Received: from hplms26.hpl.hp.com by opus.hpl.hp.com with ESMTP (1.37.109.18/15.5+ECS 3.3+HPL1.1) id AA274039462; Wed, 8 Oct 1997 12:37:42 -0700 Return-Path: <edscott@shell9.ba.best.com-DeleteThis> Received: from mail-out2.apple.com (mail-out2.apple.com [17.254.0.51]) by hplms26.hpl.hp.com (8.8.6/8.8.6 HPLabs Relay) with ESMTP id MAA29836 for <wind_talk@opus.hpl.hp.com-DeleteThis>; Wed, 8 Oct 1997 12:37:42 -0700 (PDT) Received: from scv1.apple.com (A17-128-100-139.apple.com [17.128.100.139]) by mail-out2.apple.com (8.8.5/8.8.5) with ESMTP id MAA33708 for <wind_talk@opus.hpl.hp.com-DeleteThis>; Wed, 8 Oct 1997 12:14:43 -0700 Received: from [17.197.20.103] (scoted2.apple.com [17.197.20.103]) by scv1.apple.com (8.8.5/8.8.5) with SMTP id MAA24342 for <wind_talk@opus.hpl.hp.com-DeleteThis>; Wed, 8 Oct 1997 12:14:39 -0700 Message-Id: <199710081914.MAA24342@scv1.apple.com-DeleteThis> Subject: Re: Tendon U-joints Date: Wed, 8 Oct 97 12:15:00 -0700 X-Sender: edscott@shell9.ba.best.com-DeleteThis X-Mailer: Claris Emailer 1.1 From: Ed Scott <edscott@best.com-DeleteThis> To: "Wind Talk" <wind_talk@opus.hpl.hp.com-DeleteThis> Content-Type: text/plain; charset="US-ASCII"
>I think this is actually a problem with all the old-style tendon bases,
>regardless of how much they have been used. The cup at each end of the
>tendon is made out of plastic on the older ones, not metal like the
>most recent edition.
>
>The reason this is bad is when you land a big jump, especially if you land
>flat, there is a LOT of force compressing that tendon lengthwise. As
>it gets shorter, it gets fatter, and my opinion is that it can get so
>fat that it bursts the plastic cup that holds its end.
>
The tendon itself severed (sheared) though the screw-hole. Both upper
and lower halves of the cups and the base on mine were metal.
-Ed
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