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.

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