Metal Crud in Bike Brake Pads

One bike mystery for me is where these little bits of metal come from that regularly get embedded in my brake pads (see above) and cause an unpleasant noise when braking, not to mention less braking action and more rim wear. Are some of these metal flakes from the rim itself? It seems likely, somehow, but also puzzling and troubling - why would that happen?

The above pads are only the second set I have installed on this bike - they are stock Shimano DuraAce/Ultegra pads. (The first set lasted around 4,000 miles - I don't ride in the rain on this bike.) Many folks recommend Kool Stop brake pads rather than Shimano - one forum entry even specified that Kool Stop would reduce this metal-flakes-in-brake-pads problem! So I guess my next set of brake pads will be some of these.

The pocket knife is the device I use for removing the small bits of metal. It may be the easiest bike maintenance task there is, but I don't much care for it.

Studded Snow Tires for Bikes

On Thursday (January 6) the weather folks predicted snow possible overnight, continuing into the morning. I decided to wait and see before making a choice of bike to ride - "bad weather" or "good weather" bike.

Friday morning, I looked out - no snow, and I could see stars. Didn't look much like snow. The Washington Post site, however, said "light snow falling in Washington." I decided to ignore and ride in the good bike - the chance of show at that moment was like 20 percent according to weather.com and zero in the afternoon.

On the way in from Arlington to Washington I passed exactly one bike - I guess the weather forcast had put off some people, although Friday's have fewer commuters generally (since a lot of people telework or have compressed work schedules). I could hear the guy's tires as I came up on him from behind - he had studded bike tires! Well, that seemed like overkill to me, since we hadn't even seen a flake.



I have a set of mountain bike studded snow tires but I haven't used them much in recent years - in my view, they aren't terribly useful here. I don't think the studs help one go through snow, they only contribute to staying upright on icy surfaces. There just hasn't been enough ice to get me interested in switching my approach from riding a cyclocross bike with 25 mm tires with the inflation dropped to ~50 pounds (the alternative being an old hardtail mountain bike with the much much wider studded tires).

The studded mountain tires I have are Kendas, by the way, but not the model available now, it seems, the "Klondike." As I recall, I only paid like 25 bucks each for them about five years ago from Nashbar. Thought it was a pretty good purchase at the time. . .

The Early "Coaster Brake" (1900)

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The full page of the 1900 Columbia Bicycle catalog is here.

COASTER BRAKE — This device enables the rider to stop pedaling on down grades, or at any time when a sufficient degree of speed has been attained, the wheel continuing to coast along while the feet are held stationary on the pedals at any convenient position. We have experimented for many months with coaster brakes of various types and designs, and now have the pleasure of announcing that we shall be able to supply a coaster brake which has stood the most exacting tests of hard usage on rough roads and which we know to combine effective operation with great durability. The clutch in the rear hub is simple, positive in action and designed to avoid all wedging of the parts and all hurtful shocks in their engagement. The brake is of the outside type, acting upon the rear tire.

A slight backward motion of the pedal from any position throws back the oscillator seen in the cut and draws the brake spoon against the tire with a force easily graduated and controlled according to the needs of the situation. Upon relieving the backward pressure, the wheel coasts on with entire freedom, or the forward pedaling may be resumed. All of the apparatus except the brake spoon and its connecting rod is contained in the rear hub. It will be furnished to order on any Columbia bicycle for 1900. Price, $5.00.

So, unlike a modern coaster brake, the braking action comes from an external "spoon" that is actuated by a rod that runs from the rear hub to the front of the rear tire. The major advantage here is that the bike coasts when you stop pedaling, such as descending a hill. Previously bikes had "direct drive" and when you stopped pedaling, you didn't coast, you stopped! (Like a modern fixed-gear bike.) But if a typical fixed-gear bike set-up is converted to being able to coast, there is no ability to stop! So a brake was suddenly essential.

A similar "spoon" type brake was also an additional option for the front tire, actuated by a hand lever.

The Model Year Conundrum - 1896 and Today

With the new year, one is reminded of the "model year" aspect of bike sales, which isn't (as it turns out) a new thing.

From the September 17, 1896 issue of Cycling Life

DISPOSAL OF SURPLUS STOCK.
Probably the bicycle trade has now outgrown the necessity for a sharp distinction between models of one year and models of the following year. As a stimulant for new business this distinction has played its part, and a considerable part, in creating and holding the public interest in mechanical improvements and in [bicycle] shows.

Perhaps more a plea from the retail sellers' point of view, it would seem, than anything else. Already in September they state that ~

The large surplus of finished and half finished stock which remains on the hands of our manufacturers labeled with the numeral of 1896 brings the question of the best disposal of the same to the forefront and with it the question of price and production for 1897.

My own "good" (carbon fiber with Ultegra components - shown above) bicycle is a "2006 Scattante CFR" (carbon fiber race) that I bought on a "year end clearance sale" in February of 2007 at what seemed like a good price. While there were some (very slight) changes in the design of the 2007 models, I was really more interested in the Ultegra components that were unchanged (since 2005, I believe). I do confess to some level of awareness that my now (apparently) four year old style of road bike is woefully out of keeping with present road bike designs but these days I'm looking more back, at older steel frame designs, than forward.

