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The 7-pound road bike.

  • By VeloNews.com
  • Published Mar. 5, 2008
  • Updated Mar. 8, 2008 at 9:21 AM EST

Start with a set of $15,000, 850-gram Lew wheels. Then shave off all that excess material.

Mai’s bike. He says he rides up to 1000km a week on it.

Photo: Nils Wiedemann

A German rider with a penchant for lightweight rides has put together a 3195-gram (7.04-pound) road bike that he says is sturdy enough for him to ride up to 1000 kilometers a week.

Günter Mai from Lampertheim has modified virtually every part on the bike, including the set of custom Lew Racing Pro VT-1 wheels. Off the shelf VT-1 wheels weigh 850 grams a pair and are made for use by riders up to 185 pounds. They sell for about $6000, while custom wheels like Mai’s cost $15,000.

Mai’s wheels were designed around Mai’s 150-pound body and were delivered to him weighing 734 grams (1.6 pounds). Mai took off another 30 grams by shaving material off the axle end caps, replacing the steel freehub pawls and hub spacers with titanium versions, using tapered carbon/boron axles and full ceramic bearings. He also carved off some of the freehub splines that are not needed with the six-speed cassette he uses.

The bike already had light weight fans on the web excited when it was shown at the EuroBike trade show last fall. The new wheels shaved 103 grams off the bike as shown there.

“The really astonishing thing behind this build is that despite setting the benchmark in weight, it is still perfectly usable,” said Nils Wiedemann, LEW’s European technical consultant. Wiedemann has done two 100km rides with Mai on the bike.

? Frame: SPIN Custom by Marc Siebert (677.5g)
? Fork: THM custom Scapula SP Tuned by Thomas Mertin (214.0g)
? Cranks (incl. BB): THM custom Clavicula by Thomas Mertin (366.7g)
? Headset: custom integrated headset (26.7g)
? Chain: KMC X10SL Silver (214.8g)
? Saddle/seatpost combination: Schmolke seatpost tube w/Speedneedle upper by Jürgen Mikus (the maker of the Tune Speedneedle) (77.0g)
? Cables: PowerCordz Derailleur Cordz (for the derailleurs as well as the brakes) / 4.5mm pneumatic hose for housing (15.6g)
? Brakes: AX-Lightness Orion, modified by Günter Mai (88.6g)
? Front derailleur: Campagnolo Record, customized with carbon parts by Bernhard Langerbein of Bike-Tuning-Parts (28.5g)
? Stem: Nordischer Rahmenbau by Oliver Grest (custom length and angle) 110mm x -8deg (53.8g)
? Bar: Schmolke custom TLO by Stefan Schmolke (111.3g)
? Brake levers: Campagnolo Record, modified by Günter Mai (86.5g)
? Chain rings: small ring carbon 36T, big ring alu 50T modified by Günter Mai (69.2g)
? Rear derailleur: Sachs Huret, customized with carbon parts by Bike-Tuning-Parts (48.3g)
? Skewers: Tune Skyline by Uli Fahl (16.3g)
? Chainring bolts: Tune (9.3g)
? Pedals: Aerolite Titan, tuned by Günter Mai (65.2g)
? Cassette: Recon Alu block 11-16 6speed, 11T sprocket steel – modified by Günter Mai (52.8g)
? Shifting levers: BTP carbon downtube shifters (9.0g)
? Wheels: Lew custom boron by Paul Lew, modified by Günter Mai (704.4g)
? Tires: Tufo Elite 110 (218.0g)
? Seat clamp: BTP carbon 34.9mm by Bernhard Langerbein (6.0g)
? BB cable guide: Campagnolo (2.7g)
? Bar tape: Veloplast (only on the top of the bars) (12.3g)
? Tire glue & air: (20.0g)

? Total:3194.5g

FILED UNDER: Bikes and Tech

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