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Classic Velocity Blog

Filtering by Category: Classic Vehicles

Puch 250 SGS

Classic Velocity

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If a particular model lives for 16 years, it is pretty remarkable. It is particularly remarkable if it was launched in 1953, at a time when “new and exciting” caused manufacturers to replace or upgrade models every few years. But from the launch of the 250 SGS (Schwing Gabel Sport), Puch found a formula that worked, and stuck with it. Puch was formed in 1890 by Johann Puch in Graz, Austria, and began like so many others producing bicycles before moving on to motorcycles in 1903. Fast forward to 1923 when they first introduced the innovative split single. Essentially, it was two pistons in a shared combustion chamber. The idea would later be reborn or licensed in other marques, as Puch supplied engines as well. The twingle did not take long to achieve success success, as a supercharged version won the German Grand Prix in 1931 with Alvetio Toricelli aboard. By this time they had become part of the larger Steyr-Daimler-Puch corporation.

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Fast forward again to 1947 when Puch resumed production of the 250. Then in 1953, they launched new 125cc, 175cc, and 250cc motorcycles including the 250 SGS. Exports soon followed, and in the USA, Puch was rebranded as an Allstate motorcycle sold by Sears with the moniker of “Twingle” to describe the piston/cylinder arrangement. It was famously sold through the Sears Roebuck catalogs. Pricing and catalog sales resulted in this being the first motorcycle for a lot of riders in America. The engine of the 250 SGS was a 248cc 2 stroke unit mated to a four speed gearbox. It produced 16.5hp and 12.5 ft/lbs of torque combined with a weight of 309lbs, for a top speed of 68mph. Brakes were drum front and rear. Suspension was twin shock swingarm in the rear, and telescopic forks up front. A respectable set of features in the beginning, but Puch made few changes and by the 1960s it had fallen behind competitive 4 stroke offerings.

The SGS retained its appeal to new and younger riders, and soldiered on until production ceased in 1969. During its lengthy tenure, 38,584 units were sold worldwide, making it a success for a firm like Puch.

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Check out this period article on a strip down of the 250 engine….

https://berniesbikeshed.wordpress.com/puch-250-sgs-engine-strip-down/

Tornax Motorrader

Classic Velocity

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Tornax was a motorcycle manufacturer from Wuppertal, Germany that was founded in 1922 by Ernst Wewer, but began motorcycle production in 1926. Wewer was a racer, and recruited other racers to help quickly build a name for Tornax (a play on the word for Tornado). Like many manufacturers at the time, they did not produce their own engines, instead using British JAP (J. A. Prestwich) engines of various capacities. Their first machine was a 600cc single called the I-26. In the beginning, Tornax used the year of production in their model names rather than displacement or catchy names. Also unlike other manufacturers, Tornax started with large machines and later went to smaller displacement models. peaking with the 1,000 cc four stroke III-31 SS, which produced a claimed 76hp, and was claimed to be the fastest machine in the world. It was a large impressive machine, but an expensive one with bad timing in the market given the depression. Tornax survived the 1930s by first producing smaller machines, and then reducing its output to a single 600cc model using an engine from German supplier, Columbus. It also moved away from alphanumeric model names and adopted catchy names like Tornado, and Rex (which interestingly utilized a DKW engine), and Schwarze Josephine. 

The factory was destroyed in WWII, but Tornax resumed production in 1948. Ironically, they resumed with a 125cc two-stroke single cylinder model. This was followed by a  175cc, a 250cc and then a twin cylinder 250cc Earles Fork model producing 15hp. A far cry from their 1,000cc 76hp peak! Then in 1954, Tornax purchased the rights to german engine-builder Opti’s four stroke machines to eliminate contracts with ILO, Columbus, and others. Effectively moving engine building in-house. This transition was problematic, and proved to be financially debilitating. At the same time, small enclosed vehicles like the Isetta, Messerschmidt, Heinkel, and Lloyd were emerging to challenge the motorcycle market in general. These factors proved to be overwhelming, and within a year, Tornax ceased production in 1955. A thriving club of enthusiasts remains today in Germany. 

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Dakar Rally Record Setter

Classic Velocity

One of our favorite cars of all time is the Porsche 959 Rally Car (see Porsche 959 Paris Dakar). Partly because it is so far from the intent of the production car, partly because it is a rally car, and partly because it looks great in Rothmans livery. Even the replicas are cool and expensive. Porsche was always pretty good at keeping track of its race cars, so we guess it just waited for a special occasion to let one of these machines change hands. And this is why the Porsche 70th Anniversary auction included one of the 1985  Paris Dakar cars, and then it sold for $5,945,000 ! And this was not a winning car, just one of 3 that all retired with issues. There are four more of the seven produced in the Porsche Museum. We were narrowly outbid, but maybe next time ;-)

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Cuban Cars

Classic Velocity

Friend of the blog Ed Solomon snapped a bunch of great pictures while on a tour of Cuba. A few of the German ones are pictured here along with others. All had great exteriors and interiors, but had surprising engine bays equipped with small transplants, displaying the ingenuity (or is that enginuity) needed to keep these cars on the road...

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Brought to you by MOTOCRON : Record, Monitor, Analyze, Report, on activities for all of your vehicles.

Rabeneick Rules Rebranding

Classic Velocity

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August Rabeneick started a manufacturing company near Bielefeld (which was the origin for multiple bicycle and motorcycling manufacturers) in 1930. Initially he produced grinding machines, and then went on to producing bicycles. It did not take very long for him to transition to motorcycles in 1933. Like many others, he transitioned the ability to make steel frames into a motorcycle business using engines from other companies such as Fictel&Sachs and Ilo. 

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The first machines were small displacement at 75cc and 98cc. Post war, that transitioned to 125, 175, and eventually to 250cc two stroke machines. Rabeneick further developed the relationship with Ilo to one that allowed him to brand their engines as his own. As the 1950s began, Rabeneick also went to smaller 50cc mopeds to make sure that the segment of the market needing very basic and efficient machines wa covered. They also produced a line of scooters which they rebranded as Binetta in the UK (sounds very Italian, si?).

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Keeping with the theme of rebranding, Rabeneick struck a deal to produce the shaft driven 500cc boxer twin from a company called....wait for it.....Universal, out of Switzerland, as his own. This gave him a complete range of machines from sub 50cc moped to the largest popular displacement at the time. Diversification was an attempt to stave off a declining market. The strategy was good enough to attract the attention of Fichtel&Sachs who then purchased Rabeneick in the late 1950s. However, the factory eventually closed, and was sold to Hercules, although the brand lived on into the 1960s on a few mopeds. 

The Cult Turns 50

Classic Velocity

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In the course of the average human life, you don't get to celebrate too many 50 year anniversaries that happened entirely on your watch. Even fewer for products that you still use and enjoy! A few years back, the Porsche 911 celebrated 50 years, and since the model is still in production, it allowed for a grand time-lapse of evolution, memories, and memorabilia.  In 2018, the BMW 2002 celebrates 50 years of production. Two German icons, two vehicles that have fortunately inhabited the garage, and two vey different automobiles. The 02 is a very different celebration, as the last ones left the factory in 1976! They justifiably get labeled as a "cult car", and there is a famous book on the car with that title. Inevitably the factory and a variety of organizations throw grand birthday parties, and this year was no different. The best way to celebrate a big birthday is with a group of passionate fans of this single model. As David E Davis famously said in his 1968 review, "Now turn your hymnals to Number 2002 and we'll sing two choruses of Whispering Bomb . .."

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So where to find a group of passionate fans ? Hhhhmmmm.....Well there are probably a few hiding in your general region, but it just happens that a group of said fans have been heading to North Carolina, USA every year for over a decade. Scott Sturdy has given us rabid fans a great excuse to drive first to his vineyard when the group was small, and then to Winston-Salem which the group also outgrew, and now to Asheville. It is no longer just an 02 event, but it started that way, and the 2002 remains the core of the event. This gathering and the cars have been featured on these pages many times (see Proper Procrastination and Of Propellers And Cobblestones), but this time is a bit special. 

