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A mysterious braze-on

Old 04-26-15, 07:48 AM
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A mysterious braze-on

Picked up an interesting frame yesterday, and it has a braze-on under the downtube and near the shifter mounts that I've never seen before. Builder's error? Flick stand mount? Emergency poker? Any ideas?

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Old 04-26-15, 07:52 AM
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Dripping paint that fossilized?
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Old 04-26-15, 07:54 AM
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Originally Posted by nlerner
Picked up an interesting frame yesterday, and it has a braze-on under the downtube and near the shifter mounts that I've never seen before. Builder's error? Flick stand mount? Emergency poker? Any ideas?

Never seen that, head lug looks time was spent on it. What kind of frame?
My guess a custom.
Only idea that comes to mind is to aid wiring, and that is just a dart toss.
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Old 04-26-15, 07:56 AM
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Rust stalactite?
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Old 04-26-15, 07:58 AM
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Is there something down near the BB? I know it is an odd place but could it have been a pump peg?
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Old 04-26-15, 07:59 AM
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You're very gravity focused today, Bob!

It is a very nicely made frame. I hope to take a bunch of pics after today's ride (on a different bike; this one's not built up yet!). Here's the preview: nicely thinned Nervex Pro lugs, English BB threading and fork steerer, sloping fork crown, takes a 27.0mm seat post, six-digit serial # under the BB, no holes for a badge on the head tube, fastback seat stay treatment, two brake-cable eyelets on top of the top tube, 124mm rear spacing.
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Old 04-26-15, 08:00 AM
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Originally Posted by Bianchigirll
Is there something down near the BB? I know it is an odd place but could it have been a pump peg?
That was my first thought, but there's no corresponding stop under the BB. Maybe designed for a clamp-on stop on the other end if for a pump?
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Old 04-26-15, 08:03 AM
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Originally Posted by nlerner
You're very gravity focused today, Bob!

It is a very nicely made frame. I hope to take a bunch of pics after today's ride (on a different bike; this one's not built up yet!). Here's the preview: nicely thinned Nervex Pro lugs, English BB threading and fork steerer, sloping fork crown, takes a 27.0mm seat post, six-digit serial # under the BB, no holes for a badge on the head tube, fastback seat stay treatment, two brake-cable eyelets on top of the top tube, 124mm rear spacing.
What a tease. You're making us wait for the pics.
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Old 04-26-15, 08:26 AM
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It's for cleaning the bugs out of your teeth.
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Old 04-26-15, 08:39 AM
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Originally Posted by lostarchitect
It's for cleaning the bugs out of your teeth.
That might come in handy since at my age, my teeth are removable.
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Old 04-28-15, 08:29 AM
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At last, here are pics of the complete frame. Any guesses as to manufacturer? Here again are the specs: English BB threading and fork steerer, takes a 27.0mm seat post, Campy dropouts front and rear, frame and fork weigh 6 lbs even, 124mm rear spacing:

















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Old 04-28-15, 08:38 AM
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No guesses but it's beautiful.
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Old 04-28-15, 08:57 AM
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warning over-inflation of the front tire. once it exceeds optimal pressure, it's force-exploded. spec-op way, you know...
i mean. beautiful frame, regardless.
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Old 04-28-15, 08:59 AM
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Welcome to the "not sure what it is, but it looks nice" club.
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Old 04-28-15, 09:04 AM
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Originally Posted by orangeology
warning over-inflation of the front tire. once it exceeds optimal pressure, it's force-exploded. spec-op way, you know...
i mean. beautiful frame, regardless.
I like that. Kind of like a curb feeler.
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Old 04-28-15, 09:13 AM
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Maybe for some kind of extinct or homebrewed "flickstand"?
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Old 04-28-15, 09:35 AM
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no idea here, either but i suspect this (early) frame was given those WB bosses (and MAYBE the shifter bosses and TT cable guides) later in life.
Very nice Brit frame, probably also got the rear opened up from 120 to 124 (just couldn't go all the way to 126, huh?).
The fork crown is either a Davis or Haden so fork was probably concurrent with the frame, I wonder if the BB shell is a Gargette Bros or that other brand that has similar stamp but different initials, and also if the "72" at end of serial number is the year built...
27 seatpost might indicate a slightly heavier/thicker wall seat tube than the usual 531DB.
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Old 04-28-15, 09:57 AM
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Originally Posted by unworthy1
no idea here, either but i suspect this (early) frame was given those WB bosses (and MAYBE the shifter bosses and TT cable guides) later in life.
Very nice Brit frame, probably also got the rear opened up from 120 to 124 (just couldn't go all the way to 126, huh?).
The fork crown is either a Davis or Haden so fork was probably concurrent with the frame, I wonder if the BB shell is a Gargette Bros or that other brand that has similar stamp but different initials, and also if the "72" at end of serial number is the year built...
27 seatpost might indicate a slightly heavier/thicker wall seat tube than the usual 531DB.
I like the shifter bosses added later theory. That would make it an invisible stop for the shifter clamp; one that fits in the gap of the clamp and engages the clamp bolt.
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Old 04-28-15, 10:02 AM
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Originally Posted by nlerner
That was my first thought, but there's no corresponding stop under the BB. Maybe designed for a clamp-on stop on the other end if for a pump?
That was my guess too (broken pump peg) but it seems odd to do one but not the other.
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Old 04-28-15, 10:37 AM
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Another guess - not seen above: a mount for one of those wire thingies that rub on the tire to knock of debris before they cause a puncture.

I recall seeing very similar bike frames in a shop in Feltham (London suburb) in 1974. Sorry, don't remember the name of the shop, did purchase a Meada (Suntour) gold 5 speed corn cob (14-15-16-17-18) freewheel from them.
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Old 04-28-15, 10:39 AM
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Originally Posted by unworthy1
27 seatpost might indicate a slightly heavier/thicker wall seat tube than the usual 531DB.
I thought there was a 531DB with a 27 seatpost. On tandems maybe?
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Old 04-28-15, 11:10 AM
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Originally Posted by due ruote
I like the shifter bosses added later theory. That would make it an invisible stop for the shifter clamp; one that fits in the gap of the clamp and engages the clamp bolt.
I tend to agree since 1974 would have pre-dated the frame having bosses originally. Just something fancier than the little flat triangles I've seen on other frames for the clamp stop.
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Old 04-28-15, 11:19 AM
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Originally Posted by due ruote
I like the shifter bosses added later theory. That would make it an invisible stop for the shifter clamp; one that fits in the gap of the clamp and engages the clamp bolt.
Clever! I like it. This gets my vote.
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Old 04-28-15, 11:25 AM
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Old 04-28-15, 11:27 AM
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I like unworthy1's thinking that this may have been a stop for clamp-mounted shifters and the current shifter bosses may have been added later. It's a beautiful frame, and one built with a lot of care. But looking at the junction between the shifter bosses and the down tube, there is a slight gap which does not appear to have same consistent quality of workmanship as the rest of the frame.
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