identifying difference of 531 vs 531 SL
11-14-12, 09:50 AM
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identifying difference of 531 vs 531 SL
not getting any response from framebuilders, So I guess I have to ask here...
I just picked up a frame,
the seat tube has the Reynolds imprint on it.
there is no question the tubing in the frame is 531, but I have heard these frames are 531SL
as the frame is chromed, It is easy to look for the reynolds name on the tubing.
tips anyone on telling the difference?
I just picked up a frame,
the seat tube has the Reynolds imprint on it.
there is no question the tubing in the frame is 531, but I have heard these frames are 531SL
as the frame is chromed, It is easy to look for the reynolds name on the tubing.
tips anyone on telling the difference?
11-14-12, 10:00 AM
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not getting any response from framebuilders, So I guess I have to ask here...
I just picked up a frame,
the seat tube has the Reynolds imprint on it.
there is no question the tubing in the frame is 531, but I have heard these frames are 531SL
as the frame is chromed, It is easy to look for the reynolds name on the tubing.
tips anyone on telling the difference?
I just picked up a frame,
the seat tube has the Reynolds imprint on it.
there is no question the tubing in the frame is 531, but I have heard these frames are 531SL
as the frame is chromed, It is easy to look for the reynolds name on the tubing.
tips anyone on telling the difference?
I've never heard of Reynolds 531SL. I've heard of Reynolds 531 and Columbus SL but never the two together.
Regarding the secret, why not tell us the name of your frame?
11-14-12, 10:12 AM
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Below the Reynolds 531 stamp should be another stamp with "D/BUTTED" and the tubing gauge. At least that's the way they did it though the 1970s. The standard Reynold 531 single butted seat tube was 21/24 gauge. I believe 531SL is 22/24 gauge. Lacking that, the other thing you could try and do is to measure the innner diameter of the bottom bracket ends of the seat and down tubes using a caliper, as it's the butts that are thinner on 531SL.
11-14-12, 10:16 AM
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I see in the picture, ....TED 20/23 (cant see the BUTTED as I only have the pictures so far)
I load a few pics after Im done cooking, A househusband's work is never done.....
531SL is the same as 531 Professional, the name was changed shortly after.
I load a few pics after Im done cooking, A househusband's work is never done.....
531SL is the same as 531 Professional, the name was changed shortly after.
Last edited by puchfinnland; 11-14-12 at 10:23 AM.
11-14-12, 10:20 AM
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Not exactly correct. 531SL was superseded by 531 Pro. SL used 531 stays, Pro used 753 stays.
11-14-12, 10:34 AM
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I stand corrected,
this bike frame should have 531 superlight tubing,
Well I might as well let the cat out,
Its a 1982-1983 Austro Daimler Ultima frameset, smoked chrome.
the decals are shot, but this frame is the same frame set as the Grail Bike I am looking for.
the 82-83 PUCH MISTRAL ULTIMA with drilled dropouts with 531 SL tubing
PUCH and AD are one in the same, in the final years of being imported to USA they did not bother doing the AD panto work on the seatstays and the fork crown,they put the PUCH panto on, the headbadge was even PUCH, only the decals said AD.
the serial numbers match perfectly,
PUCH ULTIMAS were chrome plated under that lovely Green paint.
So- I found a AD Ultima with bad chrome, and I think you can figure out what comes next!
this bike frame should have 531 superlight tubing,
Well I might as well let the cat out,
Its a 1982-1983 Austro Daimler Ultima frameset, smoked chrome.
the decals are shot, but this frame is the same frame set as the Grail Bike I am looking for.
the 82-83 PUCH MISTRAL ULTIMA with drilled dropouts with 531 SL tubing
PUCH and AD are one in the same, in the final years of being imported to USA they did not bother doing the AD panto work on the seatstays and the fork crown,they put the PUCH panto on, the headbadge was even PUCH, only the decals said AD.
the serial numbers match perfectly,
PUCH ULTIMAS were chrome plated under that lovely Green paint.
So- I found a AD Ultima with bad chrome, and I think you can figure out what comes next!
11-14-12, 12:11 PM
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The definitive proof would be to chop up the frame and measure the wall thicknesses of the tubes.
