3Rensho XR-7000 Lo-Pro Pursuit Funny Bike

3Rensho XR-7000

After three years, I finally finished my restoration and build of this 53cm 3Rensho XR-7000 bike.  I acquired it from Japan as a frameset, and discovered it was made under license  by Yamakuni.  Check out this prior article for the history and background.  I had the fork re-chromed, but left the main triangle as-is.  I bought a barely-used Georgina Terry Despatch from 1988, and stripped it for the 6-speed Suntour Cyclone 7000 groupset and the 24″ front / 700c rear wheelset.  I’m aware the 3Rensho catalog showed it built with a Shimano 600 group, but they also sold it as a frameset.  Cyclone was Suntour’s second-best group in the same way that 600 was a notch below Dura Ace.

The rear Araya rim had a crack in it, so I re-laced the hub to a brand new Araya RC-540 rim.  The stem is a NITTO S65 Crystal Fellow with NITTO RB-021 bullhorn handlebars, matched to the NITTO S66 seat post.  The 3Rensho saddle finishes off the build in style.  Read on for more photos and ride report! 

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Cuevas Bicycles – A Queens NYC Legend

Cuevas Bicycles was a multi-generational family of bicycle frame builders based in Astoria, Queens.  I have owned two Cuevas bicycles: the one shown above is a one-of-a-kind custom made pursuit bicycle with a 650c front wheel and a 700c rear, with an integrated handlebar/stem.  It was hand made by Fernando Cuevas, the third generation of this incredibly talented family.  I also had a Cuevas Custom randonneur / touring frame by the patriarch of the family, Francisco Cuevas. This article features both of these stunning examples of custom, lugged steel bicycles and traces the history of Cuevas Bicycles.

Fernando’s grandfather and founder of Cuevas Bicycles, Francisco Cuevas, hand-built over 35,000 frames during a 70-year career that spanned three continents. Renowned for his ability to build frames without the aid of a jig or pins, brazing exclusively with brass, and incorporating many unique and thoughtful details, Francisco was a true craftsman of the old world. The Cuevas Custom randonneur frame is testament to his vision and artisan skills.

The pursuit track bike restoration took me two years to complete, and when finished, I brought it to the famous Kissena Velodrome in Queens for an afternoon of laps and photos.  Read on to learn more about these incredible bikes and the Cuevas family.

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3Rensho Aluminum Bikes – Part Two: Yamakuni

Translation: “With a basic weight of 8.9kg, the 7000 series aluminum frame produces the lightness and stiffness required for racing.”

In the early 1990s, TIG-welding was rapidly eclipsing the “screwed and glued” method of aluminum bicycle frame construction. At the same time, aluminum frames were enjoying peak popularity among professional racers, being ridden to victories in the Tour de France and other major events.  This was the era of stiff, lightweight aluminum race bikes with extra-skinny tires, and 3Rensho was not going to be left behind.  Enter the Yamakuni 7000 bicycles, which would replace the SR Litage in the final years of 3Rensho.  Before we get there, let’s dig into a brief history of welded aluminum frames after the jump.

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OSTRO Torro track bikes

ostro1

flickr image by FelixvonPlaten1

It’s been a while since I’ve posted about bikes, but the Ostro “Torro” track frames have me intrigued.  Handmade in Poland, they are rarely seen in the USA.  Their design reminds me of Koichi Yamaguchi’s gorgeous Kilo / Pursuit bike, with the distinctive “triple triangle” seatstays of the  GT Gutterball and curved seat tube of the mid-90’s KHS Aero track frames.

The welds and chunky rear fork ends make the Ostro look like it would be as at home on the streets as the track, though.  Bike Mielec in Poland shows a similar frame in their gallery, I’m not 100% sure that they are the manufacturer of Ostro frames, or if they merely copied one.  I am considering have a copy of this frame built in the USA by Gene Spicer, as it’s probably cheaper and faster than sourcing one from Poland.

Check out the gallery of Ostro’s after the jump.  Note that the geometry differs between bikes – some have the very steep angles and saddle-to-bar drop associated with a pursuit frame, while others like the one pictured above have a horizontal top tube.

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