My 500 scews out of flips?

[mak24seven]

I,m running hitec 5245's and wondered if these might be to blame, the mechanical set up seems spot on, there's doesn't seem to to much visable interaction on the bench but i have 2 strange problems the swash is perfectly level but in the hover with the tail in the heli will wonder to the right so i trim it with left aliron a few clicks and it hangs perfectly but in flat flight it will then lean to the left, with the trim setting back to where it doesnt hover it flys perfectly flat hope that made sence, problem 2 when i flip it or loop for that matter flying upright from my left to right it scews as it enters the upright position to the left once its inverted its perfect its just a bit of a sod catching it as it flips over, i guess its a mechanical problem but just wondered if anyone had had problems with the hitecs.

[LipolyGone]

Mine skews out in flips too mate & yes I'm using 5245's as I couldnt afford 9650's. Not noticed any tendancies to lean over in flat flight tho.
Martin

[Bond007]

Are you 100% sure it's not a pilot input problem ?

Get someone to watch your sticks when you fly.

Just a thought.

The trim will change from the hover to fwd flight, sometimes quite drastically. What Tx are you using ? Can you have different trim settings in the different flight modes? I use normal for hovering, idle up 1 for general flying around and big aero's, and idle up 2 for 3D, with a diffferent trim state in each mode.

Sean

[mak24seven]

mmmm! wonder if its the servo's then, maybe we just got a bad batch because a lot of people have said how good they are, i might treat it to a more expensive set and then i guess i'll no for sure appart from the 9650's is there another servo worth trying?

[LipolyGone]

No idea if theres a more suitable Digital servo.
I have one 9650 so I guess I only need two more At £40 + £6 post from kai model on ebay but to be honest the corrections I'm having to put in to keep the flip straight might actualy be helping me so I'm gonna tuff it out.
I will say tho when a freind flew the heli I saw very little correction through flip moves so what I'm seeing maybe just my uncalibrated thumbs.
Martin

[mak24seven]

Are you 100% sure it's not a pilot input problem ?

Get someone to watch your sticks when you fly.

Just a thought.

The trim will change from the hover to fwd flight, sometimes quite drastically. What Tx are you using ? Can you have different trim settings in the different flight modes? I use normal for hovering, idle up 1 for general flying around and big aero's, and idle up 2 for 3D, with a diffferent trim state in each mode.

Sean

I no for a fact sometimes i stick in some aliron with the elevator but today i made a point of flipping it as perfect as i could and each time with no dumb thumb it will tilt out, as for the trim setting your right i have 3 different options for all 3 but only fly in idle up so its trimmed at hover in idle up as well, incidently i still always alter the other 2 modes to suit.

[mak24seven]

Ment to say on my last post bond 007 i didn't realise a heli could be out of trim from the hover to forward flight so thanks for the info bud.

[mak24seven]

This has got me stumped although i gotta say i'm loveing this little heli big enough to fly and small enough not to strike the fear of god in me :-) any way i've treid to get to the bottom of this scewing tonight but i'm not a good enough bloody flyer to see or feel wots going off, to re count the problem basically when the heli gets vertical and becomes inverted it goes over on the ****, once court and leveled up it hovers inverted like a rock, it climbs out on full power nice and level although it does bank off a little on inverted climbouts, i've gone through all the linkages and its perfect with hardly any interaction vissable but i'm struggling to note if its the tail moveing out or aliron being applied i just cant work out witch one it is, is there any easy way of telling and would the two give similar symptoms?

[Tim Procter]

Hope you dont mind me saying Mark but those servos are spot on for the 500 and may I suggest practice will put things right.

Please dont be offended, Its not meant to be offensive so stay with it mate, I was doing the same and tried blaming the setup but believe me its pilot error.

Mine are coming out much straighter now after practicing this manouvre several hundred times..

[Oli]

One of our club members was having exact same probs with his 500, he is an extreemly compitent flyer (D. Osborne). He is using a cylock to fix it, which has sort of worked for him. He suspects its the servos causing the problems (hitec 5245's) and wants to plug them into the progaming thingie when he can get one to make sure they have all been set the same at the manafacturer. So your not alone! Will let you know the results if he finally gets round to it.

Oli

[jamiesawyer28041978]

Same problem with my knight sport , identical mate so your not alown. But ive just upgraded to better radio all round and waiting to try it out . Had interaction (about 2 - 3 mm from full neg to poss ) on ail and pitch i think and this is all gone completely so time will tell . Ill post back once tested. Upgraded to 2.4 ghz futaba fast 7ch.

[Tim Procter]

One of our club members was having exact same probs with his 500, he is an extreemly compitent flyer (D. Osborne). He is using a cylock to fix it, which has sort of worked for him. He suspects its the servos causing the problems (hitec 5245's) and wants to plug them into the progaming thingie when he can get one to make sure they have all been set the same at the manafacturer. So your not alone! Will let you know the results if he finally gets round to it.

Oli

Very interesting that Oli, Which makes my post look stupid above.

I must admit I had the same problem but just practiced this manouvre until it looks something like decent.

There may be more to this subject then.

[mak24seven]

Thanks for the reply's guys lets see wot comes out of it, dont worrie about that post busterboy it was funny though lol :-) its not me bud although i do need the practice mate but i fly the night back to back and i'm fine with that model.

[LipolyGone]

The programmer will adjust the centre of the servo & the end points & aleviate any interactions on the CCPM. Bit of an expensive way of doing it tho if you have to buy one they cost £80.
Kinda misses the point tho in buying cheeper servos if you ask me.
Had I known this I would have bought the 9650's.
It's since been pointed out to me by Ade that my 500 CF did indeed have interaction on the ccpm, he noticed it when he flew it but managed to fly round it with his skills.
I am using the blue anodised horns on mine & have been advised to change to a 4 armed horn & redo my servo centres to 90 degrees.
Martin
ps if anyone has a programmer & fancies helping me out I will be at charmouth all weekend

[Disc]

Mine screws out as well servos are JR 3050's here