Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > Blade Helicopters (eFlite) > Blade 450


Blade 450 Blade 450 Helicopters Information and Help


Reply
 
Thread Tools Display Modes
Old 02-19-2012, 10:35 PM   #1
rdarby777
Registered Users
 
Posts: 628
 

Join Date: Jan 2012
Location: Jacksonville,FL
Default Gyro Tail Wag At All Gain Settings

I have been having vibe issues on my heli but they are finally corrected. Unfortuneately my tail wags really hard now regardless of the gain setting. I have a gy520 and usually leave it at 67% on the dx6i. I have a jr ds287 tail servo and heard that some servos dont work well with the gy520. Any help would be awesome. Thanks guys.
rdarby777 is offline        Reply With Quote
Old 02-19-2012, 10:40 PM   #2
Ah Clem
Registered Users
 
Posts: 15,105
 

Join Date: Jan 2006
Location: Alhambra, CA
Default

Make sure that the soft, black, rubber insulted wire is not strapped down, this can cause wag.

Futaba has suggested rotating the gyro 90 degrees to cure wag as well.

I have GY520's on several 450 sized ships and they work extremely well.

I am using Futaba 9650's and JR 3400/3500 tail servos.
__________________
KBDD-Team Pilot/ Team Compass/ ProStar Hobbies/ Team JR Americas/ Gens Ace Field Representative/ Robird Demo Pilot / Western Robotics Field Representative
6HV-U, Warp, 7HV,Knight Pro,Knight 3D, Atom, Atom Stretch, Odin II, 6HV, 3D Plus, Knight 50
Ah Clem is online now        Reply With Quote
Old 02-19-2012, 11:15 PM   #3
rdarby777
Registered Users
 
Posts: 628
Thread Starter Thread Starter
 

Join Date: Jan 2012
Location: Jacksonville,FL
Default

Well the rubber wire was strapped down but had plenty of slack. I will unstrap then fly and if that doesnt work I will give the gyro a 90 degree rotation and see what happens. Thanks a ton this stuff can be frustrating at times.
rdarby777 is offline        Reply With Quote
Old 02-19-2012, 11:27 PM   #4
Ah Clem
Registered Users
 
Posts: 15,105
 

Join Date: Jan 2006
Location: Alhambra, CA
Default

You might also try the metal plate and a second foam pad.
__________________
KBDD-Team Pilot/ Team Compass/ ProStar Hobbies/ Team JR Americas/ Gens Ace Field Representative/ Robird Demo Pilot / Western Robotics Field Representative
6HV-U, Warp, 7HV,Knight Pro,Knight 3D, Atom, Atom Stretch, Odin II, 6HV, 3D Plus, Knight 50
Ah Clem is online now        Reply With Quote
Old 02-21-2012, 02:47 PM   #5
Lager
Registered Users
 

Join Date: Jan 2010
Location: Sweden
Default

I have the same problem with my T-Rex 450 Sport/GY520/Align 520. Maybe the gyro/servo combination is wrong.
During gyro setup i accidently put the gyro in 760 mode for a very short period. Maybe i destroyed the gyro or the servo? But i think there is some smoke left in both gyro and servo
I will unstrap the black cable and hope it will solve the problem. Also waiting to hear from rdarby777.
/Jonny

Last edited by Lager; 02-22-2012 at 12:07 AM..
Lager is offline        Reply With Quote
Old 02-22-2012, 08:28 AM   #6
Thalios
 
My HF Map location
Join Date: Jul 2011
Location: Quebec City, Canada
Default

9650 is slow for a tail servo..
Thalios is offline        Reply With Quote
Old 02-22-2012, 11:00 AM   #7
Ah Clem
Registered Users
 
Posts: 15,105
 

Join Date: Jan 2006
Location: Alhambra, CA
Default

Thalios,

"9650 is slow for a tail servo.."

Yes, it is now, but it used to be one of the best choices for tail servos (five or six years back). It does work well with both the GY401 and GY520.

Newer/faster would be better, though.
__________________
KBDD-Team Pilot/ Team Compass/ ProStar Hobbies/ Team JR Americas/ Gens Ace Field Representative/ Robird Demo Pilot / Western Robotics Field Representative
6HV-U, Warp, 7HV,Knight Pro,Knight 3D, Atom, Atom Stretch, Odin II, 6HV, 3D Plus, Knight 50
Ah Clem is online now        Reply With Quote
Old 02-22-2012, 11:02 AM   #8
Thalios
 
My HF Map location
Join Date: Jul 2011
Location: Quebec City, Canada
Default

Quote:
Originally Posted by Ah Clem View Post
Yes, it is now, but it used to be one of the best choices for tail servos (five or six years back). It does work well with both the GY401 and GY520.

Newer/faster would be better, though.
No arguments there, but I think that the newer faster gyro might have issues with a slower servo on the tail.
Thalios is offline        Reply With Quote
Old 02-22-2012, 11:06 AM   #9
Ah Clem
Registered Users
 
Posts: 15,105
 

Join Date: Jan 2006
Location: Alhambra, CA
Default

It doesn't.

