Folding gearbox
 

Folding gearbox

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Looks interesting - could be light.


 
Posted : 17/04/2025 4:39 pm
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Praxis one shown at Seaotter?

https://youtube.com/shorts/0EkQF1e-qX4?si=6yJCUV0M_9lOD5w8


 
Posted : 17/04/2025 5:06 pm
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Yes it does look interesting and potentially light.  I can't remember where I saw it but some of the Sea Otter video coverage gave a better view of how it works and the mechanics of the gears.  I think the examples we have linked to are only four speed and more gears will add bulk


 
Posted : 17/04/2025 5:08 pm
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Soz, user error


 
Posted : 17/04/2025 5:09 pm
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Reminded me of the Browning electronic chainrings from the early 1990s?

They were on the Stumpjumper Pro bikes but never made it to the UK if I remember correctly. 🤔

 

https://www.disraeligears.co.uk/site/browning_derailleurs.html

 

 


 
Posted : 17/04/2025 6:48 pm