LHS HEAD SHAKE - HeliFreak
Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopters > Low Head Speed Helicopters


Low Head Speed Helicopters Low Head Speed Helicopter Setups and Flying info


Reply
 
LinkBack Thread Tools Display Modes
Old 11-02-2016, 09:45 PM   #1 (permalink)
Registered Users
 

Join Date: Nov 2014
Location: Anniston, Alabama
Default LHS HEAD SHAKE

My Trex 700 e flybar shakes at LHS. Is this because of hard head dampners or mains being too tight. Doesn't shake at higher speeds. I know someone has the answer!
technut is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-03-2016, 05:36 AM   #2 (permalink)
Registered Users
 
Posts: 2,006
 

Join Date: Apr 2007
Location: London, UK
Default

It can sometimes be due to the blades being tight. It can also be the swash gain in your FBL unit. I have had the occasional wobble in a hover and cured it by lowering the gain a bit.
__________________
2009 TDR, Compass Knight 3D, Kasama Dune and Faifa
Robbe Futura SE and Dyna-X, Minicopter Triabolo 700, RMJ Raptor gasser
Beam E4 and Avantgarde, JR E8 leggero, Suzi Laos
trillian is online now        Reply With Quote Quick reply to this message
Old 11-05-2016, 05:10 PM   #3 (permalink)
Registered Users
 
Posts: 6,763
 
My HF Map location
Join Date: Oct 2008
Location: Cape Coral, FL, USA
Default

I noticed that hard dampers do not do to well for low rpm. So maybe you want to play with softer dampers.

also -> for the blades run it initial spool up a bit higher so they straighten out and than go to the low rpm. If blades are to loose you can easy run into issues where under harder collective input they fold back and ... boooooom

I have been there already.
__________________
Kontronik, Switch Blades, Bavarian Demon, TDR, TDF, Diabolo, HeliBaby, Takumi and Banshee
im4711 is online now        Reply With Quote Quick reply to this message
Old 11-05-2016, 09:01 PM   #4 (permalink)
Registered Users
 
Posts: 2,236
 
My HF Map location
Join Date: Aug 2010
Location: Rycroft Alberta , Canada
Default

Being that you are flybarred I would guess that they may be to hard but I have also found if they are not greased up well this can happen. I really try and have them lubed up well for lower headspeed stuff and it helps a lot .
__________________
Team Renegade R/C Heli Flyers
Dennis P is offline        Reply With Quote Quick reply to this message
Old 11-09-2016, 04:20 PM   #5 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Nov 2014
Location: Anniston, Alabama
Default

TY for all the suggestions. I'm installing the red dampners and recheck everything else. Will let yall know results
technut is offline        Reply With Quote Quick reply to this message
Old 11-14-2016, 09:47 PM   #6 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Nov 2014
Location: Anniston, Alabama
Default

Greased up red dampners and installed. Checked main blade tightness and flew her. No more head shake. TY to all who helped!!!
technut is offline        Reply With Quote Quick reply to this message
Reply




Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the HeliFreak forums, you must first register.
Please enter your desired user name, your REAL and WORKING email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself. Use a real email address or you will not be granted access to the site. Thank you.
Email Address:
Location
Where do you live? ie: Country, State, City or General Geographic Location please.
Name and Lastname
Enter name and last name here. (This information is not shown to the general public. Optional)
Helicopter #1
Enter Helicopter #1 type and equipment.
Insurance
Please select your insurance company (Optional)
Helicopter #2
Enter Helicopter #2 type and equipment.
Helicopter #3
Enter Helicopter #3 type and equipment.
Helicopter #4
Enter Helicopter #4 type and equipment.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On




Copyright © VerticalScope Inc. All rights reserved.
 

SEO by vBSEO 3.6.1