Re: Pick'm up trucks (Dawgs love trucks!) & SNELL

[Mark Dieck <mdieck@xxxxxxxxxxxxxx>]

Regarding the SNELL certification for full-face/flip-face helmets, I pulled this
off of Snell's website.

"Helmets may also be equipped with a chin or full face guard that pivots or flips
up for the rider's convenience. These structures are an integral part of the
helmet and are required to meet all of the test criteria for full face helmets.
These flip up face guards must always be used in their locked position, or in
accordance with the instructions from the manufacturer. Misuse of these fixtures
may diminish the overall protective capabilities of the helmet."

"Full face helmets provide a measure of facial protection in addition to the
impact protection generally sought. The principle feature of a full face helmet is
a chin bar that extends forward to cover the jaw area converting the facial
opening into a visual port. Frequently, a face shield is also provided so that the
wearer's face is completely covered.

In order to be considered a full face helmet, the chin bar must be an integral
part of the helmet structure. The Standard then tests the rigidity of the chin bar
by dropping a weight onto it at a specified velocity so as to attempt to force the
chin bar toward the interior of the helmet. The chin bar must not deflect more
than a specified amount. "

"E5. Chin Bar Test

The chin bar test applies to full face helmets only. At least one helmet in each
certification series shall be tested. The helmet shall be firmly mounted on a
rigid base so that the chin bar faces up and the reference plane is at 65 +/-5
degrees from horizontal. A mass of 5 +/-.2 kg with a flat striking face of 0.01 m
minimum area shall be dropped in a guided fall so as to strike the central portion
of the chin bar with an impact velocity of 3.5 +/-0.2 m/sec. The maximum downward
deflection of the chin bar must not exceed 60 mm nor any component fail so as to
cause a potential injury to the wearer. "

Here is the address of the Snell page where I pulled this information.  There is a
bunch more there, including descriptions of all the tests that the run and how the
perform them.

Mark Dieck


"Sanford, John" wrote:

> SNIP
>
> On the issue of SNELL certification, my understanding is that SNELL's specs
> require a contiguous helmet shell, which automatically fails any flip-face
> lid...  Of course, I could be wrong...
>
> BikerDawg out...
>
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- --
Mark Dieck
Mesa, AZ
IBA 8482, Gerlach '00, F&C '00
Y2K Triumph Sprint ST
mdieck@xxxxxxxxxxxxxx
medieck@xxxxxxxxxxx



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