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At the front end of the event, the BMW CCA Foundation hosted a special sold out open house at their facility in Greer, SC near the US manufacturing facility. It was a celebration of the 2002 with cars, memorabilia, speakers, and merchandise. Effectively, the facility became a BMW 2002 museum for the day. Among the many special cars including a Bauer and a Cabriolet, was a better-than-factory Ceylon car. They should have put it on a rotisserie so that you could marvel at the underside as much as the top side. An immersive sensory overdose for the 02 addict, complete with music from 1968 into the early 1970s. I hate to keep using the drug analogy, but we are talking 1968.....The written word (at least our written words) simply cannot do justice to such an event. It is like writing about Woodstock. Imagine getting to attend a private Jimi Hendriks concert for about 200 people. Then imagine that the attendees included rabid fan friends of yours going back a decade or two. Now imagine that you are perfectly sober for the whole thing and can remember it!  

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But wait, there's more. That evening, the entire host hotel parking lot was turned into a BMW pre-show that went on well into the night. I think the only non-BMW in the parking lot was the hotel shuttle. On behalf of the entire BMW 2002 community, I apologize to any guests that were not part of this event. On the other hand, you will have stories for your grand children! 

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But wait, there's much more. The official show is always the next day, Saturday, now at a picturesque park in Hot Springs, NC. As always, 02s have a field unto themselves, this year including a few lovely Neue Klasse cars, and several of the immediate precursor to the 2002, the 1600. It is in this setting that you could readily appreciate the many individualized creations that make up the community. It is nothing if not diverse. The foundation event was the curated version, but the park was a canvas for everybody. The album will do the talking here, but suffice it to say that just about every color and variation was present in treatments from mild to wild. And almost all driven to the event from far away. Oh yeah, there were other cool BMWs there as always, but this one was about the icon. The cult car. 

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As a true driver's sedan, you can pay no greater tribute than to drive these cars., and after a great long weekend, they were driven back home hundreds of miles away. A fitting 50th birthday party if ever there was one. 

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Cross Continental MZ

Classic Velocity

For those of us that believe we need to have a well-equipped electronically-assisted modern touring machine in order to contemplate a cross country trip, Kim Scholer begs to differ. He is taking a 1970 East German 250cc MZ pulling a Czech trailer ! And this is an upgrade compared to his last such trip !!

 Kim's Blog  MC Classics Article  Classic Velocity MZ Blog Posts

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Framo 2-3-4 Wheels

Classic Velocity

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Innovation in frames and platforms was the norm in the early days of the internal combustion engine, and many companies were simply trying to find the most efficient means to accomplish a task. One such company was Framo, founded in 1923, the same year as BMW. Although founded in Saxony, Germany, it was started by Dane Jorgen Rasmussen, who also founded DKW. The main idea was to use Framo to produce components for DKW motorcycles. After 3 years, that lead to the production of a commercial motorcycle-based vehicle, Basically, it was a trike with a cargo platform. This TV300 model emerged as a Framo vehicle in 1927. Variations for Framo included a single wheel at the front driven by an engine directly above it, a single wheel at the rear, enclosed cockpits, and open trikes with a covered rear. In other words, many permutations and configurations were tried.  Three-wheeled experiments in turn lead to the 4-wheeled Piccolo and Stromer models in the 1930s. All models were powered by 200cc-600cc 2 stroke motorcycle engines. Sales were simply ok in many instances, and weak in others, with no real sales successes.

Postwar, the factory was dismantled and shipped to Russia. Production resumed however in 1949 with what was essentially a pre-war model. Although there were further attempts at passenger vehicles, commercial applications were the only consistent sales. Even this was not to last very long, as the company became VEB Barkas and then concentrated on compact passenger vans. But that is a story for another time....

