Concept-wise, it seems completely viable, otherwise Aeron chairs would not be so popular. If I had one of these, I be awfully temped to use it, unless it felt too soft right out of the box.

Like many things in the cycling world, "It's for selling".

Well no wonder I never found any info.

It is currently on a bike dedicated to 'light riding' days on a Frejus with the notoriously short top tube.
Almost went on an AD Vent Noir, for aesthetic reasons, but I decided a shiny Stronglight would be a better choice for that bike.
And with your input, it will not go on a black Holdsworth Special in the future.

If my nearly 70yo legs bend/break it - would be a first - I will report on the 'accomplishment'.

i had a quite harmless fall on a bike equipped with one of these (slipped at low speed on wet leafs) and went to see a bikeshop because pedalling felt awkward. I suspected i bent my nice Campagnolo pedal axle, but the mech just smiled and told me a Campa pedal doesn't bend, but the Coronados always do. He was right.

As for the quality, the spider is just pressed on and also has a reputation of coming lose. Not exactly a masterpiece of german engineering...

'Stepping' into the modern era, circa 1995 from Norway, we present a one way rotational pedal.

Although these are labeled Suntour, they are also labeled as Pederson Self Energizing System brake calipers. Pederson sold his design to Suntour after introducing them to the market. You don't see them around much but they work well on a tandem. As the pads engage the rim, the caliper moves forward on a screw to increase the pressure. Originally there were front brakes too but Suntour didn't want to deal with the liability of the brakes not releasing or locking the front wheel. They are a challenge to set up but once they are set up right, they do perform well.

P1010340, on Flickr

Reviving this thread in hopes of more additions. Love all the oddities!

Looks like a Teuns Coronado-branded Ofmega Forgiato crank:


VeloBase.com - Component: Ofmega Forgiato (cotter-less)

Flite carbon saddle:



DD

I rode one of those once, on about a 3mi commute home. For the first 3-4 blocks I was convinced it was the best saddle I had every ridden. Then it started to get weird, and my keyster and my brain started sending mixed messages back and forth. For the last mile I had to ride standing up because sitting on it any more was unbearable.

But definite cool-factor points.

IIRC it was a licensing deal, not a purchase. Pedersen got a percentage of sold units, can't remember if there was a disastrous minimum fee like with WTB products. They went into production at a time when Suntour spec market share was rapidly shrinking, so not many were sold.

They worked pretty nicely as rear brakes, but were a lockup liability nightmare for the front.

Gee, and there I was thinking I'd live the rest of my life in a happy place, without ever seeing another one of these again.

The amount of money and engineering-/production-hours thrown at the BEAST was incredible. The degree of precision necessary to get those shift gates to work properly, especially in an off-road environment, went way beyond expectations, and beyond Suntour's/Browning's ability to deliver product. Lots of angry customers, lots of cancelled orders with angry customers scrambling to find replacement cranks so production schedules wouldn't fall farther behind.

There was talk back then of being able to potentially harness all the hot new computer/electronic technology to make it an autoshifting system.

This is something I rescued at Suntour before it went into the dumpster. Both the thing itself and the company.....

I've never been able to figure out if was an internal design exercise, or a submission from an inventor, or what? Looks vaguely Bivalent-ish, but the end of the bushing that fits into the freewheel has an eccentic inner surface. And the qr/skewer thingie's handle kinda looks like somebody just squished some tubing in a vise. The splined section on the drive side of the hub looks homebuilt and pressfit.

Normally this thread would make me want to dig it out and play with it, but I can't remember where it might be hiding these days.

More pix here:
https://www.flickr.com/gp/26383479@N04/24v251

Is that intended to provide a shock absorbing spring effect?

Or admittedly cosmetic?

I have a Magura hydraulic caliper, but they are available new, so not really esoteric.

I miss PCB.

I know this is an old post, but I have the original Front Pedersen brakes on my 1985 Cannondale- when fronts still weren't considered "dangerous".
(Also, I've since been able to fix that upside-down knurled adjuster on the Odyssey Straddle rods).

Fender eyebolt screws, a wide variety of which were designed in Japan in the 1970s and 1980s.
Full resolution:
https://www.flickr.com/photos/414206...posted-public/

That is a magnificent collection of ... those thingies

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

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



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?

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.


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.



The only Schwinn lightweight head badge nobody has ever seen a bike for.


Armstrong steel double fixed flip flop hub 1931. Has an equally rare Villiers 20t freewheel on one side.


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