New DT Swiss 240 Ratchet DEG 90T 4° hub is the answer to faster freehub engagement without sacrificing strength and durability!
Click to email a link to a friend DT Swiss wanted to speed up the engagement of their signature Ratchet hub internals without sacrificing durability, so they went back to the drawing board to design an all-new 240 DEG. Inside a slightly enlarged driveside hub flange, DT fit a 40% larger diameter Star Ratchet ring so they could boost engagement to a quick 4° by increasing tooth count to 90T, without resorting to smaller, weaker, more failure-prone engagement teeth.
The new hardened steel DT 240 DEG ratchet rings are 10mm larger in diameter than their original star ratchet. That means that the 90-teeth on the Ratchet DEG ring are the same size as the 54-teeth on the upgrade Ratchet & Ratchet EXP rings. That means you get the same strength and durability, but with much faster engagement.A side benefit of the new, bigger diameter Ratchet DEG rings is that the 240 DEG hub has slightly wider bearing spacing and the hubs are easier to service.
And we rode it in mud, snow, ice, and eventually sunny blue skies, never servicing the hub beyond occasionally rinsing off the whole bikes. However, the next mountain bike wheelset that I build WILL for sure have a DT 240 DEG hub in it. I don’t ride any bikes with real pedal kickback issues, so the faster hubs with proven DT Swiss reliability will be a welcome addition to my MTB stable. And in the meantime, I think I’ll look at upgrading my current DT Swiss Ratchet & Ratchet EXP mountain bike hubs to their 54T/6.6̅° ratchets which should split the difference between the 90T & 36T ratchets I have been riding.
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