The Cycling Life writer was vexed by the model year situation ~

To accentuate a new year's model as such, so as to rouse the public's curiosity by loud emphasis on the recent date of its design, was among the adequate means for booming the entire cycle industry in its infancy; it was a resource open to all makers alike and of no more benefit to one than another. . . . . . In order to arrive upon a safe and sound basis for the bicycle industry it seems necessary to surrender all fealty to this idea of a fashion-plate regularity in changes . . . . .

I suspect however that the writer was giving far more credit to the introduction of new models with new features in stimulating demand than was accurate - the bicycle boom of the 1890s was driven by a certain segment of society deciding that they wanted bicycles - and could also afford to buy them. The real problem in 1896-97 was that this market was becoming saturated. Unless the prices dropped considerably many who wanted to own a bicycle, or at least a new one, were probably unable to act on this desire. (The issue of the used bicycle market in those days is a topic for another day.)

As an aside, I am once again amused by the prose style of Cycling Life.

Would You Like a Revolver? Or a Bike? (1896 ad)

At least it gives some context for the prices of bicycles at the time . . .



From the September 17, 1896 issue of Cycling Life.

This ad is a bit puzzling - the magazine Cycling Life was intended for "the bicycle trade" and not bicycle consumers, so the marketing strategy of telling (reminding?) this audience that the very same Iver Johnson that made quality bikes would sell them a reasonably priced high-quality revolver is not clear 100-plus years later.

If nothing else, this gives some sense of the relatively high cost of a bicycle in those days - Iver Johnson bicycles were many times more expensive than a revolver.

The price of the Iver Johnson bicycle for men and women in standard finish for 1897 will be $100; the price of the Fitchburg bicycle for men and women in standard finish will be $75.

Fitchburg was the name of the town where the Iver Johnson factory was and was used as the brand name for the lower cost cycles.

In fact, a revolver was less expensive than a pair of tires (with tire pump) ~

Possesses all the advantages of the highest priced tires on the market, and yet it can be fitted to any bicycle at the moderate price of $7.00 per pair; with pump and repair outfit.

(Ad from the same issue for Web Tread tires.)

Below, from Flickr, a handsome example of a Iver Johnson truss frame bike (and Iver Johnson rifle, apparently).

"Bicycling for Ladies" (Book - 1896)

Bicycling for Ladies available online from HathiTrust.org. Another version (with the cover) from Harvard.

Bicycling for ladies : with hints as to the art of wheeling, advice to beginners, dress, care of the bicycle, mechanics, training, exercise, etc., etc. by Maria E. Ward. Published in 1896.



Includes many illustrations showing how to (and how not to) ride and repair a bike. The illustrations were made from photographs from Alice Austen and are quite interesting themselves, aside from the text.

How to make a turn.



And how not to make one.



How to coast.



This bike is like a modern "fixie" and the pedals keep spinning as you coast - there is no freewheel feature. Although not clearly visible, the bike she is riding does have a hand brake that will apply pressure to the front tire to slow the bike down, since putting one's feet back on the pedals during this coasting activity could be difficult.

Under "Women and Tools" the author states:

I hold that any woman who is able to use a needle or scissors can use other tools equally well. It is a very important matter for a bicyclist to be acquainted with all parts of the bicycle, their uses and adjustment.

The author then provides a fairly detailed set of basic mechanical advice, although she starts with care of the rider, who is the "engine" after all.

Yet Another Alternative Drive System for Bikes (1896)

While the drive system was a bust, he did have a good idea with his spring-suspension.



From Cycling Life, September 10, 1896. Another invention announced that the inventor hopes will supplement the reliable basic chain system.

The bicycle shown herewith is the invention of John W. Mclntire, of Chicago. The principal object of the inventor is to provide a driving mechanism by which greatly increased speed may be obtained. The rear wheel is constructed with an open center and in reality constitutes a circular track upon which the driving friction-wheel of the machine rests and runs. The track-wheel comprises an outer rim of crescent shape, in which is arranged either a solid, cushion or pneumatic tire, and also an inner rim concentric to the outer rim and connected thereto by spokes. The inner rim of the track-wheel is U-shaped in cross section, comprising a flat horizontal bearing surface and a pair of flanges. These flanges receive the ends of the spokes. The rim of the driving-wheel is composed of two metal rings. Each ring is formed with a flange, by means of which the rings are united to form a rim, the flanges being perforated to receive the spokes. The two rims slide and adjust themselves relatively to each other, thus compensating for inequalities in the surface traveled over and keeping the driving-wheel in constant engagement with the track-wheel. In order to guide the track-wheel and hold it against wabbling [sic] a triangular frame is connected to the main frame of the machine. In this frame are two guide-wheels, each provided with oppositely disposed flanges. These wheels run freely against the inner surface of the wheel-rim and support the track wheel against lateral movement. A brace is interposed between the rear end of the upper main horizontal bar of the frame and the rear corner of the supplemental frame. This brace is made in two sections and permits of-contraction [sic] and expansion by means of a spring. The spring serves to cushion the weight of the rider and prevents his weight tuning transferred to the supplemental frame in such manner as to cause the latter to bind against the inner rim.

The complexity of the drive system description suggests immediately the unlikeliness that this is a better solution than a simple chain connected to wheels with teeth to transfer power. On the other hand, Cycling Life had an oligation to the cycle trade to do this sort of publicity.

On the other hand, the spring "to cushion the weight of the rider" was not the main point of this invention (and perhaps not as unusual as it seems to me 100-plus years later) but is a feature in modern bikes.