Goliath GP700 Sport

Classic Velocity

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Goliath was founded by Carl Borgward in Bremen, and has been mentioned in these pages before (see The Many Faces of Borgward and Maintaining Tempo). They are perhaps most well known for their three-wheeled vehicles with commercial applications.  After the war, three wheeled production restarted first. Their first postwar four-wheeled vehicle was introduced at the Geneva show in 1950, and it was a small 2 door coupe called the GP700.  It sported a 688cc two-stroke engine producing 25hp in carburetor form, and 29hp in fuel injected form. 

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At the Berlin show in 1951, Goliath introduced the GP 700 sport. The sport was front-engined, and front wheel drive! It featured an enlarged 845cc engine, capable of 32 hp and 44 ft/lbs of torque, but it only weighed 1753 lbs. It was equipped with Bosch fuel injection prior to the Mercedes which is often thought to be the first. Top speed was 78mph, and you did not get there quickly, but this was adequate performance at the time. The GP700 also featured a 4 speed synchromesh gearbox, which was again advanced for the time. The swoopy body was from Karosserie Rometsch, and had similarities with the Porsche 356 and the Borgward Hansa. In particular, the cabin profile, the wheel arches, the hood, and the sloping rear with a small trunklid, could easily lead you to believe that this was a Porsche product. The interior was elegant, with a painted dash and luxurious VDO gauges. 

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The Sport was a true hand built car, and was very expensive. offered from 1951 to 1953 in model years, but was really only in production from Mid 1951 to mid 1952. It's low production numbers (only 27-30 were believed to be produced) and unique features make it rare, and few survived. However, it introduced a number of features which went on to become standard in automobiles for the latter half of 20th century.

NSU Supermax

Classic Velocity

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Neckarsulm Strickmaschinen Union (NSU) emerged from producing knitting machines and bicycles to motorcycles and cars. By the  mid 1950s, NSU had grown to become one of the largest motorcycle producers in the world. It directly translated great success on the racetrack with the Rennfox and Sportmax machines into showroom sales, as they amassed victories in sidecar, 125cc and 250cc world championships (see Of silver dolphins and blue whales). One of the best translations was the NSU Supermax.

The Supermax was introduced in 1953, and was designed by Albert Roder who had worked on the supercharged racing motors. It was a 250cc 4 stroke single, producing about 18hp at 6500rpm, and weighing just 384lbs. The innovative features introduced included a new "calm" air filtration system, and a chain driven overhead camshaft. At the time, these were somewhat ground-breaking on a production motorcycle. It also featured a four speed gearbox which propelled the machine to 78mph. Very respectable for a 250cc thumper. Brakes were drum front and rear, on 19 inch wheels. Other innovations included the monocoque pressed steel frame, and a short rocker front suspension.

The Supermax enjoyed very good sales, helping to propel NSU to become the world's largest motorcycle producer in 1955. They also held world speed records in 1951, 1953, 1954, and 1955, including breaking the 200mph mark for motorcycles at Bonneville. The Supermax model continued until it was replaced in 1961. 

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The Variant

Classic Velocity

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As covered here before, (see the rise of the type 3), Volkswagen was among the first automakers to really leverage a single chassis for multiple variations on a large scale. This was certainly true for the Type 3, where the Notchback, the Fastback, and the Squareback, were all manifestations of the same base. And that base, was the beetle chassis. The Variant (Squareback) was the Estate model, or the Station Wagon model in the USA. It answered the basic need for more room to carry people and/or goods. Just like the VW bus, variety was provided by two variations of the variant (ok, I promise to end this now). There was a two door passenger version, and a two door panel van version, which only had front seats with a large cargo area behind them. While the Type 3 was launched in 1961 with the 1500 Notchback, the Variant first saw production in early 1962, but did not make it to the US until 1966.

