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Thunder Tiger GT5 FBL System Thunder Tiger GT5 Flybarless Electronics |
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07-09-2012, 03:01 AM | #1 (permalink) |
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Join Date: Feb 2005
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Soften colllective around centre /
Hi all .
Is there an adjustable setting in the GT5 that will allow the centre area of the stick travel on the collective pitch to be softened ? I have my idle1 feeling good around centre stick on the collective but when I up the head speed that extra 150 rpm it makes the idle2 feel too touchy around centre stick . It's very poppy which is good for some stuff but makes things like piro fliping much more difficult in idle 2 The cyclics are no trouble as i can individually adjust the expo for different flight modes as required but the collective no go . I was thinking of adjusting the pitch curve in the radio to give an expo effect around centre but my 8FG doesn't have selectable points, which i feel you would need to make an accurate adjustment of the curve to achieve what I want . Hope that makes sence . Any idea's ? cheers
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Jason Synergy E7, Goblin 630, Goblin 380 KSE, KDS chase 360,Trex 700N, Futaba 18mz. |
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07-09-2012, 06:51 AM | #2 (permalink) |
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Join Date: May 2006
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That's not really a GT5 function, it's your pitch curves in the transmitter. In the mode you find twitchy, just put a couple points in your pitch curve around 30% and 70% and move them towards center to flatten out the pitch range in that area. You may find 25/75 to be better, or even 20/80 so you get more flat range.
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07-10-2012, 02:12 AM | #3 (permalink) | |
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Join Date: Feb 2005
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Quote:
Yep looks like I can't get what I desire then , as I said T8FG doesn't allow you to add points to the pitch curve and adjusting it at the standard points of say 25 and 75 isn't going to really give the desired effect because it influences too larger area of pitch range . And I'm not buying a new radio at this stage as my T8FG super is only around 5 months old. Bugger it . I was hoping there was a way to get the desired effect by an adjustment in the GT5 but as far as I knew there was not one there , was more hoping I missed something .
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Jason Synergy E7, Goblin 630, Goblin 380 KSE, KDS chase 360,Trex 700N, Futaba 18mz. |
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07-10-2012, 06:26 AM | #4 (permalink) |
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Could you not change the 2nd and 4th points in your pitch curve, say 5 points, to soften the feel? You'd still have the same pitch at extremes, just a little smoother around center.
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07-10-2012, 06:56 AM | #5 (permalink) |
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Thread Starter
Join Date: Feb 2005
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Unfortunately I feel that adjusting points 2 and 4 enough to give a reasonable amount of expo feel around centre would make a too aggressive change of pitch where points 1/2 meet and 4/5.
It may be worth a try even so. I can picture what i think an ideal curve may look like to achieve what I'm after but don't think it's possible with the t8fg.
__________________
Jason Synergy E7, Goblin 630, Goblin 380 KSE, KDS chase 360,Trex 700N, Futaba 18mz. |
07-10-2012, 04:02 PM | #6 (permalink) |
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Join Date: Jan 2010
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gt5
Lower the feed forward, this will soften the collective.
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07-10-2012, 08:16 PM | #7 (permalink) |
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Join Date: May 2006
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feed forward only affects cyclic. I don't know the 8 much, but on the 14 we normally use a "spline" pitch curve which makes the pitch move in a straight line between the selected point settings. It does however have a "curve" mode where it smooths it out between the points in a curve fashion rather than straight lines between the assigned points. I wonder if that's in the 8
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07-11-2012, 02:34 PM | #8 (permalink) |
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Join Date: Jan 2010
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Feed forward affects collective, atv affects cyclic.
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07-11-2012, 02:41 PM | #9 (permalink) |
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Join Date: Jan 2010
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Lower the feed forward to 20, the collective will feel much softer around center.
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07-20-2012, 07:13 AM | #11 (permalink) |
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Join Date: May 2006
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ail/ele ATV controls how much total cyclic pitch you achieve,..i.e. total flip/roll rate. Feed forward in the gyro adjust how much uncorrected cyclic is given before the cyclic gyros start to affect it through the PID algorithm,...i.e. how much control is fed in with a stick movement before the gyro's massage the control to achieve the desired rate. If you ever hear a machine fly where the blades fart loudly upon every single stick movement, there is too much feed forward so they are in effect approaching or surpassing the critical angle of attack of the blades . Another way of thinking about it is that every one of those blade farts, due to drawing massive ammounts of current from the packs, eliminates a few seconds of flight time the pilot would have otherwise enjoyed. It doesn't increase the roll/flip rate as the blade is basically stalling then flying again, it's not producing any more lift. The only effects are obnoxious noises and lost flight time. Yes, I know I'm in the minority, but I don't like blade farts and loud "pops". I like smooth and controlled. You don't see a good race car driver abusing the car by making it break loose around every turn and squeal the tires. It scrubs off speed and wears the tires prematurely, so there is no positive that comes from it, sort of the same as blade farts and popping stops.
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