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-   -   Weird vintage tech thread. (https://www.bikeforums.net/classic-vintage/1242897-weird-vintage-tech-thread.html)

grant40 11-26-21 06:51 PM

Weird vintage tech thread.
 
Is there are so many weird designs in vintage frames and components that are even more interesting than modern stuff. I want to see what stuff is out there.

I will start.
These freewheels.
https://cimg9.ibsrv.net/gimg/bikefor...2c3b74a57c.jpg
https://cimg0.ibsrv.net/gimg/bikefor...c6c96d1ca9.jpg



Nylfor nylon headsets.
https://cimg0.ibsrv.net/gimg/bikefor...14821b522f.jpg



Huffy made a department store version of their Olympic bikes, complete with a plastic disk wheel.
https://cimg2.ibsrv.net/gimg/bikefor...834da3b7e4.jpg
https://cimg4.ibsrv.net/gimg/bikefor...278ed324df.jpg



This.
https://cimg6.ibsrv.net/gimg/bikefor...62f1b0efa0.jpg
https://cimg7.ibsrv.net/gimg/bikefor...cfe0aad262.jpg



This crankset.
https://cimg5.ibsrv.net/gimg/bikefor...803fb9fdae.jpg

randyjawa 11-26-21 07:37 PM

Pooey stinko!!!

https://cimg0.ibsrv.net/gimg/bikefor...f78673de57.jpg
https://cimg3.ibsrv.net/gimg/bikefor...c262387d40.jpg

ThermionicScott 11-26-21 08:16 PM


Originally Posted by grant40 (Post 22321274)
Is there are so many weird designs in vintage frames and components that are even more interesting than modern stuff. I want to see what stuff is out there.

I will start.
These freewheels.
https://cimg9.ibsrv.net/gimg/bikefor...2c3b74a57c.jpg
https://cimg0.ibsrv.net/gimg/bikefor...c6c96d1ca9.jpg

If anyone needs it spelled out, those freewheels were made and posted as an April Fool's joke years ago. :)

iab 11-26-21 08:24 PM

1930-ish - First gen Vittoria Margherita. Lever is for chain tension only. Push forward to loosen chain. While backpedaling, use hand/stick/foot to move chain side-to-side to change gears. Push lever forward to retention chain.

https://live.staticflickr.com/3789/9...19eb18b7_h.jpg_MG_9137 by iabisdb, on Flickr




1935-ish - Second gen Vittoria Margherita. Lever is for chain tension only. Push forward to loosen chain. While backpedaling, twist triangle on top of the lever to move flappers to move chain side-to-side to change gears. Push lever forward to retention chain.

https://live.staticflickr.com/6157/6...322322a1_h.jpgFrejus035 by iabisdb, on Flickr




1930-ish - Unknown brand, used by Learco Guerra. Use knob and lift up on seat tube to loosen chain tension by having hub assembly pivot down. While backpedaling, use hand/stick/foot to move chain side-to-side to change gears. Use knob and push down on seat tube to tighten chain tension by having hub assembly pivot up.

https://cimg5.ibsrv.net/gimg/bikefor...b2d9ed2920.jpg
https://cimg6.ibsrv.net/gimg/bikefor...3a4e977de9.jpg





1934 - Campagnolo cambio corsa - Twist top lever to loosen quick release. While backpedaling, twist lower lever to move chain side-to-side to change gears. Twist top lever to tighten quick release.

https://live.staticflickr.com/7605/1...2e356315_h.jpgPecorari 042 by iabisdb, on Flickr




1947 - OMAC cambio sport - Jockey wheel is on a spring-loaded linear-moving rod to keep chain tension. While pedaling forward, twist lever to move chain side-to-side to change gears. After much effort. I never got it to shift gears without getting off the bike to move the chain manually.

https://live.staticflickr.com/8396/8...53bc72ac_c.jpgCambio Sport by iabisdb, on Flickr

https://live.staticflickr.com/8526/8...86c6b209_h.jpg1948 Frejus 146 by iabisdb, on Flickr

steelbikeguy 11-26-21 08:37 PM

an article from the October 1975 issue of Bicycling magazine....

https://live.staticflickr.com/4185/3...9059f3_b_d.jpg


https://live.staticflickr.com/4192/3...825771_b_d.jpg

Steve in Peoria

steelbikeguy 11-26-21 08:52 PM

do solar powered bike computers count?

from the March 1985 issue of Bicycling magazine...

https://live.staticflickr.com/65535/...a4544d_b_d.jpg

or maybe this marvel of engineering optimism...

from the March 1982 issue of Bicycling...

https://live.staticflickr.com/65535/...29049a_b_d.jpg

Steve in Peoria

grant40 11-26-21 08:56 PM

I do remember seeing a picture of this bike in better condition on old10speedgallery a while back.

I did find this on Sheldon Brown's website though.
https://cimg3.ibsrv.net/gimg/bikefor...d641d419c4.jpg


There was also a square taper version as well.

steelbikeguy 11-26-21 09:08 PM


Originally Posted by grant40 (Post 22321383)
I do remember seeing a picture of this bike in better condition on old10speedgallery a while back.

