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Dating suntour components


The Dating suntour components of manufacture of a bicycle's components can often be used to determine the date of manufacture of the bike itself.

Some bike parts have a date code cast or stamped into the piece. This clearly is when Dating suntour components component was made and not when the bike was made, but unless the component or bike manufacturer had lots of stock lying around in inventory, Dating suntour components date should be a fairly good indication of the year of the bike.

At least it would be the earliest date that the bike could have been made.

Bruce Dance on the Winner...

Of course, all this assumes the bike has the original component. The most likely components to be original are the stem, handlebars, seatpost, and brakes. On a vintage bike in excellent condition that apparently had Dating suntour components lonely existence in a garage all of the components likely are original.

The manufacturer's date on a...

As the wear on a vintage bike increases, the greater the likelihood components are not original, either through replacement of worn parts or through component swaps.

Swaps can take place early in the life Dating suntour components a bike as the proud new owner upgrades to new or used components of higher quality. Swaps also can be made as the bike falls out of favor, Dating suntour components is being sold, where the higher quality components are traded for lower quality ones that the owner had onhand. Dating suntour components all cyclists have boxes and boxes of old components in their garage?

Most early Treks through about were sold as framesets. The components were added by the local Dating suntour components shop or by the buyer.

New components often were used. Components also could be swapped from an existing ride Dating suntour components the new frameset.

Suntour may have started producing...

This makes dating the components an interesting archeological investigation, but one not necessarily Dating suntour components to the date of the bike. A date code is marked on most or all SR seatposts.

Trek owner Larry Osborn made this observation, and suggested this as a supplementary way of dating Dating suntour components Trek and other bikes as well. Fueled by this first realization, and with the help of other bike folks, Larry and I have sorted out other codes a project still ongoing. Especially useful, and challenging Dating suntour components Dating suntour components out and verify, was the Shimano code.

Also gathered on this page are date codes decoded and generously provided by others. For Treks, the Dating suntour components date markings are especially important. Dating Dating suntour components components all of the Treks not equipped with Campagnolo or Shimano Dura-Ace components, started life with some Dating suntour components of SR seatpost and may also have SR stems, bars or cranks.

Even those equipped with Suntour Superbe components usually had Dating suntour components seatposts. Many components are marked with size descriptors in addition to component Dating suntour components date codes.

For example, the back of cranks are usually marked with crank arm length in mm, typically in the range of to Seatposts are marked with outside diameter, also in mm.

For old Treks, Derailleur Dates in "The Dancing Chain". The rear derailleur can often be dated to a year or two by referring to the book "The Dancing Chain - History Dating suntour components Development of the Derailleur Dating suntour components, by Frank Berto, 3rd edition The Appendix Dating suntour components dates Dating suntour components initial manufacture for the vast majority of derailleurs made from to Dating suntour components This component dating discussion is a work in progress.

If you have confirmation of Dating suntour components date codes, or corrections or additions to the codes, please contact me. Other manufacturers Dating suntour components bicycle components have date marks on their pieces.

Unfortunately, many of these are coded, Dating suntour components require some additional knowledge to understand the code. If you know of other components that are marked or coded that can be added to this list, please let me know. The information on this page is copyrighted. Feel free to quote small parts of the information on this page, but copyright law requires Vintage-Trek. In this website, we credit the people involved in the understanding of these codes.

Their work must not be stolen. Naturally, for information provided by others, such as for the Campagnolo and Williams codes, the original Dating suntour components should be cited. The dating of Campy components hub Dating suntour components nuts, rear derailleurs, and cranks is described at the bottom of Chuck Schmidt's excellent Campagnolo timeline: Weinmann and Dia-Compe calipers usually have codes on the back of a caliper arm.

This can be simple like "" month 07, or a clock-type, with year in the middle and a ring of numbers with a tickmark pointing to the month. Pull the lever and look inside the top of the lever arm for a code such as " I have a set of Dia-Compe mountain levers where if you pull the lever all the way, a piece of the lever is exposed, which has a clock-type date code. Dia-Compe cantilever brakes don't appear to have a date code, Dating suntour components supposedly the, brakes were Dating suntour components introduced in, Dating suntour components, etc.

Following Ben's lead Dating suntour components Dating suntour components checked three sets of Dia-Compe Dating suntour components calipers and all have the Dating suntour components date code Dating suntour components the back of one of the arms. The two Dating suntour components of Dia-Compe brake lever bodies I checked had the four-number date code stamped inside the lever body I couldn't find any markings on the levers themselves.

However, a Gran Compe set Dating suntour components calipers had no markings. Huret front and rear derailleurs often have a four-digit date code.

The first two digits are Dating suntour components week of the year. The last two digits indicate the year. For example, means the 11th Dating suntour components of the year Preliminary data indicate this code began in the late seventies and extended at least through the late eighties. The latter part of this period was for Sachs-Huret derailleurs, after the purchase of Huret by Sachs. Maillard Hubs and Pedals. Maillard used an open dating system for their hubs and pedals.

It is of the form NN NN. The first pair of numbers is the numerical week of Dating suntour components year, 01 to Thanks to Erik Frey for providing this information. The second two numbers are the year of manufacture e. We are trying to sort out the manufacturer's date code on Nitto handlebars and stems. If you have Nitto bars for which you know the year, please send me skip skipechert.

Better yet - if Dating suntour components know the meaning of the letter code, please let me know. There are date codes on some Nitto stems. If you have a stem with a code, and know the year of the bike on which it came or the date it was bought, please Dating suntour components suntour components me know.

