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05-14-2012, 06:25 PM | #321 (permalink) | |
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Quote:
Post your throttle and pitch curves. Use a pitch gauge to check how many degrees of pitch you are getting at full stick. |
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05-14-2012, 06:40 PM | #322 (permalink) |
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I am getting off work in an hour I will check and post it thanks.
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To fly and not crash is like not flying at all. |
05-14-2012, 09:25 PM | #323 (permalink) |
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Yes check your pitch at full throttle. It shd show around 10-11 +ve degree. If you have good pitch but you can only still hover at the same altitude, I think the problem might be in your tx settings for the Turnigy 9x. If any of your buddies have a head speed measuring device,, use that to check your headspeed. If the head speed is too low, it could be your throttle curve or expo/dr setup in 9x setup wrongly. As I understand, FM does not influence your throttle curve as channel 3 of the Turnigy 9x is not plugged into FM.
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05-14-2012, 09:31 PM | #324 (permalink) |
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Hello I got your request and am home now I shot 1 short video, I hope this helps.
http://m.youtube.com/index?desktop_u...?v=v85SJ4V-btI And also the blade pitch with sticks at mid stick are level with swash plate. I don't have a pitch Gage.
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To fly and not crash is like not flying at all. |
05-14-2012, 09:41 PM | #325 (permalink) |
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Join Date: Oct 2011
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Actually I myself need some help in stabilizing my heli while hovering. If any of you can recall, I did at one time solve the problem of my heli doing a rock n roll motion forward n backwards. Now the motion happens with the heli hovering well in one position, but while hovering stationery the tail boom will wag up n down repeatedly. While sometimes the wagging will stop, occasionally it will still wag. I have adjusted the FM gain n also the tail gyro gain, but it makes no difference. The rotor head does not wobble n I just recently changed the thrust bearings n main shaft bearings. It is also confirm that the main shaft rotates without any wobble. Feathering shaft r new including the dampers.
I thought I solved this problem previously by loosening the blade grip on the main blade grips, but the solution only solved this problem for a short while n now the heli is doing a rock n roll anytime I hover. Pls advice, as I do not want to go buy the full Align headset which cost a lot of $$$$. Thx |
05-14-2012, 10:22 PM | #326 (permalink) | |
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Join Date: Oct 2011
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Just to share with you my pitch curve setup, at zero throttle, my main blades are at around -ve 4 degrees pitch. At midway range for throttle stick, pitch is around +ve 3 degrees. At full throttle, my blade pitch is at +ve 12 degrees. Of course you can control the sensitivity by using DR or dual rates so that the heli does not be too responsive for newbie pilots like me. I fly around 75% of my maximum throttle using EXPO/DR settings on my Turnigy 9x Tx with ER9x firmware upgrade using dual rates. To make a heli fly upwards, there are two things: your blade angle (pitch) which pushes air downwards n gets the heli into the air n the speed the blades are rotating. At zero pitch, how fast the blades rotate the heli will never fly. At +ve pitch 1-2 degrees, your heli would just hardly taking off even at full throttle. I assume your blade pitch might be around 2-4 degrees at full throttle which does not provide enough lift. Go invest in a pitch gauge or go borrow one. I don't know how you can build a heli without knowing what your blade pitch is. Try the above n let us know if your heli flies higher. |
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05-14-2012, 11:52 PM | #327 (permalink) | |
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To fly and not crash is like not flying at all. |
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05-15-2012, 12:40 AM | #328 (permalink) |
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Join Date: Oct 2011
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Jay, the reason I upgraded to ER9x was becoz it has more functionality. Furthermore the firmware is regularly updated by a dedicated community, hence u can get updates very frequently. The firmware provides almost endless configuration n things like having 9 point throttle curves is amazing (even the Dx6 has only 5 I think). There is so much extra settings that it makes the original 9x firmware look lame. The ability to have up to 16 virtual channels n switches makes the 9x Tx really customizable. However, the downside is it is not as intuitive as the 9x firmware n there is no fail safe settings. But other than that, the ER9x turns what is already a good Tx to be an even better one.
With ER9x, pairing it with Flymentor took some experimenting work which resulted in the settings shown on my previous post. However, the ability to for example have countdown timer start when you push up your throttle stick, ability to fix the switch error of the original firmware when the Tx was switched on, the ability to program the Tx to default certain switches like throttle cut to be off by default, the ability to allow sub trims to be programmed fine n superfine settings, the ability to have telemetric view of Tx status, ability to recalibrate all sticks and knobs, ability to assign a beep when your knobs are centered are a few of the things you can get by upgrading to ER9x. However I would suggest you solve your heli problem first before upgrading. Last edited by batman72; 05-15-2012 at 03:54 AM.. |
05-15-2012, 12:43 AM | #329 (permalink) |
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Ivor, In heli all it is set to 100 in control tab for travel. My throttle curve is set to 0,25,50,75,100 my PIT Curve is 50,55,62,75,100 in my TX.
