Yorkman Posted October 26, 2009 Share Posted October 26, 2009 Is it possible to program my tx via a switch so that in flight the throttle doesn't close completely but keeps the motors spinning (electric)? Obviously needs to be switchable so motors are stopped on the ground. Cheers in advance. Martin Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 26, 2009 Share Posted October 26, 2009 Probably via a mix somehow...but why not simply use the throttle trim lever to add a little idle speed, just as in IC, or indeed, simply not close the throtttle stick fully during flying? Quote Link to comment Share on other sites More sharing options...
Bruce Richards Posted October 26, 2009 Share Posted October 26, 2009 You can use the throttle trim to achieve this. I know its not a simple as a switch but its not too hard. I am sure that in combination with programming the ESC end points you could set it up so that with the trim fully down the motor was stopped but with a few clicks of trim it would keep the motor turning..Edited By Bruce Richards on 26/10/2009 21:39:27 Quote Link to comment Share on other sites More sharing options...
Yorkman Posted October 26, 2009 Author Share Posted October 26, 2009 would be perfectly simple with the old style 'mechanical' trim levers...does anyone think digital trims are an improvement? I certainly don't. Quote Link to comment Share on other sites More sharing options...
Bruce Richards Posted October 26, 2009 Share Posted October 26, 2009 You wait ages for a Moderator and the 2 come along at the same time with the same answer. Quote Link to comment Share on other sites More sharing options...
Yorkman Posted October 26, 2009 Author Share Posted October 26, 2009 Posted by Timbo - Administrator on 26/10/2009 21:15:24:Probably via a mix somehow...but why not simply use the throttle trim lever to add a little idle speed, just as in IC, or indeed, simply not close the throtttle stick fully during flying? That's the simple answer-but not so easy in practise I found this afternoon-the Mossie has so much power that the difference between 'cruise' power (i.e. sustaining level flight) and 'idle'-descent to land in effect-is so small that reducing power to that level is a hit and miss affair to say the least...and then when one motor doesn't start with the other as you ease the throttle open again to keep on the glideslope...oh well, thanks to superglue we have a flyable model again-tho not quite as pretty as it was Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 26, 2009 Share Posted October 26, 2009 Posted by Yorkman on 26/10/2009 21:34:45:would be perfectly simple with the old style 'mechanical' trim levers...does anyone think digital trims are an improvement? I certainly don't. In some ways yes, and others no. Good in so far as they dont get accidentally moved when the Tx is not inuse, but bad for the fact that they can be so slow to operate - nothinhg worse than test flying an unproven model, and quickly realising that it needs abootful of up trim or similar...only to find yourself frustarated by the slowness of the digis to get there! Quote Link to comment Share on other sites More sharing options...
Yorkman Posted October 26, 2009 Author Share Posted October 26, 2009 Posted by Timbo - Administrator on 26/10/2009 22:04:47: Posted by Yorkman on 26/10/2009 21:34:45: would be perfectly simple with the old style 'mechanical' trim levers...does anyone think digital trims are an improvement? I certainly don't. In some ways yes, and others no. Good in so far as they dont get accidentally moved when the Tx is not inuse, but bad for the fact that they can be so slow to operate - nothinhg worse than test flying an unproven model, and quickly realising that it needs abootful of up trim or similar...only to find yourself frustarated by the slowness of the digis to get there! plus-with mech trims you can 'feel' how far you've moved it.. Quote Link to comment Share on other sites More sharing options...
Yorkman Posted October 26, 2009 Author Share Posted October 26, 2009 back on the subject-explain this one? If I mix elev-elev D-30 U-0 when I flick the mix on, up elevator movement is reduced. Ditto, aile-aile, and rudd-rudd-both move less in one direction. Why, then, if I mix thro-thro exactly the same, nothing happens? (I'm experimenting with a servo plugged in to throttle channel, not the esc's) movement of throttle servo does not change when inputting mixing values that affect the other three channels identically Quote Link to comment Share on other sites More sharing options...
Garry Pollard Posted October 26, 2009 Share Posted October 26, 2009 I must either be lucky or good at setting up the throttles on all my elec fleet ( 6 in all ) not many but all perfectly contollable. Take model to flight line with trim fully off, put model on ground and open trim to midrange, motor goes and is on tickover. Open throttle, motor speeds up and model takes off. On landing close throttle motor goes to tickover and lands. Clear flight line close trim, motor stops. All my models work this way which I thought was the norm. Maybe I am not good , but very luckey Garry Quote Link to comment Share on other sites More sharing options...
Yorkman Posted October 27, 2009 Author Share Posted October 27, 2009 Garry no luck involved-just undercarriages! Can't do that with mine because it's hand launched/belly landed and with digital trims motors can't be instantly stopped or started...however, I will give it a try, see how workable it is in practise. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 27, 2009 Share Posted October 27, 2009 The DX7 has a throttle cut button and this can be set to slowly close the trim down to zero as per a mechanical version, and then either slowly go back to midpoint ( "tickover" ) or be set to instantly return to this preset point by one touch of the lever.I cant remeber if this is the same on the wifes DX6i.... but I seem to think it isnt Quote Link to comment Share on other sites More sharing options...
Yorkman Posted October 27, 2009 Author Share Posted October 27, 2009 all I can find on the throttle cut programming is off or on.... any thoughts on my mix conundrum outlined above Timbo? Can you try that on the wife's tx and see if you get the same? Ta. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted October 27, 2009 Share Posted October 27, 2009 I beleive this is to do with a peculiarity of the spektrum mixes - throttle is treated differently. Cant remeber the whys and wherfores now, but I am sure I read about this topic on another forum some years back. Sorry Yorky...havent the time right now to play any further with it. Quote Link to comment Share on other sites More sharing options...
Yorkman Posted October 27, 2009 Author Share Posted October 27, 2009 No prob Timbo, am going to have a further play with mine, see if maybe I can do something with a rudder/throttle mix as the Mossie doesn't have rudder control. Tried using throttle trim this afternoon, which meant making a neckstrap as I never use one! Worked fine tho, even managed to find the switch and cut power completely on short finals to carry out my best 'arrival' with it so far -practise makes perfect Quote Link to comment Share on other sites More sharing options...
Yorkman Posted October 27, 2009 Author Share Posted October 27, 2009 ok, have come to the conclusion, though it's not mentioned in the manual, that the throttle can not be programmed as the 'slave' channel. If anyone knows different, please let me know! Quote Link to comment Share on other sites More sharing options...
Yorkman Posted June 20, 2010 Author Share Posted June 20, 2010 Posted by Yorkman on 27/10/2009 16:51:40: ok, have come to the conclusion, though it's not mentioned in the manual, that the throttle can not be programmed as the 'slave' channel. If anyone knows different, please let me know! Guess I'm right with this, then-as no one has been along to argue! Quote Link to comment Share on other sites More sharing options...
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