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Archive for August 26th, 2010

Stopping Bike Helmet Strap Creepage

My bike helmet sports a mirror, microphone boom, and earbud, so I generally hang it from the top of the seat on my Tour Easy. There’s a convenient peg seemingly made for capturing the triangle of strap that normally goes over my ear and, up to the point where I set up this helmet, everything was good.

Helmet hanging on Tour Easy seat

Helmet hanging on Tour Easy seat

After about a week, I noticed that the buckle was grossly off-center under my chin: the straps had shifted to one side.

Come to find out that the front strap on this helmet passes through an opening across the central member, below the plastic covering. Judging from the teardown of an older helmet, Bell used double-stick tape to hold the strap in place. Applying a constant force in one direction (I’m a creature of habit, the helmet always hangs from its right-side triangle) gently pulls the strap through the passage.

Front strap passing through helmet

Front strap passing through helmet

So I cut two slabs of closed-cell foam and jammed them into the opening atop the strap, one from each side, with a screwdriver. That forced the strap against the adhesive and mechanically wedged it in place.

Problem solved!

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