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Pre-Eurobike: Schlumpf's new drives

Bombproof 'Treibwerk' drive for freeride/downhill, 2009 Speed-drive OK for fixies, plus versions for belt drive and eccentric BB mounting...

Posted by Peter Eland on Monday 1 Sep 2008

Schlumpf have unveiled a raft of new products to be on show at Eurobike. Their press release text, my translations:

Triebwerk: "A high performance transmission specially for Freeride and downhill. 22 mm axle with high strength cranks, designed to hard off-road use. Ratios 1:1 and 1:1.65. Shifting without extra shifter or cable by a kick of the heel, on the go or when stopped. Lightweight removable chainrings in hardened steel, 23, 24 or 25T, equivalent to 38, 40 or 41T in high ratio. Massive bash ring. Fits without special tools in FR and DH bikes with ISCG 03 and 05. Shift button built into axle made of hardened steel. Needle roller bearings on the axle."

UPDATE: It appears EU distribution will be via Tout-Terrain in Germany. Website up with more details: here!

Speed-drive 09: new features: full aluminium housing which takes chainrings of 27, 28, 30, 32, 34, 36
or 38T, equivalent in top gear to 45, 46, 50, 53, 56, 59 or 63T. Rings exchangeable without special tools and can be combined with matching trouser protection rings. New clutch mechanism is symmetrical and is suitable for fixies, too!.

Speed-drive for belt drive: for Gates Poly Chain Carbon belts, pitch 8mm, width 10mm. Other tooth profiles available for batches of 50 or more. Belt cog is attached same was as cheainrings and fits on the standard housing! Designed to combine with Alfine hubs, which have a chainline of around 44 mm (to middle of the belt).

Eccentric mounting: all drives will shortly be available pre-installed with eccentric BBs, for eccentric BB shells with internal diameter of 51 to 56 mm. So there's practically no work involved in installation. When ordering, just specifiy the eccentric shell internal diameter and width.

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