- John B. / Mon, 19 Oct 2015 13:04:02 +0200
> I was interested in the number of rear sprockets as the bike has a
> chain guard and it seems to be the common opinion here that bicycles
> with a number of sprockets on the rear CANNOT have a chain guard....
> and there is a bicycle that has one :-)
<
http://www.scheunenfun.de/f+s_torpedo_kettenschaltung.htm>
On this link, there is a very old 3-gear chain shift.
You also can see the winged axle nuts.
Of course, on the picture it is hard to identify the brand
(»Torpedo« was a brand by Fichtel & Sachs, a company that
stopped building bike parts when Shimano came with cheap
but reliable products; their patents were bought by SRAM).
As parts like the headlight, the rear rack, the chain guard,
the break arms, and the fenders look like early 1970s style,
the shift will probably be 5-gear (was common at that time).
Most non-racing bikes of that time had 3-gear hub-shifts;
chain-shift was the more 'sporty' variant.
<
http://www.scheunenfun.de/f+s_modell515.htm>
The combination of sprocket shift and chain guard is possible,
even today it can be found on bikes from the Netherlands.
People preferred to have the chain easy to access (because
early chain shifts were less reliable than today's), and they
didn't like the »grandpa-style« chain protectors. So they
came out of use (of course, never would be screwed on a racer
or a MTB)
> I didn't mean the green bicycle lock chains and cable ...
Sorry, I was detracted by the thing mounted right under the seat
(might be a trailer hitch?).
> ... I was talking
> about the two decals on the seat tube. the one at the top I can almost
> read and the red one at the bottom I can't read at all.
The silver writing of the upper one reads »Garantie« / warranty -
kind of a quality badge.
The lower red one probably contains the frame number.
The letters on top of the red badge might be »Eiche«.
> I suspect that
> the top one might be a label for the steel tubes used, in which case
> it is likely, at least for the time, a very well made frame.
It was common to say something like »high quality steel«, not the
exact type used (I don't know when numbers like »EN 10305-1«
or »EN 10305-4« were introduced).
But it is hand-made with big precision for sure. Bikes were quite
expensive at that time. The invasion of DIY-market crap bikes
(which looked somehow more modern) came up in the 1980s.
Many bike manufacturers closed down then.
jk
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