Our thanks to all who submitted codes. Normandy used a date code system similar to the one used by Maillard. The number pairs are spaced about 10mm apart. One hub was marked in a slightly different format: However, the meaning of the digits appears to be the same as above.

These derailleurs do not have...

This code was used on hubs that were stamped incised with information on their barrels. It includes the "Schwinn Dating suntour components Normandy hubs.

The code was used on hubs in the 70s and early 80s, but may have extended beyond this range. The Normandy Dating suntour components Competition hubs we have seen have no stamped information, but were marked with gold or red stickers on their barrels.

Unfortunately, these hubs Dating suntour components have no date codes.

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Dating suntour components thanks to Marty Walsh Dating suntour components pointing out the date code on Normandy hubs. Below the insertion mark Dating suntour components SR seatposts and Sakae posts is a stamped mark, such as F The number is the year of manufacture and the letter appears to be the month of manufacture.

In the example, the "F" indicates the sixth month, or Dating suntour components. Steve Mann reports a mid 70s SR seatpost which is marked with a date code of the form Most SR right crank arms also have an open date marking, either stamped or cast into the arm.

Suntour may have started producing...

Dating suntour components The date is on the back side of the arm near the spider of the crank, typically of the Dating suntour components of the two-digit year above a Dating suntour components, apparently representing the month.

Dating suntour components SR Custom crankset, reported by Alan Burnett, has the back of one arm marked only with a 1 and the other arm with a 2. This crankset came on a Trek Alan suggested, like for Campy crankarms, these are the last digit in the year; i. SR stems usually are marked with the same date Dating suntour components. It appears near the insertion mark.

An exception is the SR Royal stem, most - or all of which, have no code. SR handlebars have the date code stamped near one of the ends of the bar. Rodney Dickinson has identified two other forms of SR date codes. I recently learned of the Japanese Showa calendar, which might provide the answer. For example, Showa year 49 washence would be Dating suntour components. Showa year 48, stamp would be February. These could be the in-between years Dating suntour components transition between the Showa and Western calendar.

Some, if Dating suntour components all, Sachs-Huret derailleurs have an open dating system stamped on the back of the derailleur. Kirt Murray Dating suntour components a date code on the back of his Sachs-Huret Rival rear derailleur mounted on an Trek.

The last two digits represent the year of manufacture, in this case

SunTour reached a zenith of sales and commercial win from the late s to the mids. Begun in as Maeda Iron Works Institution manufacturing freewheels and sprockets , the company concentrated on producing bicycle gearing components. In the s, the turnout began producing its rendering of pull-chain, rod-guided, touring derailleurs Matchless, similar to those of French derailleur companies such as Huret and Simplex.

In Cultivated, Suntour invented the slant-parallelogram rear derailleur. The parallelogram rear derailleur had gained prominence after Campagnolo 's introduction of the "Gran Sport" in , [4] [5] and the slant-parallelogram was an improvement of it that allowed the derailleur to maintain a more perpetual distance from the sprockets, resulting in easier shifting.

A fashionable Consumer Reports test reported that "SunTour was here and away the easiest to hours and the most unarguable of arriving at the right sprocket. Suntour's slant-parallelogram, spring-loaded crest pivot babytalk derailleur provided the best clothes shifting on the store.

Can a guy make sense of this? Suntour may have started producing bicycle components in , but it wasn't until that they decided to start using date codes to indicate the year in which . SunTour (Maeda) was the most important Japanese manufacturer of bicycle components based in Osaka until , when Sakae Ringyo Company..

The date of manufacture of a bicycle's components can often be used to determine the date of manufacture of the bike itself. Some bike parts have a date code cast or stamped into the piece. This clearly is when the component was made and not when the bike was made, but unless the component or bike manufacturer had lots of stock lying around in inventory, the date should be a fairly good indication of the year of the bike.

At least it would be the earliest date that the bike could have been made. Of course, all this assumes the bike has the original component. The most likely components to be original are the stem, handlebars, seatpost, and brakes. On a vintage bike in excellent condition that apparently had a lonely existence in a garage all of the components likely are original.


Dating Suntour (Maeda) Components.

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Dating suntour components SunTour derailleurs have a two-letter date code. On rear derailleurs the...

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The codes appear on the inside face of each crank arm. Bruce Dance offers the following observations: Read the web catalogue to see all improvements for ! In other projects Wikimedia Commons. Superbe Pro sealed hubs were of course excellent. Further market share was lost to Shimano. On rear derailleurs the code is stamped on the back side of the inner parallel arm.

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Components can, and will, offer unexacting to find accurate and all wet vintage determining clues, and our Benotto example is no departure to the rule. This suggests that there is at least one inherent danger, when relying on components to determine a bicycle's vintage. Components are extraordinarily easy to change out, either individually or as complete organizations.

With that in mind, in unison must not only be gifted of understanding a component's numbers, but whether they belong or not. And there might be clues to help determine square that. Trusting the information of a single component, when determining a bicycle's vintage, is not a good idea. A special component might be of the same model but of pure different vintages.

  • Bicycle Mechanics Broken bottom bracket?
  • Dating Suntour (Maeda) Components. | Velo Apocalypse
  • [Bruce Dance reports: All SunTour freewheels are date-coded using the . Also see the , and Sun Tour component listings, which are online. Join Date: Jul Posts: Mentioned: 0 Post(s). Tagged: 0 Thread(s). Quoted: 2 Post(s). SunTour components are fine good long lasting.
  • Components can, and will, offer easy to find accurate and inaccurate vintage . By comparing the Benotto's Suntour front derailleur, we see the date code to.
  • We find ourselves back in Williams Lake, BC for the second installment of this
Dating suntour components


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