Taming the throttle

[kyuuki]

I want a really tame throttle responce as at the moment it seems as if even the slightest moovement makes it jupm into the air or dive for the ground.

using the pitch guage i set my low stick at -10, my mid stick at 0, and full stick at +10 ... i got that from the video finless bobs setup... is this whats causing my fast accent / decent?

i also have throttle response set to mid.. should i set this to low? so i can practice landings (really want to get this training gear off - its hard as im in hong kong at the moment and lots of storms)

do you recomend me changing my throttle curve ? its on the default at the moment

how can i tame the throttle....

Chris

[eddiemoth]

kyuuki,
Your mechanical pitch is OK and you can adjust the pitch and throttle curves on your TX to match your flying style. How did you set your TX normal pitch curve right now? If you want to set it in such a way you can land it softly, set it to like 30, 50, 75, 100. or you can increase the lowest pitch curve to like 40 depending on how you like it. But you always want to to be able to hover your heli at mid stick or above.

[kyuuki]

my pitch curve is

0 25 50 75 100

throttle curve is

0 25 50 75 100



so what should these 2 be set to to give me a nice soft lift and landing as im trying to get the landing gear off - i can land no problem but its always abit of a hit when it lands,,,

[G-MRM]

This is all a matter of choice. Some fliers who want to get into 3D later keep center stick at zero deg with +/- each side. it may just be -3 to +10 to start with but with zero at center you only have half travel left for the zero to 10.

So maybe you may be better to adjust to
+10
+7
+4
0
-3
That will spread it out for you but keep some neg if the wind catches it.
Try throttle at
100
75
50
25
0
You may have to shift the 50 to 60
Also on most TX's you can unscrew the sticks to make them longer, this is a good help and I have mine at the max.
Responce needs to be mid to high, it adjusts the speed the motor reacts to changes you make.
Hard to put all this into a post, let us know if you need more info please.
:roll:

[kyuuki]

i want to get into 3d flight later,

so what you 2 are telling me is that

throttle - keep default at 0 25 50 75 100

change pitch to 0,(30 or40 say 35), 50, 75, 100

When it comes to the manual pitch... im not sure how to get it to -3 0 +10, but i could take it down to -5 0 +5 ? that would help...

[G-MRM]

You keep mechanical at +/- 10 but change the curves on the TX only.

They are all in %, so with the stick at center, with the Tx on 50% all levers are horizontal the pitch should be adjusted to zero.

100% should be close to the max of +10 so if you only wanted +8 try say 80%, likewise -10 will be close to 0% so -3 may be about 40%.

Does this make sense to you, or get back to us. Have a read of the Tx manual on Throttle and Pitch curves, it may be clearer than I am making it !!

[kyuuki]

at the moment my swash setting is -20 which gives me this - -8 0 +6


i get what your saying... should i set the swash setting to 0 and then reajust the links? im alittle lost on that part as that needs to be fixed so i get + - the same with middle being 0

then i can change the curves

shall i also put all trims back to 0?

[G-MRM]

All swash settings should be 50%, if you have the trim knob this MUST be in center.

With sticks in center, and pitch curve at 50% servo at half travel go for zero pitch as we said before, get the +/- set up this sets the heli mechanically then you can move about with the settings on the tx. Adust links etc to get swash level and 90 deg from main shalf, mixing arms horizontal etc etc

Have a try.

[swatson144]

Yes put all trims to zero. Make sure the heli is safed TH or motor disconnected, pinion removed etc.

get your pitches and swash AFR set up to give your desired range -10 0 +10 etc. spend some time there and get it right. It's all a lot easier after so you don't have to remeber any weird settings like 12% 62% 94% is your full pitch range vice 0 50 100

If you are gonna fly in normal Vise spool up to 50% and flick in IU, I'd set the throttle curve at 0 XX 90 95 100 where XX is the highest setting you are comfortable starting smoothly with out wrapping the blades up or working too hard easing the stick. This gives you a fairly constant HS and you don't have the HS and pitch varying all the time.

Set your pitch curve in normal to be 45%, 47% 50% 75% 100% this will give you some negative and full rang of positive. You'll likely be changing it as you go as far as the 1st 2 #s remember 50% is 0 pitch. 0 is 100% negative and 100% is full positive.

I like mine setup that way I find the fairly constant HS makes landing much smoother. You could as easily change the last 3 #s in the TC to be around 75%.

Steve

[kyuuki]

if i set it at 50 there is to much swash interaction and at full and negative the slider is hitting the blocks... so i cant keep it at that.. the highest i can get it is 26

but its ll ok, at 26 i got -9 0 +9 so im only out by 1 each way.

Ill adjust the throttle and pitch curves now and see what happens.

[G-MRM]

Maybe you need to move the balls in a little on the servo arms!

[kyuuki]

no can do they are in as far as possible without rubbing the heli, - hitec servos.

[kyuuki]

i had alittle play and i went with a pitch curve of 20, 40, 50 ,60 ,80 with that i get -5.5 0 +5.5 and that curve should give me a soft liftoff and landing ...?

[kyuuki]

should i leave the throttle curve as it is?

[G-MRM]

Sorry for the late reply we have been fiying !! So nice here today, warm with little wind :lol:

Your top end may be a little low at 5.5, if you were always flying inside with out wind it would be Ok ish but with wind or you doing something wrong and you want a fast pullout it may be too little.

Maybe try it to +7.5 I just dont want you to be low on climeout !!

Hovering should be with about 60-65% throttle but get use to the sound, you should be able to tell if it boggs down. too slower head speed will make ESC and motor hot !

I bought a tacho, they help with settings but make sure you anchor the heli down !

[kyuuki]

ok i changed it to 7 0 7 and jsut took it out for a test flight, the throttle is much tamer now guys! thankyou for your help.

The only minor issue i had was one of the blades was tracking higher than the other so will have to adjust some links (didnt look like a weight problem.) plus it was abit windy which made the helicopter rise and fall out of my control so was abit dangerous today... maybe the weather will be better later.

[eddiemoth]

kyuuki,
I am glade you got it tamed down. Trex 450 is a little more twitchy than X400 because of the flybar but it will help you in the long run when you fly other helis. It will be easy for you.

Because it is windy outside, why don't you take the time and get the blades tracked. You’ll see a big difference when everything is tracked and balanced. Just put the color tapes on one of the blades and run it on the ground to check it. I normally hover it at my eye level and I would see if the blades out of track and then just adjust the pitch control links.

Bad weather is RC heli pilots enemy and you like it or not - it is coming. I am now getting my Blade CP ready for this coming Winter.

[G-MRM]

Glad it is better for you, it takes a while when there is so much to adjust !!

All good ground work for the next heli !!! :lol: