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It’s one factor to simply increase pulleys or add ceramic bearings, however the brand new CeramicSpeed OSPW for SRAM Transmission goes a lot additional. Introducing two new applied sciences collectively known as Additional Drive, they intention to enhance the already sturdy direct mount derailleurs with a good more durable pulley cage.
The 2 new options are Lively Particles Remover (ADR) and ALPHA Disc, and each are designed to maintain the derailleur operating easily for longer. And the pulley cage itself provides extra materials mass than their ordinary designs, so it’s more durable.
ADR and Alpha Disc particulars
The ADR is a mud cowl that’s anchored in a groove within the pulley wheel, fully sealing the bearings. A bladed groove design actively pulls any particles away from the middle of the wheel because it rotates, too, and the design is patent pending. They are saying it’s an especially exact match that provides no drag.
However, it’s nonetheless a stable disc pulley – that’s not the duvet you’re seeing (the ADR bearing cowl is smaller, on the heart – the decrease wheel has no grooves or holes for stuff to get caught in. It’s a two-piece design, with a stiff alloy heart wheel and fiber-reinforced composite 20-tooth slender/large outer ring so that you’re not operating metal-on-metal because the chain rolls by means of.
Regardless of the bigger decrease pulley, they are saying it retains the inventory cage dimensions and chain size, so that you gained’t want a brand new chain when including it. It’s accessible with both black or silver decrease pulleys.
For comparability, SRAM’s inventory decrease Transmission pulley has 16 enamel and makes use of a slip design that lets the toothed ring spin independently of the wheel if one thing will get caught in it. CeramicSpeed mentioned their athletes have been asking for a stable wheel not a lot to forestall sticks from jamming it up, however in order that mud and crud had nowhere to build up. Significantly for grassy cyclocross programs and muddy MTB races, they are saying it’s made an enormous distinction.
The Improvement Story
What about set up?
The SRAM Transmission pulley cage includes a good tool-free elimination, simply twist it ahead and it pulls out for simple alternative. This CeramicSpeed mannequin makes use of the identical core because the inventory unit, which incorporates the stress spring and clutch mechanism. You merely unbolt the inventory cage from that core, and bolt this one on as an alternative, and it may be put in with out eradicating the derailleur from the bike.
The brand new OSPW for SRAM Transmission system matches all 4 derailleurs – XXSL, XX, XO, and GX. Claimed weight is 110g, with 14- and 20-tooth pulleys. Bearings are ceramic with chrome steel races, and it consists of spare elements and pulley oil for upkeep. MSRP is $669.
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