Show Us Your Seat Lugs
07-26-22, 08:08 PM
#126
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Last edited by rjhammett; 07-26-22 at 08:19 PM.
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07-26-22, 08:30 PM
#127
verktyg
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My Touring And Rough-Stuff Frames - Nothing Fancy
I built this frame for touring in 1975-76. It sat unpainted until 1992 because in late 1976's we started rough-stuff riding off road on road bikes and I never got back into touring.
Hand cut lugs and flat seat stay caps ala Bertin except smaller to fit the 1/2" pencil seat stays.
Rough-Stuff frame I built in 1992 for off road trekking. Nothing fancy, just functional and well built... Done in one day sort of.
verktyg
Hand cut lugs and flat seat stay caps ala Bertin except smaller to fit the 1/2" pencil seat stays.
Rough-Stuff frame I built in 1992 for off road trekking. Nothing fancy, just functional and well built... Done in one day sort of.
verktyg
__________________
Don't believe everything you think! History is written by those who weren't there....
Chas. ;-)
Don't believe everything you think! History is written by those who weren't there....
Chas. ;-)
Last edited by verktyg; 07-26-22 at 08:35 PM.
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07-26-22, 09:19 PM
#128
verktyg
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A Few More Frames
For me the finish on the seat lugs and stay tops has always been a sign of the quality of workmanship on a frame. Even if it's a plain production model.
My 1965 Swiss made Tigra.... Super crisp lines.
1975 Raleigh with "Brampton Shot In" fast back stays. Sloppy true to Raleigh form...
1973 B. Carre built Lejeune Champion Du Monde
1971 Hetchins Italia
Early 80's Gios Torino
verktyg
My 1965 Swiss made Tigra.... Super crisp lines.
1975 Raleigh with "Brampton Shot In" fast back stays. Sloppy true to Raleigh form...
1973 B. Carre built Lejeune Champion Du Monde
1971 Hetchins Italia
Early 80's Gios Torino
verktyg
__________________
Don't believe everything you think! History is written by those who weren't there....
Chas. ;-)
Don't believe everything you think! History is written by those who weren't there....
Chas. ;-)
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07-26-22, 11:32 PM
#129
blahblahblah chrome moly
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Originally Posted by smd4
Withholding one little bit of information… or even many bits…won’t result in fewer book sales. But it is uncool, especially when you’re holding yourself out to be an expert in a subject.
—smd4, who has two hobby-related books in the Library of Congress.
—smd4, who has two hobby-related books in the Library of Congress.
Though I love me some free book-publishing advice, how about some more seat lugs?
Bianchi Competizione, mid-'60s maybe?
Bianco, circa 1947:
Caminade Caminargent, probably around 1950
Eisentraut, circa 1981:
Jeff Lyon, circa '86:
OK those last two aren't lugs, blame my poor reading-comprehension.
Mark B
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07-27-22, 06:29 AM
#132
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Originally Posted by bulgie
Eisentraut, circa 1981:
.........
Mark B
It does make me wonder how much the strength of the tube was compromised, and did Al add an inner sleeve (or something else) to compensate??
It also makes me appreciate the simplicity and mechanical efficiency of the conventional seatpost binder bolt arrangement, even if it's not the most streamlined.
As a bit of a tangent, how well did the Eisentraut design work? Any problems with seatpost slippage?
Steve in Peoria, blessed, or perhaps cursed, with conventional seatpost binder designs.
07-27-22, 05:18 PM
#133
blahblahblah chrome moly
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Originally Posted by steelbikeguy
I'd seen photos of those unique Eisentraut seatpost binders before, but this shot showing the hole for the binder makes it obvious just how much of the top tube was removed to make room for the binder.
It does make me wonder how much the strength of the tube was compromised, and did Al add an inner sleeve (or something else) to compensate??
It also makes me appreciate the simplicity and mechanical efficiency of the conventional seatpost binder bolt arrangement, even if it's not the most streamlined.
As a bit of a tangent, how well did the Eisentraut design work? Any problems with seatpost slippage?
Steve in Peoria, blessed, or perhaps cursed, with conventional seatpost binder designs.
It does make me wonder how much the strength of the tube was compromised, and did Al add an inner sleeve (or something else) to compensate??
It also makes me appreciate the simplicity and mechanical efficiency of the conventional seatpost binder bolt arrangement, even if it's not the most streamlined.
As a bit of a tangent, how well did the Eisentraut design work? Any problems with seatpost slippage?
Steve in Peoria, blessed, or perhaps cursed, with conventional seatpost binder designs.
I never owned one so I can't comment on efficacy or durability, but I trust Eisentraut enough to pull it off. Or not release it to the world if it wasn't great.
A couple other builders have used a similar clamp, like Keith Lippy who used it on tandems for a few years. Some 'threadless' stems have been made that clamp the steerer that way too.
As far as holding the seatpost, Frejus did it similar for decades, no prob (but without the hole going through the TT; it passed underneath). Yes many Frejus frames used a slit lug, and the bolt was a fairly conventional pinchbolt, but others (I think it was cheaper models) had no slit and the bolt pushed on the post pretty much exactly how the Eisentraut does.
I'm not a fan of "pusher" bolts like this in general; I think it's inelegant engineering compared to a "pull" type pinchbolt. Cinelli 1R stem is an example. They have many fans but everyone will admit their reliability record is poor, with bars slipping, internal parts cracking etc, and they're not even particularly lightweight. It's just a cool look. That's how I feel about this 'Traut — cool looking, but not my cuppa tea in engineering terms. Even Albert soon abandoned it, going back to pinchbolts.
Mark B
Last edited by bulgie; 07-27-22 at 05:22 PM.
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07-27-22, 06:00 PM
#134
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Dave Moulton Custom Touring
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07-28-22, 01:45 PM
#138
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None of these are mine - I wish - was just admiring these a week or so ago. Made by - Kelly Bedford - former Serotta Builder
Last edited by SoCaled; 07-29-22 at 10:27 AM.
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07-29-22, 04:01 PM
#144
señor miembro
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Originally Posted by smd4
How does the brake cable get past (through) the seatpost?
Originally Posted by P!N20
Magnets.
It's either evil black magic from the deh-veel, or there are two vertical slots cut in the seatpost.
But my guess is the deh-veel.
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08-01-22, 08:20 AM
#146
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Bottecchia
Pinarello Montello, Simple and smooth
Tommasini Tecno
Tommasini Sintesi,
On the Tommasinis, I like how they incorporated the "T" into the tip of the lug.
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08-01-22, 02:00 PM
#147
"part timer"
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The only photo I had handy - my Nobilette:
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08-01-22, 06:28 PM
#148
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Originally Posted by SuperLJ
The only photo I had handy - my Nobilette:
......
......
all in all, a pretty cool frame!
Steve in Peoria
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08-02-22, 12:48 AM
#149
"part timer"
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Originally Posted by steelbikeguy
Mark Nobilette doesn't get a lot of discussion here …
Someone once said that Mark has the "highest ratio of competence to humility" of any professional that they had ever met. I couldn’t agree more. Here’s a photo of the seat cluster on his personal bike:
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