[NSRCA-discussion] Futaba Tx Programming Question

Sun Mar 26 12:58:06 AKDT 2017

Thanks for the feedback. I was able to mechanically improve the situation which brought them closer together. The left wing was still out 11 up and 13 down. Pretty close though…

I took Jason’s idea, but marked the wing on painters tape equal distances from the hinge line and checked for parallelism on the servo arm. Using this method was a bit more precise and improved the situation. However, it’s still not perfect. The Tx programming gets me close enough for now.

I set my endpoints to 12 degrees up/down on both Ailerons. Then went into dual rates and adjusted to 140 (max setting). This is reverse from what I did before…

Good news, both Ailerons now track 12 degrees up/down for normal flight. I lost some throw on dual rates as the max I could achieve was 16 degrees up/down, but both track the same…

For me, not a big deal and I can live with it…

Thanks for the help.

Larry Diamond

From: NSRCA-discussion [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of john tarpinian via NSRCA-discussion
Sent: Sunday, March 26, 2017 11:41 AM
To: Jas S <justanotherflyr at gmail.com>; General pattern discussion <nsrca-discussion at lists.nsrca.org>
Subject: Re: [NSRCA-discussion] Futaba Tx Programming Question

Yes, set the geometry as symmetrical as possible for the two servos.  Go into the limit menu(12fg) and use the travel adjustments to get identical throws.

I usually set the throws to be identical in the normal flying rate and let the snap rate end up where it may.   If your real industrious and have extra servos you can try multiple servos and see which ones match up the best.   But even then I think they change with use.  Also be sure that the limit is set high enough that you don't bump up against it.

It would be nice if programmable servos could be matched up at several points rather than just the endpoints.

On Sunday, March 26, 2017 12:46 AM, Jas S via NSRCA-discussion < <mailto:nsrca-discussion at lists.nsrca.org> nsrca-discussion at lists.nsrca.org> wrote:

One thing I've found (and forgot while setting up my 3M Extra), is to match my aileron (and dual elevator) servos before installing them. Adjust the end points you want first (ATV/AFR) if needed, then match the servo arms so with the servos against each other you can set a ruler on top of the arms and bisect all the holes and servo arm screws without subtrimming. I forgot to do this in one wing and at some point have to redo it cause my numbers are all over the place. Then adjust the linkages to set the surface straight. This should get you super close without any adjustments. If they're off, I take the lazy way out and match throws in the rate I fly the most (high Ail, low elv). Not the solution you probably wanted but just another way to do it. 

Jas iP

On Mar 25, 2017, at 10:44 PM, Larry Diamond via NSRCA-discussion < <mailto:nsrca-discussion at lists.nsrca.org> nsrca-discussion at lists.nsrca.org> wrote:

I need help programming a Futaba T14SG for a 62” Acuity… I plan to use the T14SG for my sport planes (non- 2M Pattern planes). First time using this Tx.

I set the Ailerons up mechanically as close as I can to match both sides and to center the servo arm with the control surface centered. I think mechanically I am good, but not perfect.

I set the endpoints for 20 degrees up/down on both ailerons. Double checked and they track together. No problems at this point

Dual Rates for #1

*  Set up right wing up/down 12 degrees.

*  In checking the left wing it is 10 up and 14 down.

For #2 position, I use 100 for up down and it tracks 20 degrees up and down on both sides as expected with my endpoints set.

Am I not able to set up dual rate throws for each Aileron independently to ensure the throws are matched? I haven’t found the answer in the manual yet and seems I’m not setting something up correctly.

I can use my 18SZ if I need to. I don’t recall having this issue when I set up my Shinden with the 18SZ.

Larry Diamond

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