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Thunder Tiger GT5 FBL System Thunder Tiger GT5 Flybarless Electronics |
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01-05-2012, 02:19 AM | #1 (permalink) |
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Join Date: Jul 2010
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Maiden GT5 - Crash diagnosis
Didnt go to plan.. Spooled up, put it in a hover for 2-3 secs, then it "rolled" to the right, boom strike and down she went..
Im pretty sure a link failed and it wasnt a setup issue. My initial reaction was perhaps the gain was wrong, as it was more of a rocking motion left, then right rather than a roll. If you were to drop a coin on a table they will roll around their circumference before laying flat. If it was the gain too high Im assuming it would have been oscillating during spool up and after putting the heli into a hover?? Does it sound like a link failure or did I screw something up in the setup? (Fortunately the damage is minimal as i was only 3-4m in the air... blades, boom, main shaft, boom supports..) |
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01-05-2012, 08:01 AM | #2 (permalink) |
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Have a look at the total gain on the display, if it is black numbers on a white background then that is the problem!
I found that if it is in rate mode it is like balancing on a ball if your setup is on the wild side, it really is quite a hand full. So if it is black numbers on white you will have to work out how reverse it to white numbers on black. It may be as simple as reversing the servo on the channel that you have assigned to control total gain or switching from NORMAL to T-LOCK It's not really rate mode on the swash so much as decay mode so it goes undetected on the bench! If it is not in rate/decay mode then it could well be a ball link or severe vibration! Is it on a vision?
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CustomHeliParts/KDE TRex 700N ThunderTiger X50 FBL Ely.Q Vision 90 Ely.Q Vision 50 |
01-05-2012, 08:38 AM | #3 (permalink) | |
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01-05-2012, 08:45 AM | #4 (permalink) | |
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01-05-2012, 02:20 PM | #5 (permalink) |
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That is incorrect, you just cant tell because you fly a bus! Try it on a 50 size heli with aggressive 3D setup!!!
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CustomHeliParts/KDE TRex 700N ThunderTiger X50 FBL Ely.Q Vision 90 Ely.Q Vision 50 |
01-05-2012, 03:14 PM | #6 (permalink) |
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Join Date: Jul 2010
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Thanks for the replies..
It was definitely white numbers on black background at 100%.. P-I ratio: I was using default settings as the posts ive read indicated these work quite well.. Ill fix up the heli and give it another go.. |
01-05-2012, 03:18 PM | #7 (permalink) | ||
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Quote:
2.) In rate mode you will not be able to do hands off inverted hover very close to ground. 3.) Even though i did not noticed anything, it is possible that negative/positive total gain value may change something, but definately it is not a switch between rate and heading hold. 4.) Here is a experience with something like rate mode: Quote:
Last edited by swalko; 01-06-2012 at 05:26 AM.. |
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01-08-2012, 09:41 AM | #8 (permalink) |
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Join Date: Jul 2009
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Since you had it in a hover it means your compensation direction is correct, i would check your power supply, could be a brownout reset, my friends mini titan did it twice now he replaced everything on the heli except bec so seems very likely the cause,
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01-08-2012, 09:55 PM | #9 (permalink) | |
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Join Date: Jul 2010
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Quote:
Next time ill use a dedicated rx pack instead of the BEC... Parts have been ordered. Hopefully they arrive before the weekend.. |
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