j'ai trouvé des fournisseurs "dual-direction freewheel", "reversible freewheel"
► sturmey-archer QS-RC5 vitesses et QS-RC3 vitesses
https://www.sturmey-archer.com/en/products/detail/qs-rc3 🙂
"3 Speed Reversible Coaster Brake Rear Hub For Quadricycle"
il y a des pdf à lire sur la page et les ratios de vitesse
RC5 • Overall Range - 256%
• Gear 1 - 62.5% (-)37.5%
• Gear 2 - 75% (-)25% (Gear 1 + 20%)
• Gear 3 - 100% Direct Drive (Gear 2 + 33%)
• Gear 4 - 133.3% (+)33.3% (Gear 3 + 33%)
• Gear 5 - 160% (+)60% (Gear 4 + 20%)
When the vehicle is stationary, continue pedaling backwards and the bicycle will go in reverse. Avoid changing into reverse when driving forward or the internal parts may be damaged.
► Tomcat https://tomcatuk.org/blog/how-to-cycle-backwards/
► Berg toys use for their go-karts a BFR hub (for brake, forward and reverse)
5 years + and adults Unique BFR hub stands for "Brake, Forward, Reverse", and allows the driver to pedal forward, coast with pedals static, pedal back slightly to engage coaster brake, and continue pedaling in reverse to drive backwards.
Après pour nous, c'est toujours la difficulté du moyeu de 15 traversant…
Dans la vidéo, ce sont tous des tadpoles… 🙄
