Date:         Tue, 28 Aug 2012 20:13:26 -0400
Reply-To:     Mike B <mbucchino@CHARTER.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mike B <mbucchino@CHARTER.NET>
Subject:      Re: Fuel Hose Clamps
Comments: To: Larry Alofs <lalofs@GMAIL.COM>
In-Reply-To:  <CA+r=JhoWy=9bTzd3r85fic586-vfTdd+DnSRxzkSgJnvzMBpLA@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 8/28/2012 7:49 PM, Larry Alofs wrote:
> Large sidecutters, small screw driver, icepick, whatever...
>
>    Has anyone actually seen a hose fail because of being "cut into" by
> an ordinary hose clamp?
>
> Larry A.
>
Yes, I have seen hoses deeply cut by worm gear hose clamps that have
open slots.  The ones that have formed ridges with no slots in the band
are the best, but are harder to find and more expensive. Another
important factor is the rounded (curled up) edges so the edge of the
band can't cut into the outer jacket of the hose.  The original Oetiker
clamps conforms to all of these features, with the additional feature of
having "self-adjusting" tension (although somewhat limited).  Screw
clamps must be manually retightened slightly every so often to
compensate for the hose taking a crush over time, or they become loose
and may leak on a high pressure connection like fuel injection lines.

Mike B.