Advice on dismantling and rebuilding an old Sturmey-Archer AW 3-speed Hub

Discussion boards hosted by Cycling UK. Quick links. Usually stamped on the hubshell. The latest date I have seen so marked has been early which is when SA shut the plant in Nottingham. The exact style of marking on steel hubshells varied over the years but say ” means march and the style of marking was fairly consistent from the mid ’80s until Much older hubs had no ‘-‘ and the markings were different in other ways too. In the Taiwan-made hubs there is a different date code type which is an ink-jetted four-digit code.

Find identification 2

Template:Transmission types. Hub gears or internal-gear hubs are a type of gear system used on bicycles. Hub gears are used mostly on utility bikes and various types of small wheeled bicycle, such as folding bikes. Hub gears work by internal planetary or epicyclic gearing , which means that the outer case of the hub gear unit which is attached to the spokes is made to turn at a different speed relative to the rear wheel’s sprocket depending on which gear is selected.

In the United States and United Kingdom , hub gears are less common than derailleur gears which are the dominant gear system on most modern bicycles in these countries. In most of continental Europe, however, hub gear systems are more popular.

Sturmy Archer Classic 3-speed internal gear hub with gear ratio of %. 36 Spoke hole.

It is known in the art to provide three speed epicyclic gear hubs for bicycles by utilising planet gears engaged with a common gear ring and a sun gear fixed to the hub spindle. With this epicyclic system it is only possible to obtain direct drive plus one higher gear ratio and one lower gear ratio. It is also known in the art to provide five and seven speed epicyclic gear hubs for bicycles by utilising compound planet gears engaged with a common gear ring and each cooperable with a respective sun gear selectively engageable therewith in drive transmission mode.

The planet cages of the aforesaid arrangements are connectable with the hub shell, so as to provide a drive transmission from the planet cage to the hub shell according to hub condition, by means of radially or axially movable pawls mounted in the planet cage and cooperable with ratchet teeth provided in a hub end cap. The gear ring is connectable with the hub shell through radial pawls.

It is also known from EP 0 1 13 and EP 0 in the name of the applicants for a sun gear to be axially fixed with respect to the spindle and to provide a gear selector key movable axially of the spindle for selective engagement with a respective one of the sun gears so as to non- rotatably secure that sun gear to the spindle. It is also known from EP 0 A2 in the name of the applicants for a sun gear to be made non-rotatably secure to the hub spindle by using three balls disposed in respective holes in the hub spindle and a spool disposed for axial movement with respect to the spindle and operative, in one position, to displace the balls from a non-locking to a locking position in which the sun gear is non-rotatably locked with respect to the spindle.

With these sun gear locking means it is important that a sun gear is always locked to the spindle otherwise drive transmission will be lost. It is also important that only one sun gear is locked to the hub spindle at any one time, otherwise damage to the gear train could result. For this reason, the various sun gear selection means incorporate mechanisms for ensuring that at any time drive transmission is not lost or more than one sun pinion is locked to the spindle.

How to repair old Sturmey-Archer hubs

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The Sturmey Archer AW hub is 75 years old this year. To open up an AW hub (​and most other Sturmey Archer hub gears) remove the left-hand (non-drive side) locknut and For Sturmey- Archer 3 speed A.W. hubs and more uses. can anyone give me a date on a Sturmey Archer hub as its undated.

This is my oldest-numbered currently useable Special Sports frame, V My guess would be that the frame dates to around , based on some other Speedwell numbers I have seen. I carefully used some very fine steel wool, with oil, on the frame and fork, which removed most of the yellowed varnish and, like a restored old painting, the areas of white became clear again.

The process improved the colours, but I was extra careful around the decals on the forks and seat tube. Also, some paint schemes may look better with the varnish left as is. The main graphics are stencilled on with paint and are much more abrasion resistant than the decals. British Petroleum stickers in a couple of places, but they are now mostly worn away, and form part of its history!

The reality was much different, and since overhaul and re-building, it has not missed a shift and performs quite well, the shifts being slightly different to the AW, having a slower engagement and a slightly stronger spring tension. This was one of the last produced examples of the ill-fated SW c. The gear range is slightly wider than an AW, The saddle is a Bell model with double rails. The handle bars are not from a Speedwell, but do resemble the original upright bars of some Special Sports.

Pink Mixte which has not been ridden for a while and is now rebuilt, and sold to a young lady of 21 years….

How It Works: 3 Speed Sturmey Archer AW Bicycle Gears

About this item detail About this item. Item description detail Seller’s description. Sell one like this. Long-time member.

My Maclean Featherweight with a Sturmey-Archer FM hub came with an incorrect trigger. Introduced for 3 or 4 speed hubs.

