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Friday, July 27, 2012
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Wednesday, July 25, 2012
Tuesday, July 24, 2012
Monday, July 23, 2012
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|Poor ole' Joe sitting by my "Path Racer"|
It was another hot and humid day today. It was hard for me to get motivated to ride, but some days you just have to get on your bike and go. I ended up getting in a nice 40 mile fixed gear ride.
As I rode through the Arcadia, NC community I noticed the time and temperature sign on the bank was displaying 92 degrees.
|Off in the distance you can see Richard Childress's cattle are all huddled together in the shade of one tree.|
Friday, July 20, 2012
Author: Hilary Stone
Modern bicycle rims are light, strong and generally very dependable – true the braking surfaces can wear out but that is mostly down to modern abrasive brake materials. It was not always this way… Most top quality and even the middle range rims are designed with a hollow box section and the spoke nipples are fastened through an eyelet that joins both the top and bottom walls of the rim. The box section is essentially a tube – we all understand that a tube can have a much higher strength to weight ratio than a solid section. That is why bicycle frames are made from tubing rather than solid material. Most rims are these days made from aluminium alloy which have quite a high strength, which can approach that of the lower strength steels. Perfectly adequate strength can be built into a rim with really quite thin walls but spokes carry a very high tension which means that the loads into the rim are highly concentrated around each spoke nipple – eyelets which connect the top and lower walls of the rim distribute the stress across the upper and lower walls of the rim.
The first rims to use these principles were introduced as long ago as 1933/4. Very curiously, two patents were taken out within two hours of each other in two different countries with these exact features. In Italy Mario Longhi registered his patent on January 5th just two hours before Mavic in France registered their patent for a virtually identical design. Longhi licensed his patent to Fiamme (hence on early Fiamme rims the words Brevetti Longhi) and very graciously also allowed Mavic to license his patent as, of course, his patent had priority over the Mavic one. But more mystery surrounds the introduction of the rims – the design and actual rims were exhibited in England at the Lightweight Cycle Show in November 1933 two months before the patents were taken out…
Two images of a c1935 Fiamme wired rim showing the steel eyelets from each side of the rim
In the 1930s aluminium alloy bicycle rims were still quite a rarity despite such rims rims being first manufactured in the Edwardian period for luxury roadsters such as Sunbeam and Lea Francis. These bicycle makers were however far less concerned about weight than about appearance – the aluminium did not need plating and kept its shiny appearance for longer. In the late 20s and early 30s aluminium rims made a reappearance – we have looked at Constrictor Conloy rims – these were a pioneering rim using aluminium alloy initially in a solid section and later with a very slight hollow section. These were quite reliable and light but not very stiff.
Mavic’s version of the new design was soon tested in competition in conditions of great secrecy in the 1934 Tour de France by the French star Antonin Magne. His rims were supposedly painted in wood colours to look like the wood rims used by the vast majority of the participants. Wood rims seriously lack stiffness though are reasonably light and also offer a poor braking surface. However, they do insulate the tyre from the heat generated by braking on really long descents. Mavic’s new aluminium rims offered improved braking, were very strong, stiff and lighter than the wood ones.
Fiamme manufactured both wired-on (clincher) and sprint rims for tubular tyres using the design. The rims for wired-on tyres were more of a Westwood section with only a very narrow surface for braking on in the first year. And the eyelets joining the upper and lower walls of the rim were aluminium. By 1935 a squarer section rim for wired-on tyres was introduced alongside the other one and the eyelets were cadmium plated steel because according to the British importer there had been some troubles with the aluminium eyelets – presumably coming loose. Of course it was the sprint rims that the serious racers used. It did not take long for the new aluminium sprint rims to largely take over from the wooden ones for road competition.
Both Mavic and Fiamme exploited the Longhi patent to great effect though Fiamme after WWII dropped the design for wired-on tyres. It was not until 1975 when Mavic introduced the Mavic E narrow section rim for wired-on tyres that the design made much of an impression for non-racers. Now of course solid-section rims are obsolete except on the very cheapest bikes and most also use double eyelets proving just how far ahead of the time Mario Longhi was.
In England two types of rim for wired-on tyres were offered – the original design in almost Westwood tyre section (as in the photos) and the square design in both 26 x 1/4in and 26 x 1 3/8in sizes. One design of sprint rim with a flat sidewalls and reasonably deep box section was offered. They represented the very latest in technology – then as now – technology did not come cheap they cost around 34/- (£1.70 a pair). A complete cheap bike at the time could be bought for £4.
Fiamme offered two designs of sprint rim - the standard rim with squarish box section and eyelets for road use and a lighter narrower rim for track use with steeply angled sides and not really suitable for use with a brake. The rims for wired-on tyres were solid section. Later in the 1970s Fiamme pioneered the use of the higher strength 7000 series aluminium alloys in their Ergal rims which weighed under 280g each.
Right: 50s Fiamme track racing sprint rim with curved sides
Above: a drawing from the 1935 catalogue showing the original Fiamme design of sprint rim for tubular tyres.
