Schlumpf mountain drive

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Ant
Posts: 281
Joined: 13 Feb 2007, 2:05pm

Schlumpf mountain drive

Post by Ant »

Does anyone know whether the Schlumpf mountain drive is suitable for use on a mountain bike?

My thinking is that fitted on to a singlespeed with maybe a 38/18 ring and sprocket then it would give a suitably low bottom and a reasonable top as the Schlumpf has a 1:1 direct and a 2.5:1 low.

I guess the real issue is whether the Schlumpf is suitably robust and well sealed enough to keep the water and muck out.....

Common sense says not because surely otherwise someone would be selling them.

Anyone got any experience of this?

Thx in advance, Ant
ThomasDylan

Post by ThomasDylan »

I looked at the Schlumpf Mountain Drive FAQs, but there's nothing that specifically answers your question. There is an email address there you may like to try.

I considered a Schlumpf drive for my Birdy, but I was put off by the price (300+ Pounds fitted) and (lack of) availability. It is a rare beast.

Not many people know about the Schlumpf option, but every review I have read has been positive. Don't go for the extra actuation levers was the last advice I read. Too easy to activate unintentionally apparently...
Ant
Posts: 281
Joined: 13 Feb 2007, 2:05pm

Post by Ant »

Cheers for that, I agree that the lever looks like it would be accidentally clicked, especially when bouncing around off road.

They do seem expensive, but much cheaper than a Rohloff, and cheaper than a groupset. To me they seem ideal for off-road bikes, presuming of course that they are well sealed.

I'll try emailing the manufacturer's and will post their response.

Ant
epicurus
Posts: 22
Joined: 14 Aug 2007, 10:15am

Post by epicurus »

Sturmey Archer 3 speed hub?

Cheaper than a Schlumpf
ThomasDylan

Post by ThomasDylan »

Ant wrote:Cheers for that, I agree that the lever looks like it would be accidentally clicked, especially when bouncing around off road.

They do seem expensive, but much cheaper than a Rohloff, and cheaper than a groupset. To me they seem ideal for off-road bikes, presuming of course that they are well sealed.

I'll try emailing the manufacturer's and will post their response.

Ant


Just remembered, Kinetics are an agent for them. You might want to give them a call. I don't know of any other UK dealer, but there might be more...
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Si
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Joined: 5 Jan 2007, 7:37pm

Post by Si »

if it's a single speed and you are just after a bail out gear have you considered the double chain ring - 2 sprocket option?

use a cassette hub and just fit two sprockets, choose sprockets and chain rings so that chain length is the same (more or less) for big sprocket/little chain ring and for little chain ring/big sprocket combinations. Changing gear will mean stoping, moving the wheel slightly and re-threading the chain, but it'll be a helluvalot cheaper and lighter than a mountain drive.
PW
Posts: 4519
Joined: 23 Jan 2007, 10:50am
Location: N. Derbys.

Post by PW »

Sounds like the old Sturmey 2X2X3 cocoa tin compound, except you can run that through a pair of prehistoric Huret mechs which were wide enough to take an 1/8" chain.
If at first you don't succeed - cheat!!
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