This classic steel frame from the French manufacturer Pithioud, dating back to 1960, is optimized for a traditional 650 wheel setup. It represents a rare opportunity for collectors to reconstruct a mid-century touring bike with period-accurate geometry. The frame displays classic craftsmanship with lugged construction, typical of post-war European cycle production.
Technical Specifications & Vintage Integration
Engineered with classic French dimensions, this frame requires specific matching components. It is built to house a 25.2 mm seat post and features a traditional French threaded bottom bracket. The fork steer tube uses standard French dimensions, ensuring compatibility with period-correct headsets.
Technical Data
- Size: 52
- Seat tube (a): 52 cm (measured from bottom bracket centre to top of the tube)
- Top tube (b): 53.5 cm (measured centre to centre)
- Total weight: 3170 g
- Rear spacing: 122 mm
- Seat post diameter: 25.2 mm
- Bottom bracket thread: 35x100 "French"
- Fork thread: 25X100
Restoration & Compatibility Notes
The photographs form part of the description and show the exact cosmetic condition, including light surface patina and wear consistent with its age. If you are completing a vintage build with this frame, you may also require period-correct parts. To assemble a steering system, consider pairing this with vintage handlebars such as the Vintage Steel Handlebars 400mm. For a classic touring build, you can also view our other listings like the Ginet Touring Bike Frame to compare geometries and tubing setups.
FAQ
What bottom bracket threading does this Pithioud frame use?
This frame features French bottom bracket threading measuring 35x100 mm, which requires a matching vintage French-threaded bottom bracket cup set.
What is the seat post diameter size for this frame?
The inner seat tube diameter requires a 25.2 mm seat post, which is a common dimension for French steel frames of this vintage.
What size wheels are compatible with this frame?
This Pithioud touring bicycle frame is designed to fit classic 650 (650B) wheels, matching the brake reach and clearance built into the frame.