Bordeaux - Paris Road - Race 1928
Sunday, July 15, 2012
|Here I am at the track.|
|Greg Curtis with his bike sporting some new wheels!|
|Greg was doing some Kilo practices on the track. In this photo he is high on the banking. Before he starts his Kilo he will get up to speed by dropping down the banking to the bottom of the track. This is a 250 meter track, so a Kilo is 4 laps.|
|Greg is now at the measurement line and going all out.|
|Poor ole' Joe supervised as I cleaned up my bike.|
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|Paul Components' Track Hubs with a polished finish.|
The folks at Paul Component Engineering machine these hubs from three inch round bars of 6061 aluminum. The hub shells are put through four different machining processes before they go to finishing. The front and rear have the same flange widths and diameters for easy wheel building and a perfectly symmetrical set of wheels.
High Flange hubs now use a special extra strong aluminum axle with stainless knurled axle faces. Fancy machined bolts and washers keep them on.
|Paul's High Flange 28 hole front track hub.|
|Paul's High Flange 28 hole rear track hub with the fixed/freewheel flip flop option .|
|The cool but simple quality packaging of Paul's Components.|
Friday, July 13, 2012
Marinus ("Rini") Wagtmans (born December 26, 1946 in Sint Willebrord) is a former Dutch professional road bicycle racer. He was the nephew of Wout Wagtmans, a former professional who had won the Tour de Romandie stage race in 1952. His father was a masseur while Tour de France stage winner Wim van Est was his neighbour. In 1968 Rini turned professional. The following year he finished third overall in the 1969 Vuelta a Espana. He rode four editions of the Tour de France and won three stages, one in 1970, one in 1971 and one in 1972. In the 1970 Tour de France he finished fifth overall. In 1971 Tour de France while riding for Molteni, he wore the maillot jaune for one day but teammate and team leader Eddy Merckx took the jersey the following day. He also won two stages in the 1970 Vuelta a Espana. Wagtmans was known as one of the best descenders in the peloton and earned him the nickname "witte bles" which is translated as "white blaze". Wagtmans ended his career early due to heart problems.
Wednesday, July 11, 2012
Monday, July 9, 2012
Marty Nothstein during the 2000 Olympics in Sydney, Australia.
Marty Nothstein was born in Allentown, Pennsylvania on February 10, 1971. As a professional cyclist he raced both road and track. On the track he won 3 world championship titles and an Olympic gold and silver medals. His track racing nickname was The Blade, giving to him for his razor thin margins of victory and his ability to slice through a field of riders.
Nothstein never let anything stand in the way of his training or racing. While nursing a broken heel, and having to hobble to his bike on crutches, he won both sprint and keirin events at the 1994 World Championships. At the 1995 World Championships he raced with a fractured knee cap and won a bronze medal as a member of the U.S. team sprint squad.
Marty Nothstein (on left) won the silver medal in the match sprint while Jens Fiedler of Germany won the gold medal at the 1996 Olympics in Atlanta, GA.
Marty was frustrated with winning a silver medal and not a gold medal at the 1996 Olympics. He was dedicated to winning a Gold Medal at the 2000 Olympics. Through years of hard training and planning he was successful at winning a gold medal at the 2000 Olympics in Sydney, Australia.
Marty Nothstein winning gold in the Match Sprint at the 2000 Olympics.
In March of 2001, he turned professional on the road, first racing for the Mecury Viatel team and finishing out his career with the Navigators team. He retired from bicycle racing in 2006.
Nothstein became a NHRA Top Alcohol Funny Car driver in 2007. At present time he is the Executive Director of the Valley Preferred Cycling Center (his home track in Pennsylvania).
Friday, July 6, 2012
Thursday, July 5, 2012
Leon's younger brother Emile was also a very successful cyclist, winning the Bordeaux–Paris and 9 stages of the Tour de France. His son Pierre Georget won silver (1000 metres) and bronze medals (tandem) at the 1936 Summer Olympics.
Wednesday, July 4, 2012
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|Louis and Alan the ride leaders. Alan has the traditional two fingers behind his head in this photo.|
Louis and Alan have been leading this ride and all the Hearts Rides for many years. They do a great job of deciding on routes and keeping the rides running smoothly. Click here to go to the Forsyth Bike web site and learn more about these rides.
The traditional ride for the fourth of July is "Circumnavigate Pilot Mountain". This ride is 56 miles in length beginning at the Lewisville, NC town square. We had a large group of riders today and a great time was had by all. Chris and I turned off a little early to shorten the ride a bit. We still ended up riding 50 miles of the ride. I rode from home and ended up with a total of 66 miles for the day.
|Carole with her Project One Trek Madone.|
(That's Carole's fingers behind Alan in the above photo.)
|The group gathering before the ride at the Lewisville Town Square|
|The riders going around a curve on Flint Hill Road headed towards East Bend, NC.|
Monday, July 2, 2012
|1909 Bol d' Or|
The race was created on June 23 and 24, 1894 by a Monsieur Decam. It first ran at the Velodrome Buffalo in Paris and was sponsored by Chocolate Meunier.
In the early years riders were paced by tandems or triplets. In 1899 electric tandems were tried and motor (derny) pacing was used in 1950.
The race gets its name from the prize awarded to the winner - a gilded bronze bowl or cup.