Of course, the key to the Type 3 cars was the flattened version of the 4 cylinder air-cooled engine. That engine weighed under 300 lbs, and was only 18 inches tall. The cooling fan was lowered and relocated, the gerator was relocated, and the oil cooler was repositioned. In total, it was a brilliant repackaging of the standard beetle engine. In fact, it came to be called the pancake. Power was not the forte of this engine, as it produced a mere 50hp, and was good for a top speed of 77mph. In later years, it gained the dual carburetor setup and then got the landmark Bosch D-Jetronic fuel injection. Back to packaging, the engine fit below the floor in the rear allowing for a usable trunk. Coupled with a front trunk compartment, storage capacity was very good. With the additional vertical room provided by the "Squareback" body, it was excellent. The interior was relatively luxurious by VW standards. Pleated vinyl, headrests, full carpeting, an attractive gauge pod, more than spartan door panels, the option of an automatic, etc. 

Although sales were small in comparison to the mighty beetle, more than 1.2 million Variants were sold between 1962 and 1973, and that number climbs to 1.45 million if you include Brazilian production as well. This is well over half of the entire Type 3 production. The Variant remains popular today among air-cooled VW enthusiasts and is well represented on sites like www.thesamba.com and www.type3.org

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First Wankel

Classic Velocity

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In 1963 at the Frankfurt International Motor Show, NSU introduced the world's first production car with a Wankel engine. The Wankel Spider was designed by Bertone, but up front it had a passing resemblance to the Pinninfarina-designed Alfa Giulietta Spider. The car was basically an NSU Sport Prinz Coupe with the roof cut off, and a rotary engine mounted over the rear axle. This allowed for two trunks while maintaining the sporty shape and appearance, but the front trunk was small in order to make room for the radiator and gas tank. The rear sheet metal was modified from the coupe to allow for storage of the folding top, and the rear engine compartment. The two-seater interior was elegantly trimmed in two color leather. 

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The 500cc engine made just under 50hp, which was adequate at the time, given the 1500lb weight, but the high revving engine sounded like nothing else on the road. It was good for a top speed of 98mph. However, the materials used in building these first generation engines caused more rapid wear than anticipated, and problems began to surface once the cars were in the field. Engine rebuilds were common at 30,000 miles, although it took a while for most cars to get there. Handling, however, was superior. according to Autocar at the time, "The Spider is really most enjoyable on minor roads with lots of twists and turns, where its exceptional stability and cornering powers, together with the quick reactions of its rack-and-pinion steering, allow very fast averages to be maintained."

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Only 2375 were built, and only a paltry 215 made it to the US. Ironically, one of those 215 became the first Wankel race car, competing in SCCA H Modified. It is believed that the relatively high price, and low production numbers were evidence that NSU introduced the car more as a test bed for the rotary engine. An improved version was introduced in the NSU R080 sedan in 1968 (see NSU R080). 

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Classic RS Rally

Classic Velocity

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It is hard to imagine, but the original BMW R100RS was launched in the fall of 1976 as a 1977 model, and is now 40 years old.  There have been many variations and iterrations since then, but the original production vehicle still defines the model. At the time of its launch, the RS was a radical departure from other machines of the time. It was a fully faired machine compared to naked machines, it offered bold futuristic styling,  and relatively luxurious accommodations to envelope the pilot as he consumed miles by the hundreds each day.  A top speed of 108 mph, and 70 hp in a 535 pound machine was a very good performance package at the time. It was a true "Gentleman's Express".

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The RS started with a recognition by BMW Motorrad that their bikes were sort of....well...dated, and were in danger of appealing only to an older demographic. Their solution was to employ stylist Hans Muth to spruce up the line, and get younger customers excited. He used the wind tunnel to design and then test a multi piece fairing that would look modern if not futuristic. The result was a 5.4% reduction in drag, and a 17.4% reduction in front wheel lift. To put this in perspective, lots of riders of all marques were buying and attaching Windjammer fairings to their machines for touring at the time. However, the R100RS was considered the first production model to come fully faired off the showroom floor.  At the time, Motorcyclist's Bob Greene said "In one bold move the Germans have advanced motorcycle styling several years". More than that, the bike offered great protection from the elements. Many consider this motorcycle to be the birth of the Sport Tourer. A special Motorsport edition was later launched with a signature red nose on the fairing, and many RS machines including K bikes and R bikes to the present time, occupy BMW showrooms and enthusiast garages.

Which brings us to Todd Trumbore, and the 40 year celebration of the RS. Todd has been a guest author for Classic Velocity, a great motorcycle enthusiast in general, and is well known for his annual rides. He is also known for his R90S 40 year celebration a few years ago. Once again, he has gone above and beyond in bringing Hans Muth to anchor a celebration of his design. The lineup of silver blue 1977 RS machines was spectacular, including serial number 001. The collection of attendee machines was impressive as well, including a million mile R100S. Camping and tech workshops and lectures, and the Airhead Store, and food and drink, made this a true Rally worthy of the BMWMOA organization. But it was essentially the work of one man. Great guy, great machine, great event.

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Mercedes 200D : Building The Diesel Legend

Classic Velocity

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 Mercedes Benz has always been a premier luxury marque, but they have also been a producer of basic workhorse transportation. Pick a movie from the sixties and seventies set in Europe, the Middle East, or the third world in general, and you will note their legendary role as the taxi cabs of the world. That legend started with the W110 in the early 1960s, and in particular with the Diesel variant. Mercedes was never the cheapest sedan, but in the case of the 190D and 200D, they quickly built a reputation for running millions of kilometers, tolerating heavy loads, and being generally indestructible. Those are the key attributes of a commercial vehicle, but in this case, they were embodied in a sedan.

The W110 series began in 1961 with the introduction of the 190 cars., replacing the W111 series and confounding the once logical Mercedes nomenclature. They were part of the Heckflosse (Fintail) series covered here before (see The Heckflosse Champion), and had the signature appendages in the rear. In the front, they looked like the preceding Ponton cars (see Ponton Production) with the round headlights and the snub nose. Inside, wood was replaced with Bakelite, and luxury seats were replaced with fixed back items. But the key gamble that Mercedes continued to take was in promoting the Diesel engine. At the time, diesel engines  were noisy and visibly produced soot out of the tailpipe. They also had extremely sluggish performance. The press was not kind to these machines, and the traditional Mercedes customer did not view them positively either.

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However, the taxi cab industry had quite the opposite view. These were robust, relatively fuel efficient vehicles with enough comfort to be the ideal conveyance. If it was good for taxicabs, then it was good for others desiring rock solid transportation, and sales grew along with the reputation. Between 1961 and 1965, the diesel variant outsold the gasoline version by over 95,000 units. In 1966, a second series of the W110 was introduced. The inline 4 diesel in the 200D now had a 5 bearing main crankshaft, twin carburetors, and increased bore to yield 1988cc. This produced a whopping 60hp, and a top speed of 130kph in a vehicle weighing 2794 lbs. This was not a performance sedan! However, it also went on to outsell the gasoline variant by over 51,000 units between 1966 and 1968. 

Overall, over 387,000 of the W110 diesels were produced by the time they were replaced by the W115 series in 1968. They cemented the legendary status of the Mercedes Benz Diesel engine, which also became popular in marine applications. It also provided a reputation for reliable, durable vehicles to complement the image of premier luxury automobiles. Remember the 600 Pullman was produced in the same timeframe, as were trucks and vans. No other manufacturer at the time had such an effective grasp of both ends of the spectrum.

The Neander Meander

Classic Velocity

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Ernst Neumann Neander of Duren, Germany was a man of many talents. He was known as an artist, with works in sculpture, painting, and poetry. However, he reportedly built one of the earliest motorcycles in 1886. He later returned to motorcycles in 1926 when he designed the machine seen here. It had many signature features, the most prominent of which was the box section frame made or Duralumin. But for the headlight, you would be excused for thinking this was a machine from 30 years later. The frame looks like a modern twin spar, the tank could be postwar, etc.  The frame went on to be licensed by Opel, which used it with some success in racing. It also featured a unique articulating fork. Neander used several different engines in his machines including JAP, Villiers, and MAG.    Although some small displacement machines were created, the majority were either 500cc or 1000cc machines. Overall, the look was very modern for the time, and it was thought to be both artistic and innovative.  However, they were not to everyone's taste. Only about 2,000 Neanders were produced over almost a ten year period, and they went out of production in the 1930s. They also produced tricycles and quadricycles, which never appealed to the public and were short-lived.  Neander also produced several very interesting cars during this time, but that is a story for another post. The name has been resurrected in recent times to be used on a turbo diesel motorcycle. 

