How to set up the Evo for 3D

[Flymodels]

Hi guys
It`s my first time in the forum :oops:
It would be nice to have some help from the pros, :D

I have an Evo 50 with the OS50 Hyper
and all my servos are digitals and my gyro is a 401 :roll:

I would like to do some 3D with my evo, I can do loops and rolls
all the standerd stuff aerobatics,

But i tried to do some 3D and when i do a flip or inverted hover she just
dose not hold doing this
When i try to pull full negative to get her out of the inverted she just dose not come out of inverted i have to roll her out of it by doing this i have broken my Evo well this is part of the hobby i think.

it looks like not enought power or the setting is not correct,
I would like some advice on the mutter or how to set it up
it would be nice of you guys.

Just some info where i live i am the only one flying a helli we dont even have a club my country is very small so i dont have anybody to go to
thank again for all your time

thanks anyway for reading this page
all the best
Francis Hirobo adict :glasses2:

[elviswl]

EVO 50 with Hyper 50 is an awesome combo. Mate this combo up with the Muscle Pipe or the Hatori muffler and you should have more than enough power to rock the EVO.

An easy starting point is to check your max pitch range in Idle1 (max positive, max negative). If you have less than 20 degrees of pitch range you will need to do some mechanical adjusments.


Try to max your pitch settings out without binding in Idle1 (I think that I am around +10, -10 and that loads of power) . With a linear pitch curve in Idle1, center your collective stick, check to ensure that the pitch servo horn is at 90 degrees. Check to ensure that the pitch mechanics are about center if you look through the openning in the framesjust below the upper main mast bearing block. Adjust the pitch rod links (the short ones) until you have 0 degrees at center stick.
Now go to max positive, and check your pitch, next go to max negative and check your pitch. If you are not getting enough at the max limits, then you can increase your ATV or Servo Travel. Watch for bindings while doing this.

[Flymodels]

Thanks elviswl2 for the info on the pitch setup. I am currently running at 1600rpm on hover with idle1 switched on with a pitch setup of +8 to -8. I do not have a governor so would you think it would help if I got one. My exhaust is a Jeni tune muffler, would it be OK or should I get a muscle pipe 2. Thanks again. :D :D

[rob_jones]

In addtion to making sure you have enough collective travel, check your cyclic pitch also. 6 degrees is plenty.

You can remove the weights from the flybar paddles which will help. There is a brass weight and a lead weight in each paddle. I took them both out and it livened things up a little with no bad reactions (I was afraid it would make the heli pitchy in forward flight, but it doesn't). And you can make sure the flybar ratio is in the "High Mobility" setting. The manual explains how to do that, but if you don't have the manual, post here and I can explain what to do.

[rob_jones]

I am currently running at 1600rpm

Bump that up to at least 1850. 1600 is really low for the EVO. :shock:

[elviswl]

pitch setup of +8 to -8



Try to adjust your servo travel to get at least +10 and -10.



-elvis

[Flymodels]

Thanks elviswl2 & bimmerM3 for the reply and your help.
I will try these setups and let you know.
If I use a throttle jockey and set it up for 1850 rpm this should not change regardless of pitch movement?
In which idle up 1 or 2 or both?
Thanks again :D

[rob_jones]

Thanks elviswl2 & bimmerM3 for the reply and your help.
That's what it's all about! :mrgreen:

f I use a throttle jockey and set it up for 1850 rpm this should not change regardless of pitch movement?
Correct. The idea of a governor is to maintain a constant main rotor RPM (within the limits of the engine, of course). However, you MUST have a proper throttle curve in place when using a governor. For one thing, if the governor ever fails, you need a throttle curve as a backup. Additionaly, in the case of the Throttle Jockey, the governor won't engage until the main rotor speed reaches the preset RPM. In other words, if you set the Throttle Jockey for 1850, but your throttle curve only gets the RPM to 1700, the governor will not engage. It has to be able to reach 1850 without the governor. I have my throttle curve set to give a slightly higher head speed so I know the governor working because I can hear it slow down a little. Also, if it ever fails I'll be able to tell, but still continue the flight.

In which idle up 1 or 2 or both?
I have mine set for no governor in IDLE 1 so I can fly around to test engine tuning. Once I'm happy with the tuning, I switch into IDLE 2 which turns on the governor. Some people prefer to use IDLE 1 and IDLE 2 to have different head speeds. It's just up to personal perference.

[Flymodels]

hy guys

I check the pich travel and i only had +8.5 & - 7,
on idel up 1 she was running at 1650,
I also checked the cyclic pitch and 1 had a deflection of only 4 degrees, :?
Another thing i had not placed in the right place was, :?
The Mixing arm mounting position mine was on (Autostability type) :shock:

Well i must say you guy realy no the stuff :noteworthy
I would like to try to do some 3D with out the jockey :!:
I am trying to by one on ebay wish me luck :shock:

Just to round things up i am very pleased with the support of all the guys this has been like i sed before my first time in the forum and i just dont no how to thank you all :hug:
Just keep it up nice to have good friends and support some times.

