Hello Strida fans,
this modification is intended for people, who want to share their (ST-QRS-001 equipped) Strida temporarily with another person of greatly different body height.
A body height of 1,45 - 1,75m requires the lower position of the seat pin and a height of 1,75 - 1,93 m the higher position.
The changing of the seat pin to another (upper or lower) position requires usually the un- and remounting of the saddle, the carrier and the complete “quick” release seat molding.
A new designed seat pin (containing a magnet), together with a few simple mods on the seat molding solve the problem…
The material costs are below 1 €, most expensive part is the magnet (0,22 €/each).
Weight of magnet 0,32 g, magnetic force 350 g (~50 x weight of the seat pin), from here:
Required mod on the seat molding (wood drill, low rpm):
Required mod on the QR locking mount (metal drills in 1 mm steps, mid rpm):
Function of the helping “tool” (plastic roll):
The “tool” and the small parts:
Design drawing, material: free cutting steel - every lathe operator will know what’s that
Strongly recommended: The use of anti-seizing compound and torque allen screw driver.
Function video (44 sec. 2,6Mb):
More info about this topic to be found here:
Please note: There are no spare parts for the QRS system available.
Damaging one part means you have to buy a complete new QRS set!
More tricks gladly by request…
…better pics are here: