Ochain - The new active spider for e-bike

For a smoother ride on your e-MTB, Ridewill offers you the new OCHAIN active spider for e-bikes, OCHAIN-E. Reduce chain pull and gain a new degree of freedom for a chainless feel.

Ochain was born from the intuition of an Italian engineer after seeing the victory without the use of the chain by Mulally at the UCI WorldCup 2014 (Downhill). The idea then developed into an industrial project to obtain the benefits of a chainless ride but leaving pedaling control to the rider.
The chainless ride allows the rider, among the various benefits, to experience a feeling of fluidity, an absence of pedal kickback, and improved braking performance. At the same time, the reactivity is reduced and the bike results soft.
The result was the creation of a spider with three different settings to obtain the right balance between fluidity and reactivity.

The problem of the pedal kickback is a phenomenon present in full-suspension bikes and is given by the movement of the rear suspension which causes the chain to expand, this leads to a sudden retraction of the pedals.
Ochain's design mitigates this stress by cushioning excess force directly on the traction, using springs and elastomers. It also facilitates the work of the rear suspension leaving it free to compress without encountering resistance.

The component is mounted in the central part of the crown utilizing four screws and hooks onto the bottom bracket. It is mainly composed of Ergal, an aluminum alloy particularly resistant to stress, and inside it contains the steel springs and the elastomers. Unlike its muscle bike counterpart, OCHAIN-E is now only available in the 9th version. The best compromise between performance and durability for e-bikes.

Considering your chainring offset it’s the key point:

BROSE:

Only one chainline for Specialized 50mm

BOSCH:

8mm= 50mm chainline = Ochain 52+Ochain rondelle kit

12.5mm= 52mm chainline = Ochain Bosch 52mm

15.5mm= 55mm chainline = Ochain Bosch 55mm

OCHAIN-E is available in five different versions, compatible with the main e-bike engines.
Find them exclusively on our store!