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Victoria Bergmeister

Classic Velocity

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Victoria as a marque has been covered before (see The Victoria Ventures). The word Bergmeister dates back some time, and refers to the Foreman of a mine in Germany and Austria. However, in the context of Victoria, it is intended to translate to Mountain Master.  The model was introduced in 1951, and was quite remarkable at the time. It featured a 4 stroke ransversely mounted 80 degree V-twin reminiscent of a Moto Guzzi. It was air-cooled, and had pushrods activated overhead valves. A single Bing carburetor served the 350cc motor, which produced 21hp, The engine is also noted for its streamlined Art Deco appearance. The cases are smooth, and enclose the aforementioned carburetor, giving an appearance common to today's no-visible-cables custom bikes. Elegant body panels and frame paint added to the blend of old and new.

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The transmission used chains rather than gears which reportedly produced a quieter ride. The 4 speed  fed a shaft drive system. Total weight of the bike was 398 lbs, and it was often used in combination with a sidecar. Suspension was telescopic forks up front, and a plunger rear end. It took until 1954 for the Bergmeister to make it into production. It was very expensive to produce into a market with good competition from NSU and BMW. However, it did well in hill-climbs and other trials at the time to become well regarded. Reportedly, only about 5,000 Bergmeisters were produced until Victoria merged with DKW in 1958 to form Zwierad Union. 

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FAKA

Classic Velocity

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From 1952 to 1957, Fahrzeugwerke Kanneberg produced stylish scooters featuring "Jet Age" design. The key design element was a jet turbine looking feature beneath the seat, but they also had side air scoops and a smooth front end profile. The scooters were very well regarded from a quality and styling perspective, but they were high-priced. They also produced a three-wheeled commercial vehicle with a front-wheel mounted engine. 

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Eventually, the high pricing killed sales, and production ended in 1957. 

Neue Klasse Homologation Special

Classic Velocity

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In 1962, BMW broke even for the first time since the war thanks to a strategic infusion from the Quandt family, and some surprising success with a few models (see Birth of the Bavarian Sports Sedan and The Halo and the Hail Mary). This allowed them to introduce the Neue Klasse sedans in 1963 which immediately began to sell well. A 1500 model was introduced in various trim levels, all using the now famous "3 Box" design, and the M10 engine. The 1500 gave way to a 1600 model (except in countries where 1500cc was an important tax limit), and the a 4 door 1800 was eventually introduced. 

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A homologation special, the 1800 TI/SA, was introduced in 1964. It was produced to support the factory works effort, and took the TI (Turismo Internationale) production version and upgraded it to SA (SonderAusführung) specifications. This involved higher compression (10.5:1), twin Weber carbs rather than the twin solex TI, larger brakes upfront and rear disc brakes, a 5 speed gearbox, and a hotter camshaft. In the cockpit, there was a special tachometer and sport seats. On the exterior, there were no bumpers, and plain wheels without trim or covers. The end result was 150 hp compared to 120 hp in the TI. Only 200 of these specials were produced, and they were sold only to race teams.

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The TISA was successful in competition, winning the German national championship in the hands of Hubert Hahne in 1964, and coming second at the Spa Francochamps 24 hour race. In 1965, the TISA won Spa in the hands of Pascal Ickx (yes, father of Jacky Ickx). Today, you can still find the TISA at events like Goodwood and the Monterey Historics, but they are mostly tucked away in private collections and museums. 

