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Old 09-21-08, 03:09 PM   #1
abreichenbach
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Schlumpf mountain drive w/rear derailleur?

I was wondering if anyone is using a Schlumpf mountain drive with a rear derailleur on their touring bike?

I've heard some people describe a "drag" or "compression", a whine, and/or a wobble when it's engaged, but they might also be using an internal hub, and maybe that's where the problem lies? I don't really know about internal hubs.

Also, do you think it's reliable and can withstand 10,000 loaded touring miles with little chance of breaking or wearing to the point where a bike mechanic would be required? I'd consider my current XT setup as meeting these requirements, if there are only a few slow-speed crashes and proper lubrication and cleaning are done while on tour.

Thanks!
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Old 09-21-08, 03:16 PM   #2
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The cost and loss of efficiency of a Schlumpf makes me question what's the point in replacing a front derailleur with a friction shifter? Front shifts are easy with that setup and almost foolproof - not much to go wrong and easily repaired replaced should there be an issue.
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Old 09-21-08, 06:57 PM   #3
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I'm interested in the Schlumpf because you can achieve extremely low gearing with it, below 15in if you want. Setting aside my reasoning for wanting the Schlumpf, I was wondering if you know about any "dragging" or noise or wobbling when its engaged. Some report that there is some, others don't mention it at all.
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Old 09-21-08, 07:17 PM   #4
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I have heard of issues related to the efficiency of the transmission when the over/under drive [depending on model] is engaged. These BB systems are used more commonly on recumbents. I'd post your questions over at Bent Rider Online. They'll be some owners who can give you some detailed feedback.
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