Rinlers Method

Video

Rinlers were invented for instant lace up like you see also for instantaneous tightening and loosening.

Theory & Practice

For instance lace up you have to reduce friction. Let's take a pair of boots.

Yellow-Black Lace

Replace black lace with yellow-black lace for visibility. Left boot laced by traditional Criss-Cross method. Right boot laced with Rinlers.

Traditional Criss-Cross Method

Let's check friction between lace and 12 eyelets.

Friction

Blue arrows show friction between lace and eyelet. Red arrows show friction between lace ends.

Lace Up

Let's see yellow lace friction near one eyelet named B. Pulling up lace along green arrow move point B along blue arrow and increase friction at the points B, D and E. Friction at the points D and E is kinetic friction between yellow and black lace ends. Friction at point B is kinetic friction between lace and eyelet B along red arrow. Formula for this friction is
Fk = μk * N
where μk = Kinetic Friction Coefficient,  N = Normal Force.
Normal Force is multiplication of pulling force and cosine of half ABC angle.

Friction with Rinlers

Let's check friction between lace and 12 eyelets and 6 Rinlers. There are no red arrows. There is only friction between lace and eyelets and between lace and Rinlers. No friction between lace ends.

Lace Up with Rinlers

Let's see yellow lace friction near one eyelet named B. Pulling up lace along green arrow move point B along blue arrow and increase friction at the points A, B and C. This friction is kinetic friction between lace and eyelet B and between lace and Rinlers A and C along red arrows. Formula for this frictions is
Fk = μk * N
where μk = Kinetic Friction Coefficient,  N = Normal Force.
Normal Force is multiplication of pulling force and cosine of half ABC angle.

High Boots

You can see that on every eyelet cosine equal zero because angles ABC, BCD, CDE, DEF, AFG etc. became 180 degrees after pulling lace up.

Slow Motion

On this motion you can check Rinlers method.

Actually there is shown lacing up in 0.8 sec. I suppose this is a World record!

How it works (video)

All other videos are here