I have a bunch of 450's. I converted all of them to GY520's a couple of years back.The newer ones have JR3500G's on the tail.

The older ones still have 9650's on them, and they do work well with the GY520's. There are no problems with using the 9650 and the GY520 together.

Again, I would think tail performance could be further improved with a more modern servo.
__________________
KBDD-Team Pilot/ Team Compass/ ProStar Hobbies/ Team JR Americas/ Gens Ace Field Representative/ Robird Demo Pilot / Western Robotics Field Representative
6HV-U, Warp, 7HV,Knight Pro,Knight 3D, Atom, Atom Stretch, Odin II, 6HV, 3D Plus, Knight 50
Ah Clem is online now        Reply With Quote
Old 02-22-2012, 02:12 PM   #10
Thalios
 
My HF Map location
Join Date: Jul 2011
Location: Quebec City, Canada
Default

Quote:
Originally Posted by Ah Clem View Post
It doesn't.

I have a bunch of 450's. I converted all of them to GY520's a couple of years back.The newer ones have JR3500G's on the tail.

The older ones still have 9650's on them, and they do work well with the GY520's. There are no problems with using the 9650 and the GY520 together.

Again, I would think tail performance could be further improved with a more modern servo.
I stand corrected!

Thanks for the info!
Thalios is offline        Reply With Quote
Old 02-24-2012, 12:12 PM   #11
rdarby777
Registered Users
 
Posts: 628
Thread Starter Thread Starter
 

Join Date: Jan 2012
Location: Jacksonville,FL
Default

Yea still getting a wag in the tail...I am waiting for some gyros foam tape to arrive in the mail. I will be doing foam metal plate then foam. I am doing this for two reasons...1st is I have heard my digital tail servo may be cause interference...2nd it will help with any vibration issues. I will let u all know if it fixes the issue.
__________________
Goblin 700, TDR 2012, DX8
rdarby777 is offline        Reply With Quote
Old 02-24-2012, 12:32 PM   #12
Ah Clem
Registered Users
 
Posts: 15,105
 

Join Date: Jan 2006
Location: Alhambra, CA
Default

What transmitter and what channel is gyro gain on?
__________________
KBDD-Team Pilot/ Team Compass/ ProStar Hobbies/ Team JR Americas/ Gens Ace Field Representative/ Robird Demo Pilot / Western Robotics Field Representative
6HV-U, Warp, 7HV,Knight Pro,Knight 3D, Atom, Atom Stretch, Odin II, 6HV, 3D Plus, Knight 50
Ah Clem is online now        Reply With Quote
Old 02-24-2012, 11:48 PM   #13
rdarby777
Registered Users
 
Posts: 628
Thread Starter Thread Starter
 

Join Date: Jan 2012
Location: Jacksonville,FL
Default

i have a dx6i and the gyro is on the "gear" channel on the reciever. I have my gyro gain set to around 69.5 but have gone as low as 60 with a consistent wag. I removed my tail grips and bolt so just the shaft and bolt are sticking out. I get the same type of wag on the tail. Whats weird is that i have virtually eleminated all vibrations and the status light on my gy520 stays red HH mode but still getting that pesky wag. ( if there are vibes it changes colors rapidly depending on the type of input to the servo ie. blue right and red left) I also ordered a new belt, and tail bearings. i think i have enough spare parts for another heli.
rdarby777 is offline        Reply With Quote
Old 02-25-2012, 08:58 AM   #14
Ken125
Registered Users
 
My HF Map location
Join Date: Jan 2012
Location: Eatonton, Ga
Default

If I just read your last post correctly wou are getting the wag without any tail blades on the heli. If this is so you have eliminated the gyro and servo as a problem. You are getting a vibration from one of the rotating parts. My little gear that the belt rides on in the frame (Tail Drive Gear/Pulley Assembly) had some uneaven wear patterns. I was having problem keeping belt tight. This or a bad bearing could be causing problem.
Ken125 is offline        Reply With Quote
Old 02-25-2012, 09:40 AM   #15
rdarby777
Registered Users
 
Posts: 628
Thread Starter Thread Starter
 

Join Date: Jan 2012
Location: Jacksonville,FL
Default

Yea I was thinking that as well...I have replaced the tail main gear so it's not that. I have a new pulley gear and I'm going to swap that as soon as my new belt comes in from HH. If that doesn't fix it heli its going up for sale because I have officially replaced every part on this bird. I will say It runs smoother than it ever has besides the tail wag. Almost no vibe even at spool up


Sent from my iPad using Tapatalk HD
__________________
Goblin 700, TDR 2012, DX8
rdarby777 is offline        Reply With Quote
Old 02-25-2012, 09:44 AM   #16
Being
Registered Users
 

Join Date: Sep 2011
Location: N. Calif.
Default

Replace both pulleys, front and back. And I highly recommend the aluminum pulleys. The plastic ones deform after a few flights.
Being is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Helicopter Support > Blade Helicopters (eFlite) > Blade 450


Blade 450 Blade 450 Helicopters Information and Help

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Copyright © 2004-2011 - William James - Helifreak.com