Devo 10 and Walkera V450D03 Throttle

Just wondering if someone can give me a tip for my throttle problem. I'm running V5 software on my TX and when I bind my V450 Heli and throttle up from stop position, the throttle comes down as I increase past half throttle not allowing me to lift off. I think I may have a setting somewhere that isn't right. I am using standard settings on the v450 model config. and standard GUI. Any help would be appreciated. Thanks
Jim.

Can you post the model.ini you're using?

This is the ini that I copied from this site running my V450D03. Thanks for your quick response!!
name=WKV450D01/D03
mixermode=Advanced
icon=HELI.BMP
[radio]
protocol=DEVO
num_channels=7
tx_power=100mW

[protocol_opts]
Telemetry=Off

[channel1]
template=expo_dr
[mixer]
src=ELE
dest=Ch1
scalar=70
curvetype=expo
points=30,30
[mixer]
src=ELE
dest=Ch1
switch=ELE DR1
curvetype=expo
points=30,30

[channel2]
template=expo_dr
[mixer]
src=AIL
dest=Ch2
scalar=70
curvetype=expo
points=30,30
[mixer]
src=AIL
dest=Ch2
switch=AIL DR1
curvetype=expo
points=30,30

[channel3]
safetysw=RUD DR1
safetyval=-100
template=complex
[mixer]
src=THR
dest=Ch3
curvetype=7point
points=-100,-66,-33,0,33,66,100
[mixer]
src=THR
dest=Ch3
switch=FMODE1
curvetype=7point
points=100,93,86,80,86,93,100
[mixer]
src=THR
dest=Ch3
switch=FMODE2
curvetype=fixed

[channel4]
template=simple
[mixer]
src=RUD
dest=Ch4

[channel6]
template=complex
[mixer]
src=THR
dest=Ch6
usetrim=0
curvetype=7point
points=-15,-10,-5,0,18,37,55
[mixer]
src=THR
dest=Ch6
switch=FMODE1
usetrim=0
curvetype=7point
points=-55,-37,-18,0,18,37,55
[mixer]
src=THR
dest=Ch6
switch=FMODE2
usetrim=0
curvetype=7point
points=-55,-37,-18,0,18,37,55

[channel7]
template=complex
[mixer]
src=Ch7
dest=Ch7
scalar=60
curvetype=fixed
[mixer]
src=Ch7
dest=Ch7
switch=FMODE1
scalar=60
curvetype=fixed
[mixer]
src=Ch7
dest=Ch7
switch=FMODE2
scalar=60
curvetype=fixed

[trim1]
src=LEFT_V
pos=TRIMLV+
neg=TRIMLV-
[trim2]
src=RIGHT_V
pos=TRIMRV+
neg=TRIMRV-
[trim3]
src=LEFT_H
pos=TRIMLH+
neg=TRIMLH-
[trim4]
src=RIGHT_H
pos=TRIMRH+
neg=TRIMRH-
[timer1]
type=countdown
[datalog]
switch=None
rate=1 sec
[safety]
Auto=min
[gui-480x272]
V-trim=213,91,1
H-trim=86,236,3
V-trim=263,91,2
H-trim=271,236,4
Big-box=89,56,Ch1
Big-box=89,106,Timer1
Small-box=89,166,Timer2
Small-box=89,197,Clock
Bargraph=285,166,Ch1
Bargraph=298,166,Ch2
Bargraph=312,166,Ch3
Bargraph=326,166,Ch4
Bargraph=340,166,Ch5
Bargraph=354,166,Ch6
Bargraph=368,166,Ch7
Bargraph=382,166,Ch8
Toggle=210,54,1,64,128,FMODE
Toggle=248,54,2,65,129,MIX
Toggle=227,92,8,71,0,GEAR
Toggle=227,131,5,132,68,ELE DR
Toggle=227,169,4,131,67,AIL DR
Toggle=227,208,3,130,66,RUD DR
Model=290,56

[gui-320x240]
V-trim=129,75,1
H-trim=4,220,3
V-trim=181,75,2
H-trim=191,220,4
Big-box=8,40,Ch1
Small-box=8,95,Timer1
Small-box=8,133,Timer2
Small-box=8,172,Timer3
Bargraph=200,150,Ch1
Bargraph=214,150,Ch2
Bargraph=228,150,Ch3
Bargraph=242,150,Ch4
Bargraph=256,150,Ch5
Bargraph=270,150,Ch6
Bargraph=284,150,Ch7
Bargraph=298,150,Ch8
Toggle=144,36,1,64,128,FMODE
Toggle=144,69,2,65,129,MIX
Toggle=144,102,5,68,0,ELE DR
Toggle=144,135,4,67,0,AIL DR
Toggle=144,168,3,66,0,RUD DR
Toggle=144,201,8,71,0,GEAR
Model=207,40