I did find this on Sheldon Brown's website though.
https://cimg3.ibsrv.net/gimg/bikefor...d641d419c4.jpg


There was also a square taper version as well.

I have/had a flyer from Bullseye circa 1990's that still listed their severely elliptical chainring, along with their other interesting products.

https://live.staticflickr.com/7050/6...f9f458_b_d.jpg

This was about the time that I had bought one of their roller bearing bottom brackets. Very rugged, but used an oil bath instead of the typical grease. There was always a bit of oil getting past the axle seals, so oil drips were inevitable. For me, this was the kiss of death, and I installed a regular cup and cone bottom bracket again.

Steve in Peoria

grant40 11-26-21 09:10 PM

Osgear did both actions at once with one lever. It was also indexed.
https://cimg5.ibsrv.net/gimg/bikefor...a702b00683.jpg
https://cimg6.ibsrv.net/gimg/bikefor...2a0730f13f.jpg
https://cimg7.ibsrv.net/gimg/bikefor...a6eb634e5d.jpg
https://cimg8.ibsrv.net/gimg/bikefor...bfc8c41a1a.jpg


Here is one that someone put newer components on.
https://cimg0.ibsrv.net/gimg/bikefor...53db0e1ad5.jpg

iab 11-26-21 09:14 PM


Originally Posted by steelbikeguy (Post 22321377)
do solar powered bike computers count?

https://live.staticflickr.com/65535/...a4544d_b_d.jpg

I don't know about solar power, but that headband's ability to keep sweat out of the eyes in that position is truly amazing.

grant40 11-26-21 09:17 PM

https://cimg1.ibsrv.net/gimg/bikefor...bb64c14ed8.jpg
:wtf:

grant40 11-26-21 09:22 PM

:speedy::bike2::wtf::troll::crash:
https://cimg5.ibsrv.net/gimg/bikefor...77deae1f1b.jpg

canklecat 11-26-21 09:24 PM

How many teeth would you like on your single speed freewheel cog?

Yes.

I need a number.

96...

There's no such th

...in six identical cogs.

https://cimg4.ibsrv.net/gimg/bikefor...59683420e3.jpg

steelbikeguy 11-26-21 09:27 PM

Some of you know about the Cinelli Bivalent hub system. It was a scheme to keep the freewheel mounted to the frame, which then allowed the front and rear wheels to use the same hub. This supposedly had some benefit in terms of race wheel support or something. Or maybe less prone to bent axles? I'm really not sure.

A few photos from the Classic Rendezvous gatherings.....
Most of these are of Harvey Sachs's Cinelli.

https://live.staticflickr.com/7392/2...717ae0_c_d.jpg

https://live.staticflickr.com/7557/2...3a6832_c_d.jpg

https://live.staticflickr.com/7331/2...c5bff9_c_d.jpg

https://live.staticflickr.com/7689/2...a12d46_c_d.jpg

and an article by Jim Langley on the Cinelli Speciale Corsa...


https://cimg7.ibsrv.net/gimg/bikefor...a6038beacc.jpg
Steve in Peoria

grant40 11-26-21 09:29 PM


Originally Posted by canklecat (Post 22321409)
How many teeth would you like on your single speed freewheel cog?

Yes.

I need a number.

96...

There's no such th

...in six identical cogs.

https://cimg4.ibsrv.net/gimg/bikefor...59683420e3.jpg

combine with this.
https://cimg1.ibsrv.net/gimg/bikefor...9c5ed4434b.jpg

iab 11-26-21 09:33 PM


Originally Posted by steelbikeguy (Post 22321410)
Some of you know about the Cinelli Bivalent hub system. It was ...

It also was a knock-off of a system made by Palladini. Ad from 1947. I believe another Italian firm and a French company or two had something similar.

https://live.staticflickr.com/353/20...ca54566d_h.jpg1947 Ciclismo Italiano 32 by iabisdb, on Flickr

grant40 11-26-21 09:33 PM


Originally Posted by steelbikeguy (Post 22321410)
Some of you know about the Cinelli Bivalent hub system. It was a scheme to keep the freewheel mounted to the frame, which then allowed the front and rear wheels to use the same hub. This supposedly had some benefit in terms of race wheel support or something. Or maybe less prone to bent axles? I'm really not sure.

