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Can Too High Gears be Lowered on SRAM Dualdrive?
In ,
bugbear tweaked the Babbage-Engine to tell us: Dave Larrington wrote: In , Peter Clinch tweaked the Babbage-Engine to tell us: Artemisia wrote: Peter Clinch wrote: It's worth noting that this is only a problem on /seriously/ steep hills (see http://en.wikipedia.org/wiki/Koppenberg). But with muddy tracks it's quite easy to run out of traction. At which point you get off and push... My hill is seriously steep. How seriously? Koppenberg is famously difficult for /professionals/. What's the actual gradient? There should be no trouble with traction on a typically surfaced 20% hill, and those are very unusual. Koppenberg is about 20%; the problem is that there is sand between the cobblestones, so if the rear wheel gets into a longitudinal gap, you are stuffed. I've done 25% a few times, most notably Bushcombe Lane: Longstaff "double drive" sounds helpful here. Not if the trike in question is a recumbent with a single rear wheel, thobut :-) I've got a Ken Rogers upright trike with 2WD, but have yet to use it in anger, on account of it having no brakes. -- Dave Larrington http://www.legslarry.beerdrinkers.co.uk External Transparent Wall Inspection Operative. |
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#22
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Can Too High Gears be Lowered on SRAM Dualdrive?
In article , Dave Larrington wrote:
bugbear tweaked the Babbage-Engine to tell us: Dave Larrington wrote: Koppenberg is about 20%; the problem is that there is sand between the cobblestones, so if the rear wheel gets into a longitudinal gap, you are stuffed. I've done 25% a few times, most notably Bushcombe Lane: Longstaff "double drive" sounds helpful here. Not if the trike in question is a recumbent with a single rear wheel, thobut :-) That depends on whether the single rear wheel is the (only) driven one :-) http://www.eland.org.uk/s327.html http://www.trike.ru/en/english.phtml |
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