How tight should rotor blades be?  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Helicopters >> RC Helicopter General Discussions >> How tight should rotor blades be?
Page: [1]

Login
Message << Older Topic   Newer Topic >>
How tight should rotor blades be? - 5/10/2008 9:01:46 PM   
golfingguy27


 

Posts: 146
Joined: 10/24/2002
From: Frederick, MD, USA
Status: offline 		Hey guys,
Progressing along on the setup of my first nitro heli. It's a used Evo 50 I bought here on RCU. I got to a point where I could run the engine some and get some gratification. I still have other things to set up before it's ready for it's first flight, but I have a question from running it up. As the rotor spools up and get's close to hover rpm it get's a relativley nasty wobble. I'm guessing it may be how tight I have the rotor blades?? If I remember correctly I read somewhere along the way that if it does that during spool up it's either to tight or too lose, and the opposite if it does it when spooling down?? The previous owner told me the blades are balanced and