Austauschbarkeit von Schaltketten bei Sturmey-Archer Nabenschaltungen

In diesem Artikel werden Längen von Schaltketten für Sturmey-Archer Nabenschaltungen aufgelistet. Es besteht eine größere Austauschbarkeit als man zunächst annehmen würde. Obwohl eine kürzere Schaltkette schwieriger zu montieren und einzustellen ist, funktionieren sie solange die Kette bei vollständig entspanntem Zug nicht vollständig in der Nabe verschwindet. Eine längere Schaltkette funktioniert solange sie nicht vom Schaltzug seitwärts gebogen wird bei höchster Zugspannung. Bitte lies im Zusammenhang mit diesem Artikel hier auch den Artikel Techniktipps zu Sturmey-Archer Nabenschaltungen, in dem auch Montage- und Einstellanleitungen für Sturmey-Archer Schaltketten enthalten sind.

The table at the end of this article lists the various indicator spindles, along with the hubs with which they are meant to be used. A companion article describes how to determine the correct length of an indicator spindle by measuring hub parts. That can be useful if you can't identify the hub, or it is not on our list. We give indicator-spindle part numbers for some hubs from the 1930s and earlier, but for purts lists, you'll have to go to Tony Hadland's site or the Sturmey-Archer Heritage site.

Chapter 1 of Sutherland's Handbook of Coaster Brakes and Internally-Geared Hubs, on this site, gives more detail on indicator spindle lengths for hubs up through 1992.

And here is a table giving indicator-spindles for older and newer production of the S5/2 and AT5 hubs.

We still need measurements for a few spindles. Please feel free to send measurements in. We will credit you for your contribution.

Maße und Markierungen

Some spindles are thick, and are identified by through hash marks or Roman numerals. The effective length is from the base of the threads to the shoulder before the first link of chain (points of the green arrow in the image below).

Indicator spindle measurement

Spindles for most newer hubs are thinner, as shown in the image below. Some hubs accept only thin spindles. Each model of these newer spindles has a different-colored painted mark, which may be on the rod, or on the chain. Check the color of the mark under sunlight, because the blue and purple colors can easily be confused under indoor lighting. The red arrow in the image indicates the length from the base of the threads to the mark. No matter where the mark is, the length which most affects compatibility is from the base of the threads to the shoulder, indicated by the green arrow.

Thin indicator spindle

When using an indicator with paint marks on the chain, it is a good idea to make a mechanical markon the chain and/or to photograph the indicator: the paint is often obscured by dirt or simply falls off.

If you are using a spindle which is not standard for the hub, you will have to adjust it by testing operation of the gears, rather than by aligning the mark. That is a good idea anyway. Generally, the cable should be just short of taut in the tightest position. Exception: the S5 with bellcrank: the cable should be taut.

The hole in the end of the axle is large enough for a thick spindle, but there is an internal part with a smaller-diameter opening. The red arrow in the image below points to that part in a cross-sectional drawing of the axle. The part presses against a compression spring. The spring, in turn, pushes the clutch inwards against the outwards pull of the indicator spindle.

S-A sxle with Bissell spring pin.

Tabelle von Schaltkettenmaßen

Spindle lengths are rounded to the nearest millimeter. Thanks go to Jan Blaha, Dan Burkhart, Tony Hadland, Elton Pope-Lance, Howard Sutherland, eBay vendor cyclingcolors_france and David Prosser of Sturmey-Archer for some of these measurements. Special thanks go to Bruce Dance for his many suggestions and corrections.

Click on the link below to switch the order in the table between part number and spindle length. You may have to double-click the first time.

Siehe auch

Sturmey-Archer logo Official Site old Sturmey-Archer logo Heritage site Three-Speed Parts from Harris Cyclery English Three Speeds, Care and Feeding Internal-Gear Hubs Sturmey-Archer Hubs, General Information Sturmey-Archer 1902-1952 Sturmey-Archer 1935-38 Catalogues Evolution of the Raleigh Sports My old Robin Hood Sheldon's old Robin Hood Martin Hanczyc's roadster pages. Tony Hadland's Sturmey-Archer Pages including the 1956 master catalogue with rebuilding information for SWs and others. Sturmey-Archer documents at the Veteran Cycle Club Library. Hubstripping web site John Allen's spreadsheets of internal-hub gear ratios Retro Raleighs SW Hubs by Brian Hayes Jane Thomas's site with Sturmey-Archer service manuals. Menotomy Vintage Bicycles Chat forum on English bikes.

Quelle

Dieser Artikel basiert auf dem Artikel Sturmey-Archer Indicator Spindle Compatibility von der Website Sheldon Browns. Originalautor des Artikels ist Sheldon Brown.

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