Quick hack for tie down straps- increase contact friction to improve holding power by making these simple sleeves to slip on tie downs.

Friction is a function of surface contact area, force and the coefficient of friction.  When I car-top my kayaks, these three variables are what I have to work with.

Ratcheting up the force is the simplest way to increase the holding friction.  However, this can strain and stress a boat, an expensive investment to damage! 

Commercial racks increase the surface contact area with special cradles.  Unfortunately, these are expensive and reduce the general function of the rack.

Sleeves of non-slip rubber to augment the friction easily secure my boats.  It's cheap and general, rather than brute force or elaborate racks. A more simple solution.

Step 1: Materials and Tools

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really great idea ! it will really come n handy for racing boats. they are very light weight,like a eggshell, Too muck pressure on the straps will easily crack or break the seam, there goes a$2000 boat and good luck finding a professional repair. the builders who can repair them tend to be in hawaii of hundreds of miles away, if that close. The race K1 kayaks are about 23 lbs,. i have an outrigger one man, that is 24 foot long, carbon fiber and kevlar layup, the scrunchies material also protest the gel coat.
Definitely!<br><br>As you can see, my long boat is a simple roto-mold plastic boat, but cracking up the force bends the hull shape way too much. In this case it is the cheap hull materials that are the issue. Certainly with racing boats it is protecting the expensive hull that is the concern.<br><br>BTW- although the scrunchy material is gentle on hulls, it does retain sand. For a performance, gel-coat hull, I'd slip a clean chamois between the wraps and the hull. Definitely don't want to loose the gloss!
Sorry to be off topic but what happened to the front end of your subie? I notice the ding on the front left quarter panel and the foglight cover is gone.<br><br>Nice write up!
Lets call it - calibration... an ongoing process that is slowly customizing my car. The shadow on the driver's door obscures another calibration. Tires are new, because the sidewall of the passenger front tire let go last fall, another calibration error.<br><br>All said, it's doing good (by my estimates) for 150K. Probably buy a new car next year, then drop 5K to clean up this one.<br><br>BTW- you should see my old car...
Great! It's so simple and effective I just have to say &quot;why didn't I thought about that before?&quot;
What is really surprising is how much better the grip becomes. Initially I tried to sew strips onto the straps. Didn't work well with the cam-buckles, but the hold improvement wasn't much either.<br><br>Crazy that just going simple and sloppy actually works best!
.&nbsp; <a href="http://www.youtube.com/watch?v=2K8Osz9RnvY">Brilliant! </a>
Muchas gracias!

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Bio: CrLz : Ideas, ideas and ideas - Love it when I get one hammered out and working. Seems like there is plenty of room for creativity, in ... More »
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