A few photos from the Classic Rendezvous gatherings.....
Most of these are of Harvey Sachs's Cinelli.

https://live.staticflickr.com/7392/2...717ae0_c_d.jpg

https://live.staticflickr.com/7557/2...3a6832_c_d.jpg

https://live.staticflickr.com/7331/2...c5bff9_c_d.jpg

https://live.staticflickr.com/7689/2...a12d46_c_d.jpg

and an article by Jim Langley on the Cinelli Speciale Corsa...


https://cimg7.ibsrv.net/gimg/bikefor...a6038beacc.jpg
Steve in Peoria

Here is another example.
https://cimg3.ibsrv.net/gimg/bikefor...ed38a42bb4.jpg
https://cimg4.ibsrv.net/gimg/bikefor...e11d43f3bf.jpg

grant40 11-26-21 09:33 PM

Not my drawing.
https://cimg8.ibsrv.net/gimg/bikefor...ba53f5923b.jpg

steelbikeguy 11-26-21 09:37 PM

An early drivetrain concept for the safety bike was the shaft drive. Not a weird idea, really, but just not practical for bikes. Most used bevel gears at the end of the drive shaft. One novel technology was the Victor Spinroller. Instead of bevel gear teeth sliding past each other, the friction was reduced by using rollers for gear teeth. Not sure how practical this was, considering the many small rotating parts. It couldn't have been too bad, because CeramicSpeed adapted the idea for use in a multi-speed shaft drive bike a year or two ago.
https://www.ceramicspeed.com/en/cycl...nounces-driven


https://cimg9.ibsrv.net/gimg/bikefor...c796e31b51.jpg

Steve in Peoria

thumpism 11-26-21 09:41 PM

Timex Velo-Trak wristwatch/cycle computer. I had one of these. First seen at the last (I think) Atlantic City Interbike show, it struck me as a terrific idea. Take that as proof of my status as a leading reverse indicator. I was later able to buy one for $20 at K-Mart when they were dumped. I think I used it once before it broke.
https://i.ebayimg.com/images/g/d~oAA...SK/s-l1600.jpg

steelbikeguy 11-26-21 09:43 PM


Originally Posted by grant40 (Post 22321418)

that's interesting... is the axle really as asymmetric as it appears in the photo? It looks like the left fork blade sits much further from the bike's centerline than the right fork blade. That suggests that the fork is only suitable for the Bivalent hubs, which really limits any future modifications.

Steve in Peoria

steelbikeguy 11-26-21 09:51 PM

and a handful of curiosities that Jim Langley wrote about a while back...


https://cimg8.ibsrv.net/gimg/bikefor...e771d7a2d9.jpg


https://cimg9.ibsrv.net/gimg/bikefor...e29de8f320.jpg


https://cimg7.ibsrv.net/gimg/bikefor...815102c799.jpg


https://cimg8.ibsrv.net/gimg/bikefor...7c319189b7.jpg

Steve in Peoria

ThermionicScott 11-26-21 09:57 PM


Originally Posted by iab (Post 22321417)
It also was a knock-off of a system made by Palladini. Ad from 1947. I believe another Italian firm and a French company or two had something similar.

Yep, Rene Herse used a hub called RAS in the 1946 Technical Trials, since points were awarded for not needing to touch the chain when changing a flat. I'm not sure if they developed it, or just used it.

Choke 11-26-21 10:14 PM

The Interdrive crank is one of my favorites.


https://cimg8.ibsrv.net/gimg/bikefor...88d0453c88.jpg

base2 11-27-21 12:54 AM

All these vintage shennanigans sort of don't make SRAMs electronic derailleurless double crankset with derailleur shifting seem sane, logical.

Sram crankset patent.


That being said the linked article contains this link about the Bellevue Washington based Browning Automatic Transmission. In looking adocumentation, it appears to be what the Rodriguez Disruptor is based on. R&E Cycles is Seattle based. The distance between these 2 motropolis' is about 10 miles...They've gotta be connected, somehow.

I guess it goes to show that some ideas are before their time.

randyjawa 11-27-21 01:33 AM

CCM managed to get it right at least once. This beautiful gold plated machine really blew my kilt up. I actually got in trouble just looking at it when stuck in the Calgary airport one day shortly after 911...
https://cimg5.ibsrv.net/gimg/bikefor...f1b75fdd85.jpg
https://cimg6.ibsrv.net/gimg/bikefor...9f11c5b2be.jpg

oneclick 11-27-21 03:26 AM


Originally Posted by steelbikeguy (Post 22321429)
It looks like the left fork blade sits much further from the bike's centerline than the right fork blade.
Steve in Peoria

To me it looks as though the wheel is dished.

oneclick 11-27-21 03:37 AM


Originally Posted by grant40 (Post 22321413)
combine with this.

<pic of crank with two same-size rings snipped>

There are at least two advantages to such a system (apart from the obvious one of shared and thus effectively reduced wear), though neither is much use to cyclists. With appropriate placing of the sprocket teeth one can achieve more uniform rotational speed and accuracy, and double- (and triple- etcetera) row chains can carry more power; not uncommonly used for this purpose on motor-cycles.

Schlafen 11-27-21 03:55 AM


Originally Posted by grant40 (Post 22321413)

May be just the angle but inner chainring looks bigger that the outer. 2 extra teeth?

gbi 11-27-21 09:33 AM

https://cimg4.ibsrv.net/gimg/bikefor...48737b2c04.jpg
"Thats my kinda bike!" - Quisp


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