[rob_jones]

You can thank us by 3Ding the snot out of that EVO! :wink:

I think your setup explains why your weren't getting the performance you want. Make the changes we discussed and it'll be like a whole new helicopter.

You can fly it just fine without the Throttle Jockey. It is nice to have, but not required. If you take the time to properly set up your throttle curve, the only real benefit the governor will have is to prevent overspeeding the rotors. The other benefit is that you won't have to mess with any throttle to cyclic and throttle to rudder mixing. But you can fly it just fine for now without the governor and wait until you find a deal on one.

[Flymodels]

Hi guys
I have been trying to setup pitch to -10 to + 10 but the movement range of the colective pitch lever will not let me get more +/-8 as it hits the frame at it's limit,
Any ideas on the lenghts of the control rods that might help to get the -10 to +10.

Thanks

[rob_jones]

Do you have 0 degrees at the mid-stick position? Turn on your radio and go the pitch curve menu. Make sure that you put the stick at exactly the 50% position and that your pitch curve value is also 50%. Then make sure the servo arm is exactly 90 degrees (if it's not, and you can't get it lined up, use the subtrim menu to adjust it - be sure to keep the stick in the same position).

Now, adjust your linkages so the the blades are at 0 degrees with the stick at the 50% postion. If you do this, you will get +10/-10 with the pitch lever bottomed out at each end of its travel.

[Thebignickey]

do you have the bolt going into the bottom hole on the main shaft make sure it is that is probably your problem

[Flymodels]

Thanks guys
I will check it and get back to you

:)

[Thebignickey]

did you get your heli fixed

[Flymodels]

Hi Guys
First thing first you were both right, my setup was wrong both on the main shaft and pitch servo setting. :oops: Over the weekend with the help of a friend I was able to setup the head speed as follows, NORM 1600rpm, IDLE UP 1 1700rpm and IDLE UP 2 1850rpm on the hover :D but due to high winds I was unable to put it to the test or like you guys would say ROCK THE EVO. :( I am waiting for the weather to improve and I can ROCK `n` ROLL it. :glasses2:

Thanks againg and as soon as I test fly it I will gladly let you know. :lol:

[Thebignickey]

glad we could help you out you will enjoy the evo it is great

[rob_jones]

glad we could help you out you will enjoy the evo it is great

Ditto! :glasses2:

[Flymodels]

Hi Guys
Just a few lines to let you know how the weekend flying went. Thanks to your great help I have been able to put the EVO through some mild 3D flying and was very impressed with the way the EVO performed. :)

Though I have found that it has a tendancy to be a bit twitchy around the centre and lacking in responce at the extremes.

This is my radio setup
Tx JR PCM9X
Rx JR R770 PCM
Gyro/Tail Servo GY401/S9254
Aileron & Elevator JR DS811 with -30% Expo
Pitch Hitec HS 5475S
Throttle Hitec HS 5475S
Is this alright or do I need to change any particular servo :?:

[Thebignickey]

what paddles and blades are you running i dont know the jr stuff to well how fast and how much torque do they have on your servos

[rob_jones]

The 811's are mid-grade digital servos. They are good, but not particularly strong. I got this from the servo chart above:

Hitec HS 5475: 61oz-in torque on 4.8V, 76oz-in on 6V - .23 sec/60 degrees on 4.8V, .18 sec on 6V

JR DS811: 54oz-in torque on 4.8V, 66oz-in on 6V - .18 sec/60 degrees on 4.8V, .15 sec on 6V

I've used 811's without any problems, but they may not be the best choice from hard 3D.

Also, 30% expo seems like kind of a lot. Are you using negative expo? If so, that would explain the twitchiness around center and numbness at the extremes. JR and Futaba expo work opposite. On JR, negative expo will make it more sensative around center, positve expo will make it less sensative around center.

Try about 15% positive expo and see how that does.

[Flymodels]

Hi Thebignickey
I am using standard paddles with all weights removed. Any sugestions. :)

Hi BimmerM3
Thanks for the info, I did have it negative :oops: so I will changr it too positive and let you know when i have tried it. :)

[rob_jones]

I bet you'll like it better after that! :D

[Thebignickey]

ya the expo is the trick fix that and you should be golden i but the wite ma paddles on my bird and it was twitchy shaved of the front the tey are golden but the stock ones with out the weights will be fine just fix your expo and the should be the trick i knew the two were opposit but i dont use expo so i was not sure wich was wich hope that fixes it up for you glad rob knows what it is

[Flymodels]

Hi Guys
I am Back :lol:

Hope flying has been o.k. :noteworthy

I have been having some problems with the motor i
don`t have an mp2 i have a genny tune pipe and the heli tends
to loose power,
sow i have changed to tunepipe i have yet to try it will let you posted[/img]