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Old 12-07-18, 09:30 PM
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Join Date: Mar 2012
Location: Niagara Region, Canada
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Bikes: 1960s Bertin C37, 1970s Bertin C 37

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jboisleduc -

RGF was used frequently by builders of that period. The wood in the steerer is typical of high end French bikes of this time. The wood plug acted as a fail safe in case the steerer column broke at the crown/steering column joint. All 3 of my PX 10s had them and I know many other owners of French bikes had the same experience. The wood plug in combination with the brake fixing bolt acted to hold the steerer column and crown in case of failure. The steerer itself may be a Nervor or Reynolds and the brand will be stamped into the steerer just above the crown joint. If it's a 69-70s frameset, the OEM equipment will be high end French: Stronglight P3 or V4 headset and a 93 crankset, Normandy HF Luxe Competition hubs, Simplex F & R Criterium derailleurs, Simplex seatpost, a Brooks or Ideale saddle, Mafac Racer Brakes, and tubular rims and tires. An alternative would be early an Campy Nuovo Record gruppo.
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