A Fuel's Errand

Classic Velocity

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Simplicity is good. Few moving parts, a basic electrical layout, black paint, no frills. This could be a description of the Ford model T, but it is not. It is a description of our BMW R26. A 1956 single cylinder, single carb, 6V standard motorcycle. It does not get much simpler, no matter how far you go back. The motto of the Airheads (of which we are members) is "Simple by Choice", and this machine beautifully embodies that motto. It is a beautiful machine built for a purpose, at a time when quality efficient transportation was key. It even has points for sidecar attachment, despite having just 15hp at its' disposal. If you have ever been dragged along the ground by 15 horses at a gallop, you will know that it is more than adequate power.  So with such a simple and well-built machine, what tale do you have to tell ? Glad you asked.

It started with the smell of fuel n the garage. It took a while to trace it to the R26, but there was definitely a more pronounced smell around that machine.  There was no visible stain or wet spot, just a lingering smell of fuel. The usual suspect on machines like this is the float bowl of the carb being faulty, and failing to shut off the fuel supply leading to a leak. The bottom of the float bowl was suspiciously moist, and the engine casing below it was suspiciously clean, so it seemed like an open and shut case. Upon examination, the float had trapped some moisture, and so a new one was sourced (ridiculously expensive for a brass float compared to plastic, but this bike is nice enough to warrant original). A new float bowl gasket was ordered as well. Once received and installed, I went for a test ride and all seemed well. 

Next morning, faint smell of fuel. there was a droplet of fuel forming at the same spot on the bottom of the float bowl. At this point, I began to see if there was a route to the bottom of the float bowl coming from some other part of the carb or the fuel hoses. There was nothing obvious, although at one of the fuel hose connection points, the fabric-covered fuel hose was definitely damp from fuel. Since this motorcycle is just gravity-fed for fuel, there were no clips on any of the connection points. Despite not liking the look, hose clamps went onto every connection point. There was no other place where fuel was evident, so I took a brief test ride and checked. And then I checked again an hour later. The problem looked solved.

Next morning, faint smell of fuel. I laughed the kind of laugh that pokes fun at oneself, but which really indicates that the situation is not really funny anymore. Upon examination this time, there was no longer a droplet at the bottom of the float bowl, but there was a clean spot on the engine case right below where one of the hose clamps now lived.  Well I was planning to do a carb rebuild anyway, and so I did. Then, climbing a diagnostic ladder toward the fuel tank, I encountered a moist area right at the petcock lever. Aha ! A notorious spot for problems due to the disintegration of the o-ring gasket. Not content to stop there, I also ordered the petcock gasket for the attachment to the tank. Parts arrived a week later, and took only a few minutes to install. I sat watching the petcok with the fuel turned on, and the machine off. No detectable leakage. I waited an hour and checked again. No detectable leakage. I took a test ride. No detectable leakage. I waited 2 hours and looked again. The petcock was moist with fuel. 

From what I could tell, the fuel began right where the petcock threaded on to the tank. But it had a new gasket that I had just installed! I drained and removed the tank and concentrated my attention on the petcock flange. Nothing detectable. I put the petcock on it, plugged the cross connection, and threw in a little fuel. Nothing detectable. I then put the tank in its normal position, and taped some paper towel to the tank encircling the petcock flange. I let it sit. An hour later, Bingo ! The paper towel was moist with fuel. Not much, but certainly enough to form a drip over many hours. I repeated the experiment. Same result, a small fuel leak from the tank itself.

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I emptied the tank and began to lightly sand the area around the flange. It was built up with solder, so someone had been here before. I could not find the specific point of the leak, but there were a few suspect areas once the paint was removed. After some days of drying, and then work with a wire wheel and dremmel tool, most of the solder was removed, revealing a hairline crack. It was clear then, that vibration was probably the key ingredient to making it leak and find its way through the solder patch job. Once cleaned up, it was properly welded, and the the paper towel test was repeated. Bone dry. 

So what did we learn? A repeated lesson shared before in To Fuel or not to Fuel, and in On Getting Grounded and in To Spark or Not to Spark. Obvious solutions, and the usual suspects sometimes mask the culprit. I did not go to the tank first, because carbs and petcock are notorious for fuel leaks, and I thought I found the problem with the float bowl (which did have an issue, just not the main one). In this case, the simplicity of the machine contributed to a sense that the solution must also be simple. It was, that is once I found the root cause....