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From: "Jeffrey Liegner, MD" <liegner@earthlink.net>
Subject: Re: L-IV Retractable Step
X-Original-Cc: billhogarty <billhogarty@hughes.net>
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I just abandoned the retractable feature, and fixed the step out in 
the airstream.  Not as elegant, but no cable or spring problems which 
I had heard much about prior to that build step.

Jeff Liegner
N334P

>Posted for billhogarty <billhogarty@hughes.net>:
>
>Am I the only one having a problem with the spring that actuates the
>locking pin on the retractable step. I have had to replace it once and now
>it has collapsed again.
>
>Any one else have this problem? Is there a replacement spring maybe using
>stronger material?
>
>Anyone knowledgeable about springs?
>
>Thanks, Bill Hogarty
>
>[Some general rules about coil springs, if the size of spring wire 
>used remains the same, if you halve the coil diameter you double the 
>spring force and 2) if you halve the number of coils per inch you 
>also double the spring force.  If you keep the number of coils per 
>inch and the coil diameter the same but double the OD of the spring 
>wire you quadruple the spring force.  <Marv> ]
>
>