RE: This is troubling me..
 

Not to muddy the waters, but I don't trust Y extensions in jets and will do anything to avoid them. I lost a beautiful B-25 to a Y connector that went badand have had numerous problems with Y connectors in airplanes over the years (always caught, fortunately, by checking the control surfaces before every flight). Given a choice between a Y and using separate receiver channels, I'll do the latter every time. If your receiver lacks enough channels, then a Matchbox is the way to go.

RE: This is troubling me..
 

Ah, that's one of the keys too, I think - don't use a mix, use the "hardware" assignment to assign both channels to the same function (and stick), and use two channels in the same update "group." I wan't sure if the "grouping" of the channels was in the manual, but I know I've read about it here on RCU. Anyone remeber what the groups are or where it is in the manual? I haven't had time to look it up recently.

Bob

RE: This is troubling me..
 

Bob,

Here it is from the TM-14 Instructions:
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times New Roman"></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times New Roman"><span class="Apple-style-span" style="font-size: small;">
</span></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times New Roman"><span style="font-size: small; ">Additionally, it is imperative to note that the servo grouping</span></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times New Roman"><span style="font-size: small; ">in the FASST system differs from that of the standard G3</span></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times New Roman"><span style="font-size: small; ">PCM receivers. </span><span style="font-size: small; ">Futaba's FASST system data is transmitted in</span></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times New Roman"><span style="font-size: small; ">packets of four channels. Therefore, when utilizing the FASST</span></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times New Roman"><span style="font-size: small; ">system, channels 1-4, 5-8 and 9-12 are grouped together</span><span style="font-size: small; ">. </span></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times New Roman"><span style="font-size: small; ">Please refer to the instructions that were included with the</span></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times New Roman"><span style="font-size: small; ">software download for information on how to optimize your</span></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times New Roman"><span style="font-size: small; ">set-up for peak performance and satisfaction.<span style="font: normal normal normal 12px/normal Helvetica; "></span></span></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 7.0px Helvetica"></p><div></div>

RE: This is troubling me..
 

Wait, In order to group, the two channels must belong to the same block? I had elevator on channels 1 and 9 I believe. 1-8 are all in use.. Can you group channels 1 and 9 together?

Pete

RE: This is troubling me..
 

Seems like we're making this harder than it should be. In the 12FG don't you simply tell the radio what type of tail you have (dual elevator)and it tells you what channels to plug the elevator servos into?

That's it.

Chris

RE: This is troubling me..
 

George, thanks for the info.

Chris, yes, that's how you *should* do it from the start.

Pete, you can group channels 1 and 9 together, but you shouldn't do it that way. As the manual section George posted said, the channels are updated in groups and thus, for *maximum perfomance* and no lag, you should use channels in the same update group to "group" together in the radio for combined functions like two elevator halves. It should be a simple matter to swap two channels in the RX connections so that the 2 elevators are in the same update group. It might be a hassel to redo it this time, but then you'll know how it works and it will allow you to get the most from your radio - which really has awesome features, BTW.

Bob

RE: This is troubling me..
 

<span style="font-size: medium">Pete,
Good Luck!
http://www.rcuniverse.com/forum/js/f...ades_smile.gif</span></p>

RE: This is troubling me..
 

If commanded to move do all the servos in one group start simultaenously? If so that increases the demand on the battery for that instant vs the old sequence system where there was approx 1.5ms delay between each servo start.