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Other › In idle up, tail holds solid!
02-10-2006 11:26 PM  12 years agoPost 1
AH-1 pilot

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Tampa, Florida

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Last night, in my friends home in Mexico, I tried turning off the DS on th Gy401 and added some delay. The wag reduced, then I decided to get the tail moving faster by switching to idle up 1 on the spectrum radio. The lil Trex maintained a nice hover within about a 5 ft space with the tail locked solid! I´m wondering if all my tail and gyro adjustments shoud have been made in the idle up1 mode from the start. Most of my flying will be in the idle up mode anyway. I drilled a hole closer to the center of the servo wheel´s center and made sure the rod in the hole had just enough room for the rod to move freely. The last hole had slop...to large for the rod. It was nice to finally experience the Trex as it was meant to be....rock solid! I´m also using a transmitter tray, and have larger control sticks..exactly how I have on my Freya with JR radio. Last week when, I hovered my new Trex, it was all over the place...was chasing the cyclic and thought this was how it was going to be. I have since, increased the cyclic throw to 60%atv, before was only 30. I also moved the weights all the way in, and will get used to it this way, b4 I decide to take the weights off,if at all. Last night during the indoor hover test, I first tried all the ranges of delay setting with DS off, when I got the least amout of tail wag, I then palyed with the gain only, looking for the best setting. I finally tried idle up1 on the spectrum and the waging stopped! Was way cool!! If I can hover in a small living room on idle up1, I feel confident I can do some inverted hovering and maintain positive control while outside. I need to try idle up1 in the DS mode, with delay at 0....and see how the tail holds compared to the DS switch to off. If the Trex will perform great with the DS switch off, I´ll just leave it off, to prolong servo life. I´m also testing with the tr control rod completly free, out of the rod support. The maximum force on the rod should be with a right nose input....against torque, but the rod is only pulling, and wouldn´t miss the rod support. I´m going to try to get some sunset pictures of the Trex tonight and will post.

I could hardly sleep, after I saw how smooth the Trex was behaving indoors,look forward to some fun with this lil bird, as a compliment to my freya. Don´t give up...you´ll enjoy the Trex!

Michael >>>>>>>>>>face after tail wag stopped

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02-11-2006 12:20 AM  12 years agoPost 2
ChrisT88

rrVeteran

FL

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If you haven't already, assign the gear channel to another switch besides the idle up switch. You may be switching between modes when going into idle up.

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02-11-2006 05:45 AM  12 years agoPost 3
Anderman

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Thornton, CO

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What is your headspeed in normal mode? Is it the same in idle up? I noticed the heli likes a lot of headspeed. I still notice on mine that if I give fast collective my tail still goes right (nose left). I am at about 72% on the gyro gain I think I will add some more to see if it will hold better.

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02-11-2006 05:47 AM  12 years agoPost 4
ChrisT88

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FL

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Anderman,

Try taking the 401 out of heading hold and putting it in rate mode. Now adust the tail linkage until the tail doesn't drift and change back to heading hold. It should hold better. If it wont stop drifting you probably have some vibrations throwing the gyro off.

With an 11t pinion and 85-100% flat throttle curve and no governor the SE tail shouldn't have any problems keeping up.

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