Need Some Help-Focus version 1

Henderson,Eric Eric.Henderson at gartner.com
Wed Jan 28 12:13:50 AKST 2004


One elevator ext'n lead and JR Matchbox makes two servos more viable for me than mix channel delays. The matchbox, and equivalent's, let you reverse one of the servos, match the centers and also adjust the end-points. Lot's-a fun.

Eric.

-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Dean Pappas
Sent: Wednesday, January 28, 2004 4:09 PM
To: discussion at nsrca.org
Subject: RE: Need Some Help-Focus version 1


Hi Mike,
Before the digitals, the matching of two elevator servos was never good enough, at least under load, until the servos were made large and heavy. With the digitals, this appears not to be the case anymore, based purely on my test flights of sevaral of other people's planes. As long as the plane you are buying CGs correctly, then go ahead.
Dean P.

-----Original Message-----
From: fishgod at pobox.mtaonline.net [mailto:fishgod at pobox.mtaonline.net]
Sent: Wednesday, January 28, 2004 2:24 PM
To: discussion at nsrca.org
Subject: Need Some Help-Focus version 1


I am getting ready to setup my preowned Focus version 1.  The previous
owner had an OS 140 installed.  I am putting a Mintor 170 in which is the
same weight.  He had installed 2 Hitec 225MG servos in the tail for the
elevator halves.  I am not a big fan of the 225MG series of servos so I
bought some mid size digital servos to replace the 225MG servos.  The more
I am thinking about it should I put the digitals in there or should I patch
it and put a bell crank in.  It seems to me to be a wash as far as weight
goes and the dual servos my even be a lighter option.  For the bell crank
system I have the weight of a larger servo, bell crank, carbon pushrod to
the bell crank, then bell crank pushrods to the elevator halves.  The two
small digital servos weigh approx 2 oz for both of them.  I don't have any
problem doing the mixing of 2 elevator servos.  So would the only deciding
factor between the 2 options be CG?  I may be over thinking this but hey
that is one of the fun things with this hobby.  Any help or advice would be
appreciated.

Michael Laggis
NSRCA 3618


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