[NSRCA-discussion] Elev Servo's in the stab Pros vs Cons?

[Archie Stafford]

Tim,

 

I think this is 100% personal preference.  I've flown both, and flown both
in the same design, and I still prefer the DEPS system.  I am currently fly
my VF3 with the DEPS with a single 9254 Futaba heli tail rotor servo.  First
saw that servo being used by CPLR.  Only 50+ oz torque, but lightning (.04)
fast at 6V.  Once again though, this is personal preference or could be
necessary depending on your CG.  They both work great though.

 

Arch

 

 

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From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
rcmaster199 at aol.com
Sent: Monday, August 20, 2007 11:22 AM
To: nsrca-discussion at lists.nsrca.org
Subject: Re: [NSRCA-discussion] Elev Servo's in the stab Pros vs Cons?

 

Have tried all of the above methods and all have advantages anbd
disadvantages. My new design will have dual elevator servos in the stab. I
will use a pair the mini superfast, lightweight JR digitals and couple them
with 2-56 rods. The length of pushrods will be short

Matt


-----Original Message-----
From: twtaylor <twtaylor at ftc-i.net>
To: nsrca-discussion at lists.nsrca.org
Sent: Mon, 20 Aug 2007 8:47 am
Subject: [NSRCA-discussion] Elev Servo's in the stab Pros vs Cons?

I have a new secret weapon I'm building. Not having built and airplane in
many years I started looking at what type of elev push rod system to use.
I've looked at the Deps, two servos in the stab, pull pull cables and a
single push rod with a Y.

 

The pull pull seems to be the lightest and possibly the easiest way to go.
The twin servo's also seems easy but adds another servo.  I don't have the
small servo's required so that's a consideration as well. The deps seems to
be a good way but possibly the hardest of all to install. The old tried and
trued Y pushrod is what I've used for years and have always used a bearing
tube where it exits the fuse. This is a composite fuse already painted and
I'd rather not screw it up by trying to put a former for the rear of the
pushrod Like Dave has in the Focus.

 

I also am debating using the Tetra push rods for the ailerons even though
they're 2/56 push rods. We used to use them on rocket ships of the past and
I was wondering if they would be fine on this aircraft because we fly slower
now.

 

Pro's Con's?  

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