RunRyder - A bit of help with the Stratus tail (Got the shakes)

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Miniature Aircraft Nitro/Gas Helicopters > A bit of help with the Stratus tail (Got the shakes)

Eyefly
Senior Heliman
Location: Charlotte, NC

I am having some difficulty with the tail on my Stratus. It has a fast twitch side to side in hover and flight. Here is my set-up:

JR 770 gyro
JR 8900 Servo

DX7 TX set to:
ATVs at 150%
Gain at 60%
Duel rates at 33%

The first issue is tail shake side to side on hover and in turns. The second issue is that the tail is slow. I am used to a faster piro rate. I would like it to be a bit crisper as well.

Any ideas will be appreciated.

Here is a pic:

http://static.rcgroups.com/forums/a...92-DSCN0046.jpg

04-13-2008 11:02 PM

junkpilot
Senior Heliman
Location: Alamogordo N.M.

Help with gyro

Sounds like too much gyro authority, reduce ATV to 100% and then start reducing the gain.
Good luck Junkpilot

When you fly JUNK it's hard to tell when you've crashed!

04-20-2008 06:47 PM

Eyefly
Senior Heliman
Location: Charlotte, NC

But the manual says to start with 150% ATV.

04-20-2008 06:53 PM

Ghostrider
Veteran
Location: San Diego, CA

I am with junkpilot, reduce to 100% and start from there.

Currently flying:
Trex 600N Pro, BW Stratus, Aurora!

04-20-2008 08:00 PM

Eyefly
Senior Heliman
Location: Charlotte, NC

Fixed! Turns out the gyro foam tape had too much flex. I put some thimmer 3M stuff on and the tail is solid now...

04-25-2008 12:31 PM

funkyflyer
Veteran
Location: Griffith, IN.

What gyro tape were you using? It would seem that you might not have nailed the problem, as the new tape is just keeping a vibration from getting to the gyro. If the vibration is still there, it is still hurting other things.

Wow, the ground was closer than I thought.

04-26-2008 10:37 PM

Eyefly
Senior Heliman
Location: Charlotte, NC

I went from a thick spongy tape to a thinner harder tape. There are no vibrations to cause the gyro to do this. I believe the old tape was too flexible and this made the gyro vibrate to create a tail movement. The tail is rock solid now. I even increased the gain. The JR770 sets up different than the Futabas that I am used to. When you read the instructions, you have a hard time believing them. ATV must be at 150%, gain is around 60%, than you need duel rates and expo.

04-27-2008 11:20 AM

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Miniature Aircraft Nitro/Gas Helicopters > A bit of help with the Stratus tail (Got the shakes)

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