blade 450 3d not impressed.......

[stevek32]

maiden the 450 3d today set to factory newbie settings on dx6i 1st spool up massive wag so lowered gain from 77.5 all the way to 69 just to stop wag.
ok took her up about 2ft and hovered but tail wondered right ok still heavy gain so lowered half a point at a time all the way down to 66 and then to little as she drifted left. So up again to 68 put her up again about 2ft without any rudder input and watched this is where I'm stuck.
What she's doing is turning right then it will get about 30° past lift off initial point. Then goes the other way bout 30° so its a kind of slow wag but over the space of about 10secs. So she goes left, then over corrects to the right then over corrects to the left....... Etc you get the idea.
so any ideas out there is it me I'm a newbie but I know what's right and wrong and this is wrong. My 130x flies better then this.

[450man]

That sounds wierd Steve. No ideas on that one tbh.

Should have given me a call... I would have met up and we could have maidened together and had something to compare.

[stevek32]

haha sunday still good for me, no only flew it outside my front door not really space for 2 helis, lol.

back to the prob, think i may try and up my head speed to 75% at position 2 on tx and maybe flatline it at 85 from position 3 onwards,
would poss say rubbish gyro but dont know it something like a quark would work, loved the quark compared to the align...... (personal preference dont jump up and down on me)...

[tomatwalden]

.... tail wondered right ok still heavy gain so lowered half a point at a time all the way down to 66 ......

Bear in mind that tail wag and tail drift are very different. Tail wag = gain too high, tail wandering (drift)=gain too low. There should be a sweet spot between drifting and wag.

[tomatwalden]

haha sunday still good for me, no only flew it outside my front door not really space for 2 helis, lol.

back to the prob, think i may try and up my head speed to 75% at position 2 on tx and maybe flatline it at 85 from position 3 onwards,
would poss say rubbish gyro but dont know it something like a quark would work, loved the quark compared to the align...... (personal preference dont jump up and down on me)...

The gyro on the 450-3D is pretty good. The Blade 400 had a rubbish gyro - but that was one of the things they fixed on the 450-3D. Sounds to me like you've simply lowered your gain too low.

[Boggy]

try a throttle curve of norm 0/80/80/80/80 and IU 80/80/80/80/80. check your belt is tight.

[dani_r]

blade 450 3d not impressed.......

I'd get that head speed up if I were you. Around the 80%+ mark. If you want it lower then reduce the pinion size. Ideally you want to be running close to 85-100% throttle with your ideal head speed in there somewhere.

What % is it suggesting in the manual?

[dani_r]

blade 450 3d not impressed.......

try a throttle curve of norm 0/80/80/80/80 and IU 80/80/80/80/80. check your belt is tight.

Jinx

[dynoman]

Have you got enough pitch in the tail blades mechanical setup, one of our members had exactly the same problem and I set the tail pitch correctly by adjusting control rod so it was holding in rate mode went back into Heading Hold and problem cured. Manual recommends base setting of tail pitch 6 - 8 degrees of pitch as start point, to little can induce the problem you're experiencing where the torque of the blades isnt being counteracted by the tail rotor and you're making the gyro over work to try and hold the tail.

[tomatwalden]

I'd get that head speed up if I were you. Around the 80%+ mark. If you want it lower then reduce the pinion size. Ideally you want to be running close to 85-100% throttle with your ideal head speed in there somewhere.

What % is it suggesting in the manual?

Dani - the default in the manual is 77% (ie a true gain of 54%). It's the same value proposed for the 450X which I personally found too high.

[450man]

haha sunday still good for me, no only flew it outside my front door not really space for 2 helis, lol.

LOL! Perhaps I should do the same so I can iron out teething issues like this. I will fly it tomorrow anyway at the club. Yes, Sunday is still good

Could you have lowered it too much perhaps and gone through the good zone or did you do it in small steps?

[stevek32]

thanks for the replys so far guys,
manual states.....
GAIN 77.5 SW-F.MODE NORM 0 im running 68
76 STUNT 1

THROTTLE CURVE

norm 0 56.5 72.5 72.5 72.5
stunt 72.5 flat

PITCH
norm 45 51 60 73.5 91
stunt linear.

rudder travel adjust 90%...... why? all other 100%

i have upped head spead now to..... 0 75 85 90 90
throttle is same as above,
still drifting (thanks tom) but its a strange drift because it does both ways.. when it drifts right ill flick rudder and yep all good center it up then it drifts left center it and it drifts right..... leave it alone and it does it all by itself lol.

could it be mechanical as said above?, its the bnf version and all these are meant to be test flown before being shipped?

[stevek32]

LOL! Perhaps I should do the same so I can iron out teething issues like this. I will fly it tomorrow anyway at the club. Yes, Sunday is still good

Could you have lowered it too much perhaps and gone through the good zone or did you do it in small steps?

poss could have missed it as i was doing it on spool up whilst grounded as soon as i stopped the wag on the spool up took off but been a pain since lol

[450man]

Nothing to do with your problem (sorry!) but you will want to make sure that the pitch curves for both normal and stunt1 are the same above 50%. Probably linear is best above 50% so these make sense...

NORM: 30 30 50 75 100
STUNT1: 0 25 50 75 100

If the pitch curve is significantly different above mid-stick you run the risk of the heli dropping or climbing suddenly when you switch to STUNT1 mode and back again.

I imagine that they have found that the rudder is a bit too sensitive at 100% so they have softened it a bit. You will adjust that to your own liking once you start flying around. It is normal for the rudder settings to be the same on Normal and stunt however, the aileron and elevator can often be softened in Normal as you will not be doing any aggressive flying in normal.

[tomatwalden]

GAIN 77.5 SW-F.MODE NORM 0 im running 68


but its a strange drift because it does both ways.. when it drifts right ill flick rudder and yep all good center it up then it drifts left center it and it drifts right..... leave it alone and it does it all by itself lol.

That just sounds like gain too low to me. You're moving the tail and it drifts - that's just gain too low I believe! going from 77 (default) to 68 is a *BIG* jump. I'd suggest going back to something like 75 (as you know 77 is too high) and moving down in 1% steps. Remember, as the DX6i only has 50 to 100% for Heading Hold, a 1% jump on your TX is actually a 2% jump in the Gyro,

So, you've gone from 54% real (77% DX6i) down to 36% real (68% DX6i) - That's too big a drop!