ALL Henry Sturmey was also editor of a cycling magazine and so ,from the beginning, Sturmey-Archer always saw the benefit of advertising. Many of the advertisements are no longer politically correct but reflect thinking at that time. Motor cycles were a booming industry in the early part of the 20th century and various types of engines and gearboxes were then produced. There was even a production unit in Germany and later, engines were supplied for lawn-mowers and small tractors.

Here can be found general company information, sales catalogues, prices and bike pictures through the years, newspaper articles, production information and factory views.

A growing source of Sturmey Archer information

In stock now a whole range of Sturmey Archer hubs and hub spares. And even a 12 Volt 11w Compact Fluorescent. The Sturmey Archer FX hub was made in only, so nowadays its a rare hub. Cyclo Benelux Mark 7 changer dating from. Here are photographs of the Raleigh Sports English 3speed Bicycle.

: Sturmey Archer Mark I Indicator Chain 3 Speed: Bike Hubs: Sports Date First Available: September 1, ; Manufacturer: Sturmey-​Archer.

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Hub Date Marks – How Old Is Your Sturmey Archer Hub?

Sturmey-Archer was one of two major manufacturers of internal-gear hubs in the early and mid 20th century. Shimano has made internal-gear hubs since The Sturmey-Archer AW 3-speed hub, by far the most popular one, was durable and, easy to maintain and rebuild. Quality issues also began to creep in.

Has an Archer 3 gear hub, which does thankfully work.:smile: I can confirm that there is no date on the Sturmey Archer 3 speed hub. There is.

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Sturmey Archer

From Wikipedia the free encyclopedia. A hub gear , [2] internal-gear hub , [1] , internally geared hub [3] or just gear hub [4] is a gear ratio changing system commonly used on bicycles that is implemented with planetary or epicyclic gears. The gears and lubricants are sealed within the shell of the hub gear, in contrast with derailleur gears where the gears and mechanism are exposed to the elements. Changing the gear ratio was traditionally accomplished by a shift lever connected to the hub with a Bowden cable , and twist-grip style shifters have become common.

Hub gear systems generally have a long and largely maintenance-free life though some are not suitable for high-stress use in competitions or hilly, off-road conditions.

For more than years, Sturmey-Archer has been a pioneer in the design of internal gear hubs, hub brakes and dynamo lighting. Sturmey-Archer makes.

Sturmey’s ever popular robust 3-speed AW Hub. The 4-speed FW Hub as favoured by Dr. Moulton in the ’60’s. From a very greasy page in the manual the AG 3-speed hub and Dynohub. Some consider these superior to S-A hubs although they are based on an early Sturmey design. For the more up to date among us, a new section on the S3C Tricoaster 3-speed hub and coaster brake.

The nice man at Sturmey Archer has sent me bags of new stuff.

Chamois Butt’r Original 8oz Tube

Sturmey-Archer is a manufacturing company originally from Nottingham , England. It primarily produces bicycle hub gears , brakes and a great many other sundry bicycle components, most prominently during their heyday as a subsidiary of the Raleigh Bicycle Company. In the past, it also manufactured motorcycle hubs, gearboxes and engines. All Sturmey-Archer gear hubs use epicyclic planetary geartrains of varying complexity. The AW is the simplest, using one set of planetary gears with four planets.

just bought a rusty 3 speed bike, and I don’t need another bike! Re Sturmey Archer date marks: since production resumed in ~ in Taiwan.

Thanks for this post, it is so clearly documented and photographed I’m inspired to start stripping one of my hubs! One question though, as the hub that most needs some attention is a Dynohub, I was wondering if you had any experience you could share relating to the risk of demagnetising the hub? Now how do we turn an AW3 into a 3SX? Having seen both of these hubs up close, it seems almost certain that the innards of the dynamo mechanism are identical, with the AWG also squeezing in a 3 speed gear mechanism too.

The instructions suggest that the dynamo mechanism can be removed as a single piece without demagnetisation being an issue. After that, the rest should be the same as the AW. Ian,I think this’ll be a slow burner, few will read this on the off chance they may want to service a hub in the future, but Google may lead them to it in the future if their hub is in need of some attention.

Great job, Chris — I found your photos really useful in my first attempt at fixing a broken AW. One note to other novice mechanics like me: when you’re putting the guts back into the hub shell, it’s probably best to hold the hub horizontally i. BG,You are correct, the low gear pawl pins don’t always fall out if they have a bit of grim holding them in place, but on a cleaner hub they would’ve fallen out if held in the same manner as I did in the pictures. Anonymous,I hope it went well.

How To Overhaul/Clean/Lube Sturmey-Archer 3 Speed Hub – AW type