Do you remember ... weird components and Bicycles.

[FluffyChicken]

I remember an adapter (around the time microdrive came out) that would allow you to use a cog as an inner chainring. I can't remember if the resulting set up was 4 or 3 chainring set up though.

Third post in this thread, the mountaintamer ?

or are you thinking of the microdaptor, but that's a different thing.



Though Buy one here ? (US) http://www.abundantadventures.com/quads.html

Go cheap here (UK) (company is on ebay) https://www.bankruptbikeparts.co.uk/qua ... bbp2212385

or why stop at 4, when 5 is better. (don't believe SRAM marketing!) https://www.renehersecycles.com/compass ... le-cranks/

 

[MT62]

Ooh the four chainrings! I used to have that on a road/city bike, added there by previous owner. If I remember correctly, my ones were made by Thun and had various rings between smething like 30-50 teeth.
Actually the bike had 4-speed freewheel in the back, that had about 14-20, so it wasn't really useful overall.

 

[madjh]

4 chainrings were a bit weird. But 5 chainrings ... that is too much for me, I have neer hear about that ...

 

[foxb13]

4 chainrings were a bit weird. But 5 chainrings ... that is too much for me, I have neer hear about that ...

This was posted on April 1st ;-)

 

[lensmansteve]

I converted an SR triple to four ring in about '92. I used a modified Sturmey Archer 21t sprocket and a driveplate and it worked well. I lived in a very hilly part of East Lancs then, and my 21x32 lowest gear let me pedal my trusty Mirage up the very worst of it. I could feel the chain stretching under the torque loadimg! One real plus of multiple rings is that the chain never has to run much off line, so the drivetrain feels better and lasts longer. The trend now is for 1x10 or whatever, not good engineering as far as I'm concerned, but saves weight and simplifies things I guess. I tried making a four ring modern Alivio chainset quite recently, sandwiching a Truvativ 28t between the 32 and 22 using long crankbolts and spacers. Worked fine, but I admit it probably wasn't worth the trouble as the gear range wasn't increased..

 

[madjh]

I don´t like the idea of 1x12 speed, the chain is too narrow, expensive and the casette is too expensive too. But I ride 10x1 speed in one, 10x2 in other and 10x3 in two more, I like 10 speed. But I think 3 chainring is quite good for any terrain (22-32-42) In 10x1 you don´t have a big chainring to go fast (it is 40x11 rear and 32 front)

What about the Syncroshift. I liked it back in the 90´s but the local shops didn´t sell it.

You have a grip shift and the system chooses when to switch the chainring front derailleur. I looks a bit bulky.

 

[velomaniac]

Re:

I've got one of those Thun quad chainset in my shed, I'll probably use it one day. It is 24,30,38,46 teeth.
Also remember a Dawes hybrid with that automated front shifting system. They had in a local junk shop, half a dozen of these bikes ex of Centre PARC's.
Then of course the automatic rear derailleur. I had to try one and my god it was awful, it always decided to change gear when you did not want it too. Instead of always being in the right gear you were always in the wrong one !

 

[66 triumph daytona]

Re:

Who remembers the Suntour/Browning B.E.A.S.T. electric shifting?
https://forums.mtbr.com/vintage-retro-c ... 17971.html

 

[madjh]

I have seen the browning electronic shift in a magazine, and I have read about the automatic change, but I have never seen.

The automatic change sounds rare, but I don´t remember much about it.

 

[madjh]

I dont remember this ... but it is automatic shift. Land Rider Autoshift

[youtube]https://www.youtube.com/watch?v=knMPK3TziPs[/youtube]