Thread: rim notation
View Single Post
  #9  
Old March 11th 18, 05:13 PM posted to rec.bicycles.tech
AMuzi
external usenet poster
 
Posts: 13,447
Default rim notation

On 3/11/2018 12:30 AM, Emanuel Berg wrote:
18 Z 1/2"


The Torpedo sprockets come in different
flavors. The 3SP (Triplex/Dreigang) I have are
19T, the Duomatic is 20T.

The letter "Z" is the German "Zahn" for
"tooth", plain and simple.

The Duomatic has a sprocket, or a

Zahnkranz 1/2 x 1/8" aufsteckbar

"aufsteckbar" is "attachable" so the inches
probably refers to something that has to do
with that.

It also says

(s. Liste Nr. 196.6/8)

anyone has that one lying around?


Oh dear lord. Really?

3-spline sprockets are cheap and ubiquitous. They're 'quick
change' in that the previous versions (mostly prewar) were
all screw-on track sprockets. Standard format fits Sturmey,
Shimano, SRAM-Sachs-F&S-Torpedo, Bendix, Durex, Centrix, and
so on right down to $5 chinese child's coaster hubs. You can
mix-n-match across brands and tooth count, change your
gearing every morning if you like, sizes range 13t to 24t.

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971


Ads
 

Home - Home - Home - Home - Home