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HelicopterFlybarless Rotor Head SystemsOther › Vbar sensor pads on nitro birds
12-14-2008 09:26 PM  9 years agoPost 1
tchavei

rrProfessor

Portugal

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Hi

I would like to know what type of pads you guys use on your vbared nitro birds.

Currently I'm using zeal gel (and a velcro strap over the sensor) but my tail dances a little in a hover. Tail slides and generally flying it seems to be ok though. Except in fast backwards flight where I think I can see some oscillation too. THe tail holds however the path which makes the thing even more interesting (confusing). I wonder if the zeal gel isn't too soft?

Tony


--------------------
"Perfection and patience usually walk side by side..."

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12-15-2008 01:56 AM  9 years agoPost 2
inkspot1967

rrProfessor

Cranston Ri

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I'm using the trex tape with metal plate on both my Rave and trex700e works awesome , I didn't like the zeal at all

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12-15-2008 02:01 AM  9 years agoPost 3
tchavei

rrProfessor

Portugal

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Thx Ink.

Although the zeal was working fine on my spartan somehow I feel its making the whole thing a little "spongy" with the vbar.

I just replaced it with a thick 3M gyro tape I had here (a little thicker than stock futaba tape).

I'll try it tomorrow and report back. I really hope I get those wierd movements of the tail come to an end once and for all. Its the only thing I need to do and the bird is perfect

Tony


--------------------
"Perfection and patience usually walk side by side..."

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12-15-2008 02:45 AM  9 years agoPost 4
KennyS

rrKey Veteran

Marble Falls, Tx

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I have been using the 3mm tape from Quick UK on all of my Solid G. I have it on my Rave, Trex 700, Trex 600 Vbar and Trex 500 and works really well.

http://www.quickuk.eu/thumb_800_600...jEzMi5qcGVn.jpg

Only Fine Helis, Hobbywing

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12-15-2008 12:30 PM  9 years agoPost 5
inkspot1967

rrProfessor

Cranston Ri

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sometimes you just gotta find the right tape on these its never the same even if its the same heli. weird but it happens

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12-15-2008 07:32 PM  9 years agoPost 6
tchavei

rrProfessor

Portugal

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Well I went out and did some tests in 40km/h wind with 60km/h gusts (lol). The pad I used is definitely better it seems. The tail wasn't that strange today as it was yesterday. I tweaked a little the tail settings but didn't actually get any improvment. While I was hovering around I started to look at the whole matter diferently. The tail was in fact not only moving horizontally (like a high gain gyro wag on a traditional system) but also up and down

After thinking a little, I hooked up the laptop and reduced the gyro deadzones from 8 to 6 on all axis. WOW what a difference. I know you need some deadband on nitro birds so vibrations don't misslead the gyros but too much (like in my case) will cause the strange effect I was feeling. The gyros were compensating too late because of the deadband making the whole heli wooble slightly in a hover. After reducing the deadband the hover is rock solid... well, almost. Does anybody have a magical solution to prevent the bird drifting sideways when a 60km/h wind gust hits it?

I managed a 6 second "finger off the sticks" hover in these horrible conditions. It feels kinda scary though. Its like a ghost hand is holding the heli.

Tony


--------------------
"Perfection and patience usually walk side by side..."

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HelicopterFlybarless Rotor Head SystemsOther › Vbar sensor pads on nitro birds
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