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To fly and not crash is like not flying at all. |
05-15-2012, 12:47 AM | #330 (permalink) | |
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Quote:
__________________
To fly and not crash is like not flying at all. |
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05-15-2012, 03:26 AM | #331 (permalink) |
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Join Date: Oct 2011
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The videos n all related files can be found on the official ER9x site.
http://code.google.com/p/er9x/ All instructions are inside. As a summary you need to:- 1. Mod your Tx. Videos are in the website. You will need the Amtel programming USB adapter to flush the EEPROM of your Tx. You will have to be good with the soldering iron though. You can buy the USB adapter from Hobbyking. It's the same adapter which programs the quad copter main board. 2. Install the drivers for the Amtel USB adapter on your PC. Drivers can be obtained from the site. 3. Install Eepe software. Also found from the site. This app allows you to backup your original 9x firmware to your PC and flush the new ER9x firmware back into the Tx. 4. Download the latest firmware binary. Make sure you save it as a .hex file. 5. Again there are videos on the website which teaches you how to flash the firmware. 6. Once ER9x has been installed, download the tutorials on how to setup ER9x for heli. Download the ER9x manual n learn how to navigate n what each menu is for. 7. Setup your heli with ER9x without FM to familiarize yourself on ER9x n how it affects your heli's servos, throttle, etc. 8. Once you understand what each menu option is for and what it does to your heli, now install FM n follow my guide on how to setup the channels. 9. Remember my setup is for the HK450GT pro with Hextronix HKT900 servos. If you have a different setup you might need to adjust the direction settings for each servo. Rule of thumb, setup the servos first n make sure it is going the right direction. You will need to experiment partly but the main focus is on setting up channel 1, 2, 3, 4 and 6 as shown in my guide. I know the mixer does not make sense like assigning channel 6 which connects to the HK450Pro's front right servo (looking at the heli from the tail) to the Throttle stick but that's how it functions with FM. Bottomline, my setup guide is assigning one servo movement for each direction of stick movement which is sort of like disabling swash mixing. Please note in ER9x, I found out that even when you select 120 for Swashtype, the three servos which controls cyclic will not function like it is suppose to using ER9x as compared by default using the original 9x tx firmware. In ER9x you still need to manually setup the mixer for each channel for the cyclic. I hope to make a video one day and upload this n share it. |
05-15-2012, 08:44 PM | #332 (permalink) |
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Ok, I took my heli out again and still at 3/4 throttle it still barely lifts. I don't have a pitch gauge but I downloaded an app.and measured and these are the results. Sitck position bottom 1.1, mid stick level, stick on top 8.5 degrees. I shot 2 quick videos. Big time differance with the upward position and downward position.
http://m.youtube.com/index?desktop_u...?v=kyJBwGQoLOg And http://m.youtube.com/index?desktop_u...?v=-cuhpx0LzrU Thanks for the help.
__________________
To fly and not crash is like not flying at all. |
05-15-2012, 10:24 PM | #333 (permalink) |
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Join Date: Oct 2011
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When measuring your pitch, please ensure your fly bar is horizontal.
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05-15-2012, 10:30 PM | #334 (permalink) |
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Join Date: Sep 2011
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Thanks for the FlyMentor post Ivor
Easy to follow how-to which saved me alot of time and now just a couple tweaks with the settings she flys great. [ame]http://www.youtube.com/watch?v=v04kO0XrQoM[/ame] |
05-16-2012, 12:47 AM | #335 (permalink) |
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I redid it making sure flybar was straight the new pitches are low stick 0 pitch, mid stick 1.1 degrees 11.69mm, high stick 8.2degrees 85.91mm.
__________________
To fly and not crash is like not flying at all. |
05-16-2012, 01:33 AM | #336 (permalink) |
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Join Date: Oct 2011
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Looks like not enough pitch to me. At full throttle, you are only taking 8.2 degrees (not sure how come u have mm as the pitch is measured from the angle of the blades to horizontal plane (flybar plane)). Hence if you have your throttle at 3/4, your pitch (assuming linear pitch curve) should be around 5 degrees which is about right for you to hover a few feet above ground. Alternatively, you might want to get a more powerful motor, one that is 3550kv and above.
If you want more pitch, you will now need to make your swatch plate go higher up the main shaft by maybe 0.5cm without moving the position of the servo arms. To do this, extend the length of your connecting link rods (those 3 metal pipes which connects your servo to the swashplate) on all 3 servos with equal length by about a few mm longer, making sure that the swashplate is still level to the ground after you have made the servo links longer. |
05-16-2012, 01:18 PM | #337 (permalink) |
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If the servo arms are at 90 degrees with the throttle at mid stick and the throttle curve at 50 at mid stick and you have 0 pitch, then the heli is set up mechanicaly set up correctly. You should not have to adjust links that is not the answer it would also put the swash out of position at mid stick.
What is the distance from the centre of the servo pivot points to the centre of the ball joints ?. Should be about 14 mm if it is less than this then move the balls out. You can also increase the amount of pitch a bit by increasing the pitch value under the control tab. Change your pitch curve to 50-62-75-87-100. Not able to watch the vids a pic may be usefull. |
05-16-2012, 01:21 PM | #338 (permalink) | |
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05-17-2012, 10:20 AM | #339 (permalink) |
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Cyclic pitch
I have a 450 clone and when setting up FM should I be setting up the cyclic pitch as well or just leave the swash setting's at 100
Dan
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