I wanted to share with you my new custom frame (from the brand PiR of course...).
There's a lot of work in this frame because I wanted something different and original, but with a simple diamond design.
Better than words, here are some pictures of the building process...
I started with the upper bridge :
The PiR signature dropouts, with for the first time, a new integrated chain tensionner for the drive side.
Headtubes...
Front gusset
Seat tube with externally machining and integrated seat post clamp.
The wishbone (it's 4 parts of tubes welded together)
...and the frame welded
and some details
Specifications :
TT : 19.2"
CS : 12.4" min
HA : 76.5°
SA : 71°
Standover : 4.7"
BB heigth : +3.15"
100 mm long head tubes with custom machining
Integrated chain tensionner
Externally machined seat tube
Integrated seat post clamp
Lower front gusset
Euro BB with custom machining
Special wishbone
Special bridge
Swaged and tapered rear tubes
Flatened seatstays on the seat tube connexion
Special additionnal bend for better chain clearance on the drive side
Weigth : 1550 g