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talk about "off the wall" concept bike(22 posts)

talk about "off the wall" concept bikeSpirito
Jun 6, 2002 12:59 AM
unusual colnago with a nice tough of old ernesto matching his blazer with the suede regal saddle and bartape - italians they know these things....

can someone explain the odd mix of funny looking parts

- stick shift downtube shifter with a fixed cog rear?

- whats happening on the other side of the chainwheel?

- what are those brake levers about?

- how does the rear brake work? the cable seem to go near the end of the caliper arm..

- was this bike ever ridden?
i think woof mentioned these a little while back...Spirito
Jun 6, 2002 1:08 AM
prologo 1989
re: talk about "off the wall" concept bikeohmk1
Jun 6, 2002 4:50 AM
This was supposed to be a time trial specific machine, mostly for a very flat stage, where many gear changes were not needed. Hence no derailleurs.
se explain the thing on the downtube? NmSpirito
Jun 6, 2002 10:29 AM
Is that an integratedcyclinseth
Jun 6, 2002 5:28 AM
headset? I thought that this design came out with in the past 2 years.
Vitus had integrated headsets in the early 90'sdzrider
Jun 6, 2002 6:06 AM
I believe the mechanism on the Colnago down tube is the spout for an integrated espresso maker.
re: ... how 'bout...Akirasho
Jun 6, 2002 6:17 AM
re: ... or...Akirasho
Jun 6, 2002 6:20 AM
No brakes or pedals on that thing huh?!?!?! NMtronracer
Jun 6, 2002 7:27 AM
Of course not...Andy M-S
Jun 6, 2002 8:08 AM
...it's a boneshaker!
that looks scary (nm)laffeaux
Jun 6, 2002 10:16 AM
can you wear a red striped tie with a tan checked suit? nmmr_spin
Jun 6, 2002 6:51 AM
You could in 1988 (nm)TJeanloz
Jun 6, 2002 7:02 AM
it all seems somewhat explainable except downtube stickshift nmishmael
Jun 6, 2002 7:05 AM
Just looking at the pictureSpoke Wrench
Jun 6, 2002 7:18 AM
I would suspect hydraulic brakes and maybe some kind of planatery drive built into the crank.
thats what i suspected and am intrigued aboutSpirito
Jun 6, 2002 10:32 AM
but how?

given that the chain length is fixed......

ciao
I've seen a set of cranks on recumbantcyclopathic
Jun 9, 2002 8:09 PM
which had planetary gears built in (only 2 speeds). Similar to internal geared hubs aka Rohloff, Shimano or SRAM for cruisers. Brakes are hydrolic, Magura still makes hydrolic rim brakes (good for tandem or touring bike)
Aero Ernestoelviento
Jun 6, 2002 8:09 AM
The thing on the downtube is probably an aero fairing for the water bottle, which isn't in the photo obviously.
The brake levers probably have aero fairings as well.
internal front gearing, hydraulic rim brakesoff roadie
Jun 6, 2002 8:39 AM
Sheesh, how simple can it get? ;-)

The brakes are a commercial item from Magura. The road version is rare (in America, at least), but the mountain bike version is actually quite popular for trials riding. I love mine- they give the power of disc brakes without the hassles.

I'm betting the front chainring works similar to the systems shown at http://www.sheldonbrown.com/harris/schlumpf.html but has more gear options, requiring a finger controlled shifter.
Those brakes don't look like Maguras.Spoke Wrench
Jun 6, 2002 8:51 AM
The levers don't look like Magura levers and I wasn't aware that Magura made a caliper-style brake. I have seen Magura road brakes, but they were all canty-style.

By the way, I've got Magura rim brakes on my mountain bike and I agree with you that they've got perfect modulation. Whatever you feel at the lever is what's happening at the rim.
your right, not (current, stock) Magura'soff roadie
Jun 6, 2002 12:03 PM
I just meant that hydraulic rim brakes in general had reached the market, and were available from Magura. I looked at the Magura site, and there road brakes are much like the mountain brakes, only with diffrent levers. They still require canti mounts, which lots of road bikes don't have.

Did Magura even have the rim brakes out yet back in '88?

Bummer Magura doesn't have a center-mount adaptor. You'd think a special arch shaped clamp could hold both pads, and maybe cover up the connecting hose, for better aerodymics and less weight. I bet it would work pretty sweet, not even requiring a seperate booster to get full power! It looks like that's what the Cologno has, with smaller pistons at the wheel end to boot. Nice. The levers are kinda clunky, but maybe they are self adjusting (require a resevoir, I think) or something like that.

Themn again, do you really need to be able to pull "stoppies" on a road bike?
so like a high-tech sturmey archer - but up front? nmSpirito
Jun 6, 2002 10:34 AM