1922 Vintage Sturmey Archer 3-speed CS gearbox casing with decent outer cover.
Brough, Norton and others
The number is CS72898L (I think). From the data that I have gathered, the number puts the gearbox around 1922. See this page: Sturmey Archer gearbox models and dating by numbers
These gearbox casings are usually damaged. The outer covers get damaged as the casing nuts work free. In this case, it all seems good. Bear in mind that the casings are over 100 years old. They have marks, so please study the images carefully. As you can see, the area around the gearbox stamped numbers has suffered from a little corrosion.
The outer cover is from a different CS gearbox as the number on the inside is 56800. So, that makes the outer cover from a year earlier. No matter really as they didn’t change the design.
The Sturmey Archer CS gearbox was usually used with flat tank Nortons. Known to have been used on Brough, Matchless, and others. The good thing about CS gearboxes is that they didn’t change much over the years. Consequently, a 1928 box ought to fit, and line up correctly, on a 1919 bike.
Viewing: Please come and check it over before you buy. It is at PE28, near St Ives in Cambridgeshire.
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Collection: If you don’t want it shipped, I have plenty of space. If you can’t collect for a while, it’s not a problem. However, I will need to be paid very soon after the sale. Thanks.
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