Been on a bit of a ride today. Took my camera, this is the Narrow Neck Plateau fire trail in Katoomba, a nice, traffic free, off road trail with some amazing scenery. It's worth doing.
The full distance, from Katoomba Station to the end and back is about 32km.
pictures:
http://web.mac.com/bnej/iWeb/Site/Narrow%20Neck.html
Now, I did this with a rigid alloy fork, 1.5" slicks at 75psi, and a 27" lowest gear. I'm not going to do it that way again. You can manage it by walking a few of the steeper and rockier hills, but it's a lot of effort in some places to keep the bike upright and moving.
OTOH it teaches you some interesting stuff about bike handling.
Lessons learned:
- You can do a two-wheel drift on sand and not fall down.
- The back can go out a long way all by itself.
- On loose surface hills, you have to have a certain amount of momentum and keep it, or you'll end up spinning the wheels and have to get off and walk.
- You need to be in a gear to let you apply power at any time. Sometimes you don't see the sand first.
- Rocky downhills hurt your wrists. A lot.
- 2L of water might not be enough on a hot day.
- It might rain even though the Bureau of Meteorology says it won't.
- Hard packed dirt is probably better than some sealed roads.
- Dirt roads are much better without vehicle corrugations.
- An 18" gear and huge knobbly tyres will get you up a hill that a 27" gear and 1.5" slicks won't.
- Dirt makes your bike dirty.
- Rain doesn't clean it.