Source: The Paterek Manual, 1st Edition
Source: The Paterek Manual, 1st Edition
11-14-12, 12:25 PM
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11-14-12, 12:25 PM
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I stand corrected,
this bike frame should have 531 superlight tubing,
Well I might as well let the cat out,
Its a 1982-1983 Austro Daimler Ultima frameset, smoked chrome.
the decals are shot, but this frame is the same frame set as the Grail Bike I am looking for.
the 82-83 PUCH MISTRAL ULTIMA with drilled dropouts with 531 SL tubing
PUCH and AD are one in the same, in the final years of being imported to USA they did not bother doing the AD panto work on the seatstays and the fork crown,they put the PUCH panto on, the headbadge was even PUCH, only the decals said AD.
the serial numbers match perfectly,
PUCH ULTIMAS were chrome plated under that lovely Green paint.
So- I found a AD Ultima with bad chrome, and I think you can figure out what comes next!
this bike frame should have 531 superlight tubing,
Well I might as well let the cat out,
Its a 1982-1983 Austro Daimler Ultima frameset, smoked chrome.
the decals are shot, but this frame is the same frame set as the Grail Bike I am looking for.
the 82-83 PUCH MISTRAL ULTIMA with drilled dropouts with 531 SL tubing
PUCH and AD are one in the same, in the final years of being imported to USA they did not bother doing the AD panto work on the seatstays and the fork crown,they put the PUCH panto on, the headbadge was even PUCH, only the decals said AD.
the serial numbers match perfectly,
PUCH ULTIMAS were chrome plated under that lovely Green paint.
So- I found a AD Ultima with bad chrome, and I think you can figure out what comes next!
11-14-12, 12:48 PM
#11
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Always learning... nice chart John, thanks!
So for example, an early-mid '70s bike with 531 butted decals, would this be the same as the Competition or Club Sport entries in the table above?
So for example, an early-mid '70s bike with 531 butted decals, would this be the same as the Competition or Club Sport entries in the table above?
11-14-12, 02:05 PM
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I saw the results... Thank goodness I was not the one to do it.
11-14-12, 02:46 PM
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11-14-12, 02:53 PM
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it is on the seat tube, sorry if I made a mistake
11-14-12, 02:55 PM
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PUCH and AD are one in the same, in the final years of being imported to USA they did not bother doing the AD panto work on the seatstays and the fork crown,they put the PUCH panto on, the headbadge was even PUCH, only the decals said AD.
the serial numbers match perfectly
the serial numbers match perfectly
11-14-12, 03:00 PM
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11-14-12, 03:04 PM
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PUCH Ultimas are advertised it as 531SL, and this is no fake!
11-14-12, 03:07 PM
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11-14-12, 03:12 PM
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It designates 20 gauge tubing at the butts with a 23 gauge tubing middle section. This translates to 0.035" thick (approx. 0.89mm) at the butts and 0.025" thick (approx. 0.64mm) in the middle.
11-14-12, 03:15 PM
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11-14-12, 03:25 PM
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That doesn't really match anything in the chart if that is the seat tube? Maybe a 531 competition downtube match?
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11-14-12, 03:30 PM
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the frame should date 1982-83, maybe even 84.
could be competition..
shame the seat tube decal is missing.
could be competition..
shame the seat tube decal is missing.
11-14-12, 03:37 PM
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11-14-12, 03:39 PM
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That fork decal is from the period when Reynolds 531SL was replaced by Reynolds 531 Professional. Both 531 SL and 531 Proferssional had their own fork blade decals with 531 in red.
Edit: The only Reynolds 20/23 gauge seat tube listed at this time was Reynolds 501.
Edit: The only Reynolds 20/23 gauge seat tube listed at this time was Reynolds 501.
Last edited by T-Mar; 11-14-12 at 03:46 PM.
11-14-12, 03:44 PM
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this thread is getting better all the time!
shame the frame is too small for me
but nelli is growing!
I have been looking for this frame in 57-59 for several years.
shame the frame is too small for me
but nelli is growing!I have been looking for this frame in 57-59 for several years.