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Scorpion Power Scorpion Power
03-16-2003 04:09 PM  14 years agoPost 21
stevem

rrApprentice

Oklahoma

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FWIW - I think the main gear struts are left unglued from the main frame. It helps to allow the addemblies to flex during rough landings. The battery holder assembly keeps the gear in place.

As for tail oscilations - do you mean left to right? If so, turn down your gyro gain a bit.

Good Luck!

Steve M

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03-16-2003 04:47 PM  14 years agoPost 22
rubelcon

rrNovice

Southern California

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Dear Steve,

Sometimes it oscillates l-r, sometimes it hops. It seems that I am the only one having these problems

Anyways, neither my piccolo or hornets' oscillate in the tail, so I am wondering what else is wrong with my setup. My other Hummingbird (stock) flies perfectly, but not this one

I keep trying, and trying, and trying

Thanks for the help,

Brian

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03-16-2003 04:58 PM  14 years agoPost 23
swampd20155

rrNovice

Gainesville, FL

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Oscillations

Brian -

I haven't had the oscillation problem with my HBird and the Orion, but I HAVE had a similar wagging on my CP Piccolo with an Astro Flight 010 w/Phoenix 10 on the mains, DC5-2.4 w/HF-100 on the tail, GWS 6ch rx, and Ikarus Profi gyro. Have tried all gain adjustments on the gyro from min to max with the same effect. Not sure if the gyro is bad or what, but am continuing to try to isolate the problem. It's worst when I'm spinning up and in ground effect or when I change head speed during hover - seems to lock in fairly well otherwise. No revo mixing used, so that's not the problem. Seems to be gyro response to torque, but not sure how to stop it. May try changing rx next - perhaps the response of the GWS is too slow???

Sorry, but no relationship with the Orion - I'm pleased as I can be with my HBird setup. Now if I could only get used to fixed pitch FFF...

Keep those blades spinning!

Marsh

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03-16-2003 06:12 PM  14 years agoPost 24
stevem

rrApprentice

Oklahoma

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Just for th heck of it, swap blades with your other Hummer. I had a bad oscillation in the whole heli really and it turned out that my blades were pitched a bit too much.

Worth a shot anyway - Hope you can get it figured out soon.

I have been breaking blades like crazy the last few days and have begun to make my own fiberglass blades. I finally seem to have gotten the shape/size close and I go an break the tail rotor If I can get a good shape, I should be able to make several dozen sets of blades for about $10.00

I'm having a hard time deciding between ordering a cache of replacement parts or another Hummer - a whole new heli may be cheaper in the long run.

Steve

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03-16-2003 10:52 PM  14 years agoPost 25
rubelcon

rrNovice

Southern California

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Marsh,

Thanks for the help. I hope I can get it straightened out, Do you think I need a better battery then the stock for that orion motor?
-> I also have a simprop Acro that creates the same tail oscillation problems. It seems that everyone else in this forum using the Simprop has not had those symptoms', just me


Steve,

Which blades should I swap, the main blades or the tail rotor? I hope that gets me somewhere. With the tail rotor, I know some guys have tweaked them, put do I give them more pitch or less?

Thanks for all the help,

Brian

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03-17-2003 12:11 AM  14 years agoPost 26
stevem

rrApprentice

Oklahoma

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The main blades. Too much pitch or too little weight on the heli will result in a heli that will list off at a much lower head speed. The frequency of the blades at a certain speed can match the resonate frequency of som parts of the heli and cause it to oscillate.

Steve

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03-17-2003 10:29 PM  14 years agoPost 27
Agwardo

rrNovice

Auburn, WA

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Micro Mod ?

When you put in that motor what pinion did you use? did you have to solder caps on,if so what kind? and will it work in a hummer that is stock? Thanks for the input

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03-18-2003 01:01 AM  14 years agoPost 28
swampd20155

rrNovice

Gainesville, FL

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Micro Mod

Agwardo -

I use a 10t pinion, but found that I had to enlarge the hole in the chassis to allow the pinion I used to fit. (It's a hardened steel pinion that attaches with a 3mm set screw. Also had to file the set screw a little to make it flush with the side of the pinion.) Otherwise, my HBird IS stock, albeit flying with a Piccoboard vs. the Hummingbird board and gyro. And no caps required - must be some filtering internal to the motor.

Keep the rotating wing up on landings!

Marsh

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