Go Back  RCU Forums > RC Helicopters > Electric RC Helis > T-Rex heli
 Setting up JR9303 and Trex 450 Pro with GP750 gryo? >

Setting up JR9303 and Trex 450 Pro with GP750 gryo?

Notices
T-Rex heli For all you T-Rex lovers out there, this where you can post!

Setting up JR9303 and Trex 450 Pro with GP750 gryo?

Old 05-17-2010, 12:59 PM
  #1  
Thread Starter
My Feedback: (2)
 
harrier's Avatar
 
Join Date: Jun 2002
Location: Suwanee, GA
Posts: 120
Likes: 0
Received 0 Likes on 0 Posts
Default Setting up JR9303 and Trex 450 Pro with GP750 gryo?

I have a JR 9303, Trex 450 Pro running the Align GP750 gyro. I need some help clarifying what the diff is between Gyro Sensitivity and Travel Adjustment on the Gear Switch.

Setup is as follows:
Rudder to Gyro port
Gyro goes to Rudd / Gear ports on RX (single yellow to the Gear on the RX)

When I move the Gear Switch on the radio the green light turns to red on the gyro. When in flight, the green is HH mode, and red os non-HH mode. Simple enough.

At first I had the Gear Travel at +/- 100, and the tail was shaking terribly. Someone told me to turn down the travel on the Gear channel to something like +/- 40, which helped out tremendously.

Now my Gyro Sensitivity in the Radio is set to around 70% but changing this around doesn't seem to do a whole lot. Changes to the Gear Travel seem to have the largest impact.

Can someone explain what the proper way to setup the gyro is and why the sensitivity changes appear to not do much?

Thanks.
Old 05-17-2010, 01:59 PM
  #2  
Senior Member
 
Join Date: Feb 2008
Location: orlando, FL
Posts: 2,544
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Setting up JR9303 and Trex 450 Pro with GP750 gryo?

Hey Doc, I have the DX7 myself. but the principles remain the same. travel adjust on the rudder will increase the rate at which your heli will yaw (piro rate). you can independately change these values to the left or right to match for both. I have mine at 110% left and right. which is a little faster than the default 100%.

I have gyro=gear in my menu. flipping the gear switch on my dx7 toggles the gyro mode (red- normal rate mode, green-heading hold mode).
changing the values on my gear channel controls the gain for gyro mode. You want the gain high enough until your heli starts to wag then back off the gain until it stops wagging. this will help how will your tail will hold in various scenarios. with a higher gain you will find that the tail is snappy.
Old 05-17-2010, 02:44 PM
  #3  
Thread Starter
My Feedback: (2)
 
harrier's Avatar
 
Join Date: Jun 2002
Location: Suwanee, GA
Posts: 120
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Setting up JR9303 and Trex 450 Pro with GP750 gryo?

Hey thanks, but what does the Gyro Sensitivity do? I have a setting on my radio for that and the manual says to put it at 70% but changing it to 10% and 90% doesn't seem to change anything.
Old 05-17-2010, 02:49 PM
  #4  
Senior Member
 
Join Date: Feb 2008
Location: orlando, FL
Posts: 2,544
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Setting up JR9303 and Trex 450 Pro with GP750 gryo?


ORIGINAL: harrier

Hey thanks, but what does the Gyro Sensitivity do? I have a setting on my radio for that and the manual says to put it at 70% but changing it to 10% and 90% doesn't seem to change anything.
Ibelieve it has something to do with the gyro sense menu. which I'm not using. I adjust the gain for the gyro and that's it.

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
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Thread Tools
Search this Thread

Contact Us - Manage Preferences Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.