[gui-128x64]
V-trim=55,10,1
H-trim=1,59,3
V-trim=69,10,2
H-trim=78,59,4
Big-box=2,12,Ch1
Small-box=2,28,Timer1
Small-box=2,38,Timer2
Small-box=2,48,Timer3
Bargraph=79,30,Ch1
Bargraph=85,30,Ch2
Bargraph=91,30,Ch3
Bargraph=97,30,Ch4
Bargraph=103,30,Ch5
Bargraph=109,30,Ch6
Bargraph=115,30,Ch7
Bargraph=121,30,Ch8
Toggle=75,13,1,64,128,FMODE
Toggle=84,13,2,65,129,MIX
Toggle=93,13,0,5,0,ELE DR
Toggle=102,13,0,4,0,AIL DR
Toggle=111,13,0,8,0,GEAR
Toggle=120,13,0,3,0,RUD DR
Battery=102,1
TxPower=75,1

Here is the default ini thats on my version 5 within the models file.

[radio]
protocol=DEVO
num_channels=8
fixed_id=123456
tx_power=10mW

[channel1]
template=simple
[mixer]
src=ELE
dest=Ch1

[channel2]
template=simple
[mixer]
src=AIL
dest=Ch2

[channel3]
template=simple
[mixer]
src=THR
dest=Ch3

[channel4]
template=simple
[mixer]
src=RUD
dest=Ch4

[trim1]
src=LEFT_V
pos=TRIMLV+
neg=TRIMLV-
[trim2]
src=RIGHT_V
pos=TRIMRV+
neg=TRIMRV-
[trim3]
src=LEFT_H
pos=TRIMLH+
neg=TRIMLH-
[trim4]
src=RIGHT_H
pos=TRIMRH+
neg=TRIMRH-
[timer2]
type=countdown
time=10
[safety]
Auto=min

That looks like Tom Z's model.ini for the V450D03, it's probably a good one to use. So that's probably not the source of your issue. I presume you are using it in normal mode, that is Fmode is set to 0, which gives a straight throttle curve from -100 to +100. I think the pitch curve is ok, too, and it is normal to hear the motor work a bit harder just past mid-point as the pitch begins to push against the air.

For bench testing I suggest you remove the blades... don't run it a long time with the blades off, but you should be able to see the swash movement and blade positions as you test.

Has this heli flown with a different TX recently? Have you tried this with a different battery? This battery might not be able to support the current you're drawing. If it's a new heli, your dealer/seller should be able to help; if not, these aren't hard to work on but I don't think it's a good platform to learn on.

Lastly, if you have a 100-size CP heli, you can use the same settings for channels 1-4 and 6, to get the feel for what it should be. And a 100 does a lot less damage.

Maybe ESC throttle calibration.

Thanks for the tips. The heli has been flown before with this TX. I do remember using a different battery one that was quite a bit more powerful. Like a 3600 mah with the same voltage. I did run into a problem with it as it started smoking from the battery and engine area so never used it again and, I then changed the motor to a new one (stock motor) identical to the one that was in it. The heli was only slightly used when I bought it. I do have the swash plate balanced perfectly and the blades at 0.1 both blades so it appears balanced very well. I will check to see if its in F mode as I never thought to check that before. Will figure out where to find the f mode on it. Yes, newby here at 59 years old LOL!!

Thanks Gerry, I will have a look and see where its at or just re-calibrate. Much appreciation.

Fmode is the switch on your tx. It's usually set to 0, 1, or 2. For this model, fmode 0 is normal throttle curve, fmode 1 is idle-up1 and fmode 2 is idle-up2. You want to use normal mode if you don't have experience with idle-up.

I agree this could be an ESC calibration. The ESC needs to be calibrated to the new motor. I don't know the calibration for this heli.

As a barely-past-newby myself, I think it would be wise to look into a smaller, less complicated heli. Walkera makes a 120, and the XK110 is extremely popular right now with new CP flyers. I fly a couple of 100-sized models in the garage for practice so the 250 doesn't get as many crashes!

Wow, quick response, thanks so much I will look into this throttle calibration but it was the lack of throttle that made me finally change the motor as I thought the smoke and heat may have caused some damage to the motor previously.