Maybe the term "Fender stay clamp bolts" might be also appropriate...

The legendary PowerCranks. Quite fun to mess around with! But I don't miss them :lol:

https://cimg5.ibsrv.net/gimg/bikefor...733477096d.jpg

Seatpost that allows the effective ST angle to be adjusted while riding:

https://cimg8.ibsrv.net/gimg/bikefor...fbc885543e.jpg

The bike it's on was custom built in '72 by Singer for Jerry Collier, who assembled it with lots of esoteric parts he'd collected over decades, so no telling when the post was made. '50s maybe? I hung out with Jerry a lot in the '70s (and drooled on this bike) but if I ever asked about the seatpost, I don't remember what he said.

I wouldn't be surprised if Daniel Rebour drew it BITD. Check Heiko Strömer's Rebour archive maybe?

Bike now belongs to Jerry's old friend Nelson Miller. See it here (Flickr) and then waste hours looking through all Nelson's other albums, it's a treasure trove.

How about a Rigi with the split seat tube?
https://d1mgeijqpfaspl.cloudfront.ne...12cb3460f.webp

Being primarily an old vintage English bike guy and second an old Schwinn lightweight fool, most of what I have is esoteric. That seems to be a defining criteria for my bikes and parts bins.

1975-ish Huret Success TITANIUM RD. The jubilee took the limelite but at 175g the titanium success model is the shiz of Huret RDs. It's not near as delicate as the jubilee.
https://cimg4.ibsrv.net/gimg/bikefor...41e4b82f00.jpg

At one time these were on all English bike nuts want list. A set of these today is very hard to put together. Mainly because not much of this stuff survived.
26" 597 ISO. 1-1/4" Dunlop Special lightweight stainless rims, SA Aluminum case AC 3spd hub, GB teapot wingnuts for SA hubs. Front hub is a Bayliss club special with aluminum flanges. One of these days I need to lace up the front wheel.
https://cimg1.ibsrv.net/gimg/bikefor...00b5145d2b.jpg


The only Schwinn lightweight head badge nobody has ever seen a bike for.
https://cimg0.ibsrv.net/gimg/bikefor...f7affe0019.jpg

Armstrong steel double fixed flip flop hub 1931. Has an equally rare Villiers 20t freewheel on one side.
https://cimg6.ibsrv.net/gimg/bikefor...87507345ee.jpg

I could go on but I can't unpack all my junk. I just put it all away last week.... 😄
​​​​

et voila!

https://fotos.rennrad-news.de/img/ph...arge/pbc.jpg?0

had them on my Vamoots. Bit soft for my liking, so they are retired now.

That is the Mavic Mektronic built from 1999 till 2003

The things in pics 1, 2, 3, 4, and 11 are called darumas. Really useful for attaching both fenders and racks in one eyelet.

Simplex Juy 543 derailleur on my Liberia https://cimg5.ibsrv.net/gimg/bikefor...85048fa94.jpeg

Legnano with the forward seat binder and rare Universal cable hanger.
https://cimg6.ibsrv.net/gimg/bikefor...15908019b.jpeg

For years the Brits forbid sanctioned road racing, so individual time trialing was what 'club' racers did. Many rode their bikes to the event, carrying their racing 'sprint' (tubular) racing wheels, swapping them in and stripping off bags and mudguards.

https://cimg2.ibsrv.net/gimg/bikefor...a320acb57f.png


But leave it to Cyclo for the solution in carrying those 'sprints'.

https://cimg4.ibsrv.net/gimg/bikefor...d7034d0de8.jpg
https://cimg5.ibsrv.net/gimg/bikefor...74f121dd9c.jpg
Cyclo aluminum sprint carriers

The first freehub
 

I stumbled across this while looking for a hub for a 1940's vintage bike. Bayliss Wiley created the first free hub in 1938. Once I knew about it, I needed to have one. It took me two NOS examples to create one fully functional hub. I knew each one has "issues". Much cheaper than a fully functional NOS example.

https://cimg2.ibsrv.net/gimg/bikefor...b574d964d.jpeg
https://cimg4.ibsrv.net/gimg/bikefor...a1a52cb81.jpeg

Cantilever cable quick release?

Yes, also for centerpulls. Made by CLB I think, but I'm not too sure so maybe someone here can correct that. I've only seen them on French bikes.

They work well, but the plating is crap so they rust pretty fast. Excellent for a bike that doesn't have a QR anywhere else. You know how some centerpulls or cantis, if they're adjusted tight it can be hard to disconnect the straddle to get the wheel out? Also this style could let you keep riding with a bent wheel or broken spoke.

Dia-Compe's version is nicer looking, alloy with better-plated steel hardware, but this one works just as well. Maybe better since I don't like straddle yokes that use a pulley, just inelegant design IMHO, dumb place for a pulley. Not that it hurts the function really, both designs work great.

https://cimg2.ibsrv.net/gimg/bikefor...a2f26d8196.jpg

one on Harley's bike @ 11:00 - Cooperative Wholesale Society - Bike Forums

there's also an earlier video when he just got the bike (posted a few months back) -
and here:

came across this while scanning the interweb:

https://www.gessato.com/wp-content/u...streets-22.jpg

love the blue shade, too

In the early days of CPSC rules, methods other than "lawyer lips" were used to comply. My daughter's 1987 Schwinn Sierra has this solution; I don't know if it had a name:

https://cimg7.ibsrv.net/gimg/bikefor...c5bdf3609f.jpg
Slips over pins on each side. Took me a few minutes to figure it out when I first got the bike.

Simplex RD. Moving lever forward shifts to lower gear. very smooth action, owner uses bike regularly


https://cimg5.ibsrv.net/gimg/bikefor...f8b1f01e1.jpeg

Self changing rear derailleur with freewheel crank set.
https://cimg5.ibsrv.net/gimg/bikefor...1ebbac1322.jpg
https://cimg7.ibsrv.net/gimg/bikefor...31dab3849a.jpg
https://cimg8.ibsrv.net/gimg/bikefor...645a9e3a17.jpg

https://cimg7.ibsrv.net/gimg/bikefor...f0e5f3e80.jpeg
Campagnolo appeal
https://cimg0.ibsrv.net/gimg/bikefor...d2315b5e3.jpeg

Anyone know much about this bad boy?

https://velobase.com/CompImages/FDer...CDFDFE248.jpeg

https://velobase.com/ViewComponent.a...m=113&AbsPos=4

I am running the MiXTE rims on my '75 Richard Sachs

Gian Robert RD. Reminds me of some other Italian brand but with very utilitarian construction. But it seems to work pretty well
https://cimg0.ibsrv.net/gimg/bikefor...96c76e806.jpeg

Sail bike?

https://www.gessato.com/wp-content/u...streets-10.jpg

https://www.gessato.com/revolton-bik...n-the-streets/

Ok, I'll bite: The object(s) in my experience that most align with that picture would be the corner of a sail, anchored with just a bit of tautness adjustability. Am I close?

Edit:I should refresh before posting.

I have a set of those on a bike. I've only used them with clinchers, so far. They're decent rims, but are hard-anodized, including the brake track. Braking performance suffers until the anodizing is worn through on the brake track.
https://cimg1.ibsrv.net/gimg/bikefor...590a9ced75.jpg

Love that front hub!! That is pretty wild!


https://cimg8.ibsrv.net/gimg/bikefor...648c8e99bd.jpg

and I wasn't planning on having any more kids anyway....

https://cimg9.ibsrv.net/gimg/bikefor...3c5a8de3e4.jpg

Am I correct in thinking this is purely an "art bike"?
i.e. no one is ever going to ride one?

Steve in Peoria

I thought she said was going to spin class but she came home with a spinnaker.

those Italian bikes are a great example of an over-engineered, "form over function" design. Having a sail in the middle of the frame will make it handle poorly in a crosswind, the cleat on the top tube adds needless weight and a serious crotch hazard, and I wouldn't trust wood handlebars not to splinter in a crash. The hubs are kind of cool visually but dunno why they went with a "bacon slicer" approach; again it just adds needless weight and wind resistance. Sure, these aren't intended as racing bikes but common sense should still apply. Especially for whatever insanely high price those bikes probably cost.