Has anyone retrofitted a schlumpf on their strida?

[Amuro_Lee]

@fwd-bwd

http://www.schlumpf.ch/hp/schlumpf/news_engl.htm

The official price tag is 519 euros! Maybe it’s to justify the cost or to deter people from buying ATS Speed Drive, Schlumpf made this statement:

“Please notice: the internal parts were modified in order to correspond with the higher proload of the belt compared with a chain. Always ask for the original Schlumpf speed-drive made in Switzerland!”

On another Schlumpf webpage, I found the following warning:

“The belt drive speed-drive comes with a special geometry of the internals, which matches the requirements of the higher belt tension, compared with a chain. Never combine a standard speed-drive with a belt drive.”

http://www.schlumpf.ch/hp/sd/sd_engl_preise.htm

Here is the opinion of Mark Sanders about the ATS and Schlumpf versions of speed-drive:

@Mark Sanders

Yes the ATS version of the schumpf is now very strong and very similar to the Swiss schumpf, this is used on IF Mode, Strida and Carry-Me DS. Also we used this gear in the Smithfield nocturn Folding bike race - where it did perfect service - in spite of being REALLY hammered in race conditions. The only weak point on both the Taiwanese ATS AND the Swiss version is on how it is assembled by the bicycle company - it is VITAL that the main locking ring (largest ring on the LHS with 3 slots in it) is really tight, because if it is loose the whole gear can slip and then wear the teeth that grip it to the bottom bracket.