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Mountain Drive or Schlumpf Planetary Drives
Hi guys,
Been putting some miles on my mtb ss and i need to replace the whole BB internals. Also thinking about moving to a rohloff or nexus geared hub. Found this on the BOB list and thought it might work nicely; http://www.kinetics.org.uk/html/mountain_drive.shtml Has anyone seen these for sale in Australia? I recon that I would spend most my time in 1:1 and a bit of hill climbing in 2.5:1. Currently running 30:18 which is too low for most the riding I'm doing now... maybe 42:18 with this Schlumpf could work...? Thoughts? cheers, Kim |
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Mountain Drive or Schlumpf Planetary Drives
"Kim Hawtin" wrote in message node... Hi guys, Been putting some miles on my mtb ss and i need to replace the whole BB internals. Also thinking about moving to a rohloff or nexus geared hub. Found this on the BOB list and thought it might work nicely; http://www.kinetics.org.uk/html/mountain_drive.shtml Has anyone seen these for sale in Australia? I recon that I would spend most my time in 1:1 and a bit of hill climbing in 2.5:1. Currently running 30:18 which is too low for most the riding I'm doing now... maybe 42:18 with this Schlumpf could work...? Thoughts? cheers, Kim My brother was thinking like this for a long while. Owned a Giant Yukon. Usual kind of 3 sp front, 9 sp rear. Ended up getting a recumbent trike. Normal derailleur gears. T. |
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Mountain Drive or Schlumpf Planetary Drives
Kim Hawtin wrote: Hi guys, Been putting some miles on my mtb ss and i need to replace the whole BB internals. Also thinking about moving to a rohloff or nexus geared hub. Found this on the BOB list and thought it might work nicely; http://www.kinetics.org.uk/html/mountain_drive.shtml Has anyone seen these for sale in Australia? I recon that I would spend most my time in 1:1 and a bit of hill climbing in 2.5:1. Currently running 30:18 which is too low for most the riding I'm doing now... maybe 42:18 with this Schlumpf could work...? Thoughts? cheers, Kim I'm a roadie and wasn't aware such gadgets existed which included gearing in the crankset. At age 40, the lowest chain cog ratio I needed was 42 x 23. Now I am nearly 61, and I find the same hills I still ride have become steeper in the last 20 years and I now need 39 x 28. This makes it just comfortable ( not too much swearing ) for climbing long hills at 10% slope. I can stand on pedals, then sit awhile, then stand and so on, and average about 9kph. I figured I'd go a bit faster if I had a higher cadence with an even lower gear and probably do my knees a favour. On a mountain bike in the rough there would be times where the slope could be 20%, no? So a much lower gear might be needed, to avoid brute strength or anaerobic power to get you up the pinch. I switched from old style 7 speed clusters with levers to 8 speed with indexed, and cassette rear hubs etc and I couldn't find a road cassette with 28 or 32, but I did find a mountain bike cassette 8 speed that would work with a Shimano SORA shift set with a deraileur with longer jockey wheel arm. I changed the 12t&11t to a 14t&13t from road cassette to get a better range of gears with the largest rear at 28t. As years pass, I will chuck out the the 1988 Shimano 600 52/39 crankset and get a compact 50/30 or whatever, maybe even a triple to get lower gears as I need them. By then the slope of the hills will be so steep that cars won't even get up. Patrick Turner. |
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Mountain Drive or Schlumpf Planetary Drives
On Tue, 27 May 2008 18:48:49 +0930, Kim Hawtin wrote:
Has anyone seen these for sale in Australia? No, but you could try asking Cheeky Monkey at Newtown(?), NSW. Rep seems to include low geaing situations/usage. |
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Mountain Drive or Schlumpf Planetary Drives
Greenspeed in Melb sells them. -- jur |
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Mountain Drive or Schlumpf Planetary Drives
Kim Hawtin Wrote: Hi guys, Found this on the BOB list and thought it might work nicely; http://www.kinetics.org.uk/html/mountain_drive.shtml Has anyone seen these for sale in Australia? Kim St Kilda Cycles in Melbourne also has a lot of internal hub gear stuff - sold me a shifter for a 7 gear nexus hub I picked up on ebay. RoryW -- Rory Williams |
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