[NSRCA-discussion] [SA] Help: Elevator Setup on JR10X

[Dave Michael]

The suggestion that I am getting most often is that the issue stems from 
using ATV/End-Point in excess of 100% and sub-trims, both of which I am 
using.  I can't eliminate sub trim as I need to adjust center so that both 
arms are 90 deg to the hinge line- however, the ATV/End-Point can be 
eliminated by moving the control rod attachment point further out on the 
servo arm.

I was trying to set the plane up without 3D throws- to get the best possible 
mechanical advantage- so I am using the servo arm hole closest to the servo. 
I'll change the ATV to 100 or less and move out on the servo arm and see 
what happens.

Dave


----- Original Message ----- 
From: "Michael Glavin" <mglavin at surewest.net>
To: "'Dan Knippen'" <dknippen at sbcglobal.net>; "'Dave Michael'" 
<DavidMichael1 at comcast.net>; <mini-iac at yahoogroups.com>; "'NSRCA Mailing 
List'" <nsrca-discussion at lists.nsrca.org>
Sent: Friday, June 02, 2006 2:18 AM
Subject: RE: [SA] Help: Elevator Setup on JR10X


> Dave
>
> A curve is not available to the best of my knowledge.
>
> Look very closely at the mechanical setup. I suspect as other that 
> something
> is amiss here.
>
> Are your ATV/End-point settings the same on both channels?
>
> Is Sub-trim in play?
>
> Any time you introduce an offset such as sub-trim or an unequal end-point
> percentage you'll realize some variables in performance as compared to
> another channel without same. Careful mechanical set-up eliminates most of
> these problems.
>
> Michael Glavin
>
>
> -----Original Message-----
> From: mini-iac at yahoogroups.com [mailto:mini-iac at yahoogroups.com] On Behalf
> Of Dan Knippen
> Sent: Thursday, June 01, 2006 5:43 PM
> To: Dave Michael; mini-iac at yahoogroups.com; NSRCA Mailing List
> Subject: Re: [SA] Help: Elevator Setup on JR10X
>
> Dave,
>    I will probably doing the same thing on my next plane, but I didn't
> anticipate that problem. Yiks ! Sounds like one arm on one of the 
> elevators
> is different than the other mounted in the stab?  I'm thinking servo speed
> but everything seems fine on down Ele. ? Push rod lengths equal ? Good
> question?... Let us know what happens.
>                                    Dan k
>
> Dave Michael <DavidMichael1 at comcast.net> wrote:
>  All,
>
> I am setting up a new plane using the wing type mix (22) for an elevator
> servo on each half, plugging into the elevator and AUX3 ports as 
> instructed.
>
> Using the stick on each of the elevators coming together at a single point
> behind the rudder to check tracking. I am finding that the elevators are
> aligned at center and at full up and down elevator.
>
> I am also finding that the elevator on AUX 3 starts earlier and reaches 
> full
>
> throw earlier than the other elevator and thus tracks with greater throw 
> on
> that half than on the other half anywhere between neutral and full throw.
> This is happening with up elevator only- not down elevator.
>
> I am hoping I can set up some sort of curve one one half or the other so
> that I can match the two elevators perfectly (well, as perfectly as
> possible). Has anyone done this and what are the steps?
>
> Thanks,
>
> Dave Michael
>
>
>
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