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12-20-2010 09:27 PM  9 years ago
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Supercoolheli

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Dallas, TX

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Strange things
I'm still having little problems with the Rave but i may just be over-paranoid lol. Either last weekend or the weekend before, i was noticing a little up and down play on the head. After looking around i figured out that it was the collar coming a little loose on the shaft. i flew it like that a couple times and it didn't affect anything or get worse but i did tighten it back up. I had to do this 2 times but ever since that 2nd time it's been fine. I'm now noticing something similar but i can't find the culprit. I'm now noticing a tiny click (play) forward and back (parallel to the boom). I am NOT noticing any left and right, JUST up and down, which is the wierd part. Everything i've thought of is impossible so i'm wondering if any of you guys have any ideas?

The second thing is probably just my mind playing tricks on me. This is my first FBL unit, and although i couldn't report on any significant changes, i'm sure i'm still getting used to the new feel. Someone tell me if this is the FBL playing tricks on me, but the tail kinda feels "loose" to me. Not like something is not in tight or anything like that, but when i do simple flips it seems to me that i'm seeing the tail kick around like it can't really make up its mind. I thought this might have something to do with the setup of the Total-G but it might also just be me, or the wind (all but 1 of my flights so far have been in 20-25MPH winds). Thanks for any help
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12-20-2010 09:46 PM  9 years ago
MarshallB

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Middle Arkansas

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Many things can affect the tail behavior:

How are you regulating the tail servo voltage if at all?

Check all the mechanics for looseness.
How many tail rod guides do you have installed?
How far out are you on the arm and what servo?
How high is your gain on the TG?
What head-speed are you running?
What settings do you have for the servo setup on the TG?
Are you loading it hard in the high wind?

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12-20-2010 09:57 PM  9 years ago
Supercoolheli

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i'll try to answer your questions so you can better understand

1. I checked all mechanics and everything is perfect

2. I have all 4 of the guides installed, at the correct distancs

3. I'm using a JR DS9800G and it's at 13.5mm, as per the instrucions

4. My tail gain is at 95. I was told by many that gains run high on the Total-G, and i was experiencing a left drivt up until 95 (this was a reccomended value to me by someone who was having the same problem with the drift)

5. I'm going to start working on the ESC govorner setup tonight, but currently i am running fixed endpoints with 100-85-100 on the throttle curve

6. Again, i'm using the DS 8900G and i have it selected for that exact servo on the Total-G

7. I'm not sure about what you mean by "loading it hard in the high wind" but i am not pushing it hard by any means. Most of my flying so far has been only hovering and maybe the tinyest bit of sport flying. The last couple flights i've thrown in a few simple flips but nothing fancy yet at all
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12-20-2010 10:03 PM  9 years ago
Buzzin Brian

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College Station, Texas

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The ball on the tail servo when using the Total-G on a Rave ENV should be at about 17mm from center. That is the first thing I see that I know is off in the setup.

Brian
Build it, fly it, crash it. Repeat as often as needed.
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12-20-2010 10:06 PM  9 years ago
Supercoolheli

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i didn't actually measure it just now; i was going off of what was instructed about the cyclic servos. I'll measure it in a sec to make sure
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12-20-2010 10:22 PM  9 years ago
Supercoolheli

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ok i just measured it and i am at 12-13mm out like it says for the cyclic. My mistake . I can't see how that would affect flight though? I was actually using the big round circle arm instead of the straight one pictured in the manual. Can't think of why i chose against that one. I was going by the manual picture of the cyclic servos (pictured with the big round arm) and using that exact hole for the tail servo as well (12-13mm). I have the straight arm and i guess i could just swap 'em out and see how that does. I shouldn't have to re program or change anything else right? Just wondering. And is that all it could be?
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12-20-2010 10:59 PM  9 years ago
Buzzin Brian

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The longer arm will increase the mechanical gain. Meaning you will likley have to reduce the gain in your radio. You will also need to reset the limits on the tail. Then you should be ready to run the gain up until the tail hunts, and then back it down about 5 points and you should be good to go.

I hope this helps some.

Brian
Build it, fly it, crash it. Repeat as often as needed.
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12-20-2010 11:00 PM  9 years ago
MarshallB

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Middle Arkansas

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With the increase in throw on the servo arm you will need to reset your rudder travel/end points!
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12-20-2010 11:01 PM  9 years ago
Supercoolheli

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Ok i'll do that, thanks! Do you think that'll fix the problem though? I mean, like i said, it might just be me, and there might not be a problem
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12-20-2010 11:49 PM  9 years ago
MarshallB

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That is likely your problem!
CurtisYoungblood.com
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12-20-2010 11:55 PM  9 years ago
Supercoolheli

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i would think that giving more throw would be the only change by changing the arm. If anything, i actually love how it is right now ( i don't like a fast tail). Are you sure? cause i really really can't see how else the arm affects it. I mean, all the arms are provided with all those holes for a reason aren't they?
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12-21-2010 02:32 AM  9 years ago
Supercoolheli

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anyone? Any more ideas about the tail or any ideas about the head play?
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12-21-2010 09:59 PM  9 years ago
Supercoolheli

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ok guys i'm trying to switch out the tail arm like you suggested with the straight one pictured in the manual. I made sure and the 2nd to last hole is indeed the 17mm that i need. I took it off the servo and turned on RX power to center it but i noticed that the tail servo is jittering. this is EXACTLY the behaviour i'm getting in the air so it wasn't the servo arm after all. I wonder if there could be a problem with my step down? Or could it be something else?
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12-21-2010 10:13 PM  9 years ago
Buzzin Brian

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What are you using for a step down, and how is it wired?

Brian
Build it, fly it, crash it. Repeat as often as needed.
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12-21-2010 10:39 PM  9 years ago
Supercoolheli

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Dallas, TX

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i'm using a simple 5.1V plug in diode thingy-ma-jiggy. It's not "wierd" but i'm wondering if that's why the servo is jittering? Like i said, this jittering of the servo itself is transfering directly into flight and this is what i am experiencing with the tail, not the arm length.
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12-21-2010 10:51 PM  9 years ago
Buzzin Brian

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That would for sure be suspect to me.

Brian
Build it, fly it, crash it. Repeat as often as needed.
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12-21-2010 10:52 PM  9 years ago
Supercoolheli

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Dallas, TX

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i'll look it over...i can't think of what could be the matter unless....oh my gosh i don't know that it's plugged in....nah gotta be...lol now i'm paranoid...gonna check it
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12-21-2010 10:55 PM  9 years ago
Supercoolheli

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ok it is plugged in...*phew*! Now i have no idea what could be wrong with it? Could it be something in the Total-G? I am running quite a high gain, it's at 95 right now, but i now of other people that are running theirs very close to mine and i've read places that the Total-G is common to high gains?
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12-21-2010 11:00 PM  9 years ago
Buzzin Brian

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95 is pretty high actually. Try backing it down and working your way back up and see if that helps.

Brian
Build it, fly it, crash it. Repeat as often as needed.
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12-21-2010 11:19 PM  9 years ago
Supercoolheli

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the last one i was at was 90 and i was still getting a drift. Another person told me that they experienced the exact same drift up until 90. I was at 85 then and i put it at 90 thinking i would get the same results as him. But i could still feel it ever so slightly. Definately not anything close to being bothersome in a test hover but in normal flight yes it is very annoying. I had been going up by 5's since i was at 80 so i just did it again from 90-95. are you saying that somewhere in between 90 and 95 is where i should be?
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