Image of the Month — Raybestos Brake Pad

4/15/1971
News Release from Raybestos

RAYBESTOS Disc Brake Pads taken from Al Unser’s winning car (ABOVE) in the 1970 Indy 500 are contrasted with a new and unused Raybestos disc brake pad. Note the very slight wear on the pads which braked Unser’s Johnny Lightning Special as it raced 500 miles to victory in the 1970 Classic. The minimal amount of wear is attributed to Raybestos’ wonder compound R-4528-19M, a special formulation designed to work more efficiently at the high braking temperatures (as high as 1200 degrees) experienced in Indianapolis type racing. Raybestos disc bake pads have been on the winning Indy 500 car for the last 14 years.

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Sam Hanks, 1957 Indy 500 winner and a Raybestos consultant, says, “the pads used on my car wouldn’t last ten laps at today’s speeds.” Hanks drove his 350 horsepower car to victory at an average speed of 135.60 compared to last year’s winning average speed of 155.749.

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More conservative Warren Jensen, Raybestos Research Director, figures pads made from R-4528-19M perform better and wear about five times longer at today’s speeds than would pads made from the previously used material.

Car of the Month — 1986 Citroën 2CV6 Spécial (The Deux Chevaux)

Citroën unveiled the 2CV— The Deux Chevaux: signifying two nominal horsepower (initially it was only 12hp)—at the 1948 Paris Salon. The 2CV, conceived and designed by Citroën Vice-President Pierre Boulanger, quickly became a bestseller, achieving his aim of providing rural French people with a motorized alternative to the horse and cart the majority were still using in the early 1950s. It was unusually inexpensive to purchase and with its tiny two-cylinder, two-stroke engine, inexpensive to run as well. The early 2CV model pioneered a very soft, interconnected suspension, but did not have the more complex self-levelling feature that would appear later. The 2CV remained in production, with only minor changes, until 1990 and was a relatively common sight on French roads until fairly recently. It is astonishing to know that nearly nine million 2CV variants were produced, in eleven countries from France to Argentina, between 1948 and 1990.

The Citroën 2CV featured; low cost; simplicity of overall maintenance; an easily serviced air-cooled engine,  low fuel consumption; and an extremely long-travel suspension offering a soft ride and light off-road capability. Often called “an umbrella on wheels”, the fixed-profile convertible bodywork featured a full-width, canvas, roll-back sunroof, which accommodated oversized loads and until 1955 reached almost to the car’s rear bumper.

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Over the next forty plus year the 2CV went through many iterations (including the 2CV Fourgonnette van, the ‘Weekend’ version of the van that had collapsible, removable rear seating and rear side windows, enabling a tradesman to use it as a family vehicle at the weekend, as well as for business in the week) and modifications, including different size engines (from 375cc to 435cc and then 602cc), revised lights, extra windows, re-styled seats, and even door locks! The key to the 2CV’s huge success was its clever, lightweight engineering, which combined a small, fuel-efficient engine with an extremely light body and drivetrain.
In July 1975, a base model called the 2CV Spécial was introduced with the 435cc engine. Between 1975 and 1990 a drastically reduced trim basic version was sold, at first only in yellow. The small, square speedometer (which dates back to the Traction Avant), and the narrow rear bumper was installed. Citroën removed the third side window, the ashtray, and virtually all trim from the car. It also had the earlier round headlights. From the 1978 Paris Motor Show the Spécial regained third side windows, and was available in other colours. Beginning in mid-1979 a larger 602cc engine was installed in some models.

The 2CV Special seen here was privately imported from Belgium (it still has a Belgian registration plate on the front), and had two previous U.S. owners, before the current owner Frank Barrett bought it in 2011. It is a totally original, un-restored car with only 53,000 miles (85,000km) on the odometer. This ‘Spécial’ features a four-speed transmission, front-wheel drive; shift lever on dashboard, and inboard front disk brakes, with drums at the rear. The unique longitudinal coil spring on each side works as both front and rear suspension. The roof folds back, and the seats are easily removable if you need them for a Picnic!

 

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Car of the Month — (Bocar) Bob Carnes’ Short Lived 50s Brand

What is a Bocar you may be thinking? Its no ordinary vehicle, its quite a speed machine.

The Bocars were created and produced by BOb CARnes (do you get where he came up with the name from?) during the late 1950s and early 1960s in Lakewood, Colorado. The vehicles were available in both kit or assembled form. The majority of Bocars were intended for track and competition use, but they could be driven on the road.

Bob’s first creation was the Bocar X-1, which was built using Jaguar suspension and brakes at the front and a Lincoln live axle at the rear. The powerplant was a 283 cubic-inch Chevy V8 engine. The body was made of lightweight fiberglass. The X-1 was entered in the 1958 Pikes Peak Hill Climb where it finished in fifth place in the sports car class. The car was promising, but needed more refinement and power. After several iterations, the XP-4 was born (P for ‘production). An unknown number of XP-4s were available near the end of 1958 and offered as a kit car or as a complete package.

The fiberglass body sat on a 90-inch wheelbase chassis to which Volkswagen or Porsche suspension could be found in the front, of course given extra modifications by Carnes. At the back was an Oldsmobile live axle with torsion bars. One Bocar was given a set of the latest Jaguar disc brakes, but most were fitted with either Chevrolet or Buick drums. Engines were mostly eight-cylinder units from either Pontiac or Chevrolet and matted to a Borg-Warner T-10 four-speed manual gearbox. A completely assembled example would set the buyer back about $6450.

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The Bocar XP-5 (white car above) was very similar to the XP-4. Main changes were to the brakes which now incorporated Buick Alfin drums. Weight distribution was improved; the XP-5 had a 44% of its weight in the front and the remaining in the rear. This was achieved by moving the engine back into the frame and offset to the right. This improved weigh distribution enhancing the vehicles balance and giving it better traction. Several XP-5 Bocars competed in the Pikes Peak Hill Climb and proved very competitive in the sportscar class. Bob Carnes himself raced a number of times, competing against local racer Frank Peterson (see image below) for several years. Frank was reunited with this very chassis at the November Hagerty Coffee & Cars event in Golden Colorado this year (below).

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The Bocar XP-6 (the darker car in the top image) incorporated a supercharged version of a Chevrolet V8. The chassis was enlarged by 14-inches to accommodate the supercharger unit. Horsepower was around 400bhp which required changes to the suspension. The suspension was beefed up to include a solid axle with torsion bars in the front and a live axle with torsion bars in the rear. The car was quick, but never really gained much national attention. It seems only one example was ever created and was used as Carnes’ person car.

The Bocar XP-7 was the next evolution of the Bocar racers. It was very similar to the car it replaced and had a Volkswagen front end. At a price tag of nearly $9000, the XP-7 was produced in very low numbers.

Bocar’s last racer built was for the 1960 season, the longer, more streamlined Bocar Stiletto. It would appear that less than four were created and carried a price tag of about $13,000. The car was intended to race during the 1960 season. Power was again from a supercharged Chevrolet V8 engine mated to a four-speed Borg-Warner T-10 transmission, and once again it had a space frame chassis and a fiberglass body.

The early Bocar Stiletto was raced at Pikes Peak by Carnes himself, but it encountered problems. A second example was built and sold to Tom Butz for driver Graham Shaw. This second car had a Hillborn-injected small-block engine. A third example is believed to have been built.