Trail Science

Knot Science

There’s a whole field of mathematics that studies knots, to explore abstract properties of idealized curves. “But that’s not what you care about if you are, for example, a sailor or a climber and you need to tie something which holds,” says Vishal Patil, a graduate student at the Massachusetts Institute of Technology whose new …

Knot Science Read More »

Lyme Disease Diagnosis

Hopefully testing does indeed get better: There is a yet another tick-borne illness to add to the list: Powassan If you are in NY, an Upstate lab tests ticks for diseases — for free: For more information on tick safety and Lyme literate doctors on Trailism see this.

Grade Calories

School grades, food grades, health grades, trail grades…elevation profiles and the speed at which they are traversed are caloric profiles. The precise relationship between how fast you walk, how steep your trail is, and how much energy you burn turns out to be less obvious than you might assume, which is why researchers at the …

Grade Calories Read More »

5 Things Jordan Crawford Learned From The Appalachian Trail

I stumbled upon Jordan’s Instagram, and soon after his website because he settled on “trail-ology” to name them both. After reading some of his posts I can see we certainly relate on some level beyond just a word. His piece “5 Things I Learned From The Appalachian Trail” is great (so are many of his …

5 Things Jordan Crawford Learned From The Appalachian Trail Read More »

Smooth Jumps and Rollers

*for big bikes In thinking about jumps and rollers I assume the safe bet is to make them smooth (not too jerky/bumpy) for bigger bikes as they have the biggest wheel base. For extra large 29ers this is somewhere near 46 inches…which led me to produce the following thought experiment: [rethought/updated, the Brachistochrone or cycloid …

Smooth Jumps and Rollers Read More »

National Hydrography Dataset

This site is new news to me, and great for some layout and design situations: Although it’s not practical or possible to always bypass the lower 1/8-1/4 of any mountain to lower the chances of hitting seeps as a result of “toe-of-slope-effect,” the site (with the help of GIS) could be used to lower …

National Hydrography Dataset Read More »

The Stair Event

Not exactly stairs on trails, but food for thought anyway. The Stair Event, is the only film on stair use and safety. It is based on the 1978 field study of spectators’ use of stairs at the Commonwealth Games in Edmonton, Canada. The Stair Event from Copycat Video Productions on Vimeo.