Cable Setup Re-Discovery

[Bob Pastorello]

Depends on who you ask, Del.... <BG>
But thanks...we all have a LOT of experience (read "screw-ups) to share!

How did we do this before the Internet ???

Bob Pastorello
rcaerobob at cox.net
www.rcaerobats.net


----- Original Message ----- 
From: "Del Rykert" <drykert at localnet.com>
To: <discussion at nsrca.org>
Sent: Sunday, July 18, 2004 8:38 AM
Subject: Fw: Cable Setup Re-Discovery


> Bob is a great asset to the list and pattern community as many are. Thanks
> Bob.
>
>         del
>
> ----- Original Message ----- 
> From: Mike Austin
> To: discussion at nsrca.org
> Sent: Sunday, July 18, 2004 10:54 AM
> Subject: Re: Cable Setup Re-Discovery
>
>
> Bob, Thanks for pointing this out as I for one have been fighting a
similar
> situation with my Entropy. I've rechecked all my measurements and servo
> connections but never thought this might be a problem.
> BTW, the bearing change on my OS 140RX went smooth as a whissle using the
> instructions on your web page.
>
> Mike
>   ----- Original Message ----- 
>   From: Bob Pastorello
>   To: NSRCA
>   Sent: Saturday, July 17, 2004 5:52 PM
>   Subject: Cable Setup Re-Discovery
>
>
>   For the ten of us who AREN'T at the Nats, I thought I'd share a
> re-discovery.  Still trimming on the Aries, and seemed to have differences
> in inverted snap recoveries from upright, and hard inverted pushes were
> rolling and not "feeling" the same as equally-hard Upright pulls...
>       So - today - did some pretty serious measuring on the cable setup on
> the elevators....here's what I found...(reminded me of the last time I
> discovered this circa 1997-8)
>       1.  Cable tension was different on each cable during the transition
of
> rotation of the servo, particularly near the full deflection endpoints.  I
> *think* this is part due to a horizontal servo arm, rather than vertical,
> but not sure.  Anyway...
>       2.  At parts of the rotation/deflection, the cables were being
pulled
> against the rear edges of the cable guides.  Although they are exactly
where
> the plans/instructions refer to, they weren't long enough slots to permit
> the cable to be under constant, direct tension to the servo arm.  Last
time
> I fought this, it was showing up the same place - snap recoveries and hard
> pushes....
>
>   After getting this all handled, all the cables are at least under the
same
> tension, and the changes in the exit guide length did affect the total
> deflection tension....it was an interesting re-discovery.
>
>   Tomorrow I'll find out if it was all in my imagination.
>   If anyone has similar experience to recall and share, I would appreciate
> the validation!
>
>   Bob Pastorello
>   rcaerobob at cox.net
>   www.rcaerobats.net
>
>
>
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