for Reynolds 531. Columbus only made 28.6 OD (for SL/SP).
27.2 is standard ID size for Imperial seat tubes, with 27.0, various 26.x and 25.x sizes for sleeved seat tubes and thicker wall tubing.
27.2 is standard ID size for Imperial seat tubes, with 27.0, various 26.x and 25.x sizes for sleeved seat tubes and thicker wall tubing.
02-02-20, 09:28 PM
#27
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That front derailleur body got bent closed at some point- encouraging it to fit was probably the safest way to go.
At 28.07 mm for the other frame suggests to me metric tubing with paint.
be interesting the top tube diameter on that frame. Typical metric top tube is 26.0 bare.
At 28.07 mm for the other frame suggests to me metric tubing with paint.
be interesting the top tube diameter on that frame. Typical metric top tube is 26.0 bare.
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02-02-20, 09:54 PM
#28
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That front derailleur body got bent closed at some point- encouraging it to fit was probably the safest way to go.
At 28.07 mm for the other frame suggests to me metric tubing with paint.
be interesting the top tube diameter on that frame. Typical metric top tube is 26.0 bare.
At 28.07 mm for the other frame suggests to me metric tubing with paint.
be interesting the top tube diameter on that frame. Typical metric top tube is 26.0 bare.
----Seat Tube and Down Tube are both Metric-standard 28.0mm on a Steyr (versus 28.6mm for English/Imperial).
----Top Tube is English/Imperial 25.4mm (versus 26.0mm for Metric).
BB is English threaded.
Headset is 26X1mm threaded, stem is 22.0mm quill.
Seatpost measures 25.6mm in most cases, at least for both of my non-Reynolds frames.
My two points of reference here are a 1968 SEARS 10 SPEED and a 1972 Steyr Clubman.
Last edited by dddd; 02-02-20 at 11:29 PM.
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02-02-20, 11:46 PM
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Here's some pics of mine. It had no decals or headbadge to identify it, but bf members helped identify it as probably being s Sears Ted Williams Sport Racer because of the Campy components on it, and the gold brake levers. I replaced the steel wheels and handlebars with aluminum to reduce weight.
How I got it.
After a lot of polishing.
How I got it.
After a lot of polishing.
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02-03-20, 10:35 AM
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That front derailleur body got bent closed at some point- encouraging it to fit was probably the safest way to go.
At 28.07 mm for the other frame suggests to me metric tubing with paint.
be interesting the top tube diameter on that frame. Typical metric top tube is 26.0 bare.
At 28.07 mm for the other frame suggests to me metric tubing with paint.
be interesting the top tube diameter on that frame. Typical metric top tube is 26.0 bare.
02-03-20, 11:13 AM
#31
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That's about what I got, measured over the paint.
I'm pretty sure that we'll never know how the Steyr factory came up with such a potpourri of dimensions for their frames.
The bigger, thicker-walled steer tube meant that they could presumably save cost by not using butted tubing, much as on bikes that use a .833" or 21.1mm steer tube ID.
I forgot to mention that these bikes also have English pedal threading. I forget if the front hub width is exactly 100mm or not(?), though I do have Phil hubs (@100mm front, 120mm rear) on my blue Steyr Clubman at this point.
I'm pretty sure that we'll never know how the Steyr factory came up with such a potpourri of dimensions for their frames.
The bigger, thicker-walled steer tube meant that they could presumably save cost by not using butted tubing, much as on bikes that use a .833" or 21.1mm steer tube ID.
I forgot to mention that these bikes also have English pedal threading. I forget if the front hub width is exactly 100mm or not(?), though I do have Phil hubs (@100mm front, 120mm rear) on my blue Steyr Clubman at this point.
Last edited by dddd; 02-03-20 at 11:18 AM.
02-03-20, 12:45 PM
#32
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That's about what I got, measured over the paint.
I'm pretty sure that we'll never know how the Steyr factory came up with such a potpourri of dimensions for their frames.
The bigger, thicker-walled steer tube meant that they could presumably save cost by not using butted tubing, much as on bikes that use a .833" or 21.1mm steer tube ID.
I forgot to mention that these bikes also have English pedal threading. I forget if the front hub width is exactly 100mm or not(?), though I do have Phil hubs (@100mm front, 120mm rear) on my blue Steyr Clubman at this point.
I'm pretty sure that we'll never know how the Steyr factory came up with such a potpourri of dimensions for their frames.
The bigger, thicker-walled steer tube meant that they could presumably save cost by not using butted tubing, much as on bikes that use a .833" or 21.1mm steer tube ID.
I forgot to mention that these bikes also have English pedal threading. I forget if the front hub width is exactly 100mm or not(?), though I do have Phil hubs (@100mm front, 120mm rear) on my blue Steyr Clubman at this point.
02-03-20, 09:09 PM
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Hey Was there any conclusion to what kind of bicycle that is? Tons of youtube hits but no good leads?
JJ
JJ
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02-03-20, 09:57 PM
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I cant wait for the season. I have to get together with STeve and possibly put together a ride this summer from my house or my new "bikecave" Give people a couple months to plan..maybe get 30 guys out.
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From Illinois. Collector of many fine bicycles from all over the world. Subscribe to my Youtube channel. Just search John's vintage road bike garage
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