The C&V esoteric component thread - 🔩
10-11-19, 12:25 AM
#101
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DD
10-11-19, 12:34 AM
#102
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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.
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● 1971 Grandis SL ● 1972 Lambert Grand Prix frankenbike ● 1972 Raleigh Super Course fixie ● 1973 Nishiki Semi-Pro ● 1979 Motobecane Grand Jubile ●1980 Apollo "Legnano" ● 1984 Peugeot Vagabond ● 1985 Shogun Prairie Breaker ● 1986 Merckx Super Corsa ● 1987 Schwinn Tempo ● 1988 Schwinn Voyageur ● 1989 Bottechia Team ADR replica ● 1990 Cannondale ST600 ● 1993 Technium RT600 ● 1996 Kona Lava Dome ●
10-11-19, 07:36 AM
#104
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@Wildwood The company is "Thun" (Germany/Ennepetal) and is still around. The "Coronado" was found on midrange sports bikes and, sometimes, inexpensive racers. It is quite notorious for being super-soft and to be very easy to bend.
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'.
Last edited by Wildwood; 10-11-19 at 07:40 AM.
10-11-19, 07:41 AM
#105
Strong Walker
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'.
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'.
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...
10-14-19, 12:46 PM
#107
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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
P1010340, on Flickr
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09-28-20, 02:37 PM
#109
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Looks like a Teuns Coronado-branded Ofmega Forgiato crank:
VeloBase.com - Component: Ofmega Forgiato (cotter-less)
VeloBase.com - Component: Ofmega Forgiato (cotter-less)
Last edited by JohnDThompson; 09-28-20 at 02:41 PM.
09-28-20, 04:44 PM
#110
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Flite carbon saddle:
DD
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09-28-20, 08:36 PM
#111
Senior Member
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.
But definite cool-factor points.
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09-28-20, 08:42 PM
#112
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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.
They worked pretty nicely as rear brakes, but were a lockup liability nightmare for the front.
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
P1010340, on Flickr
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09-28-20, 08:59 PM
#113
Senior Member
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.
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.
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09-28-20, 09:13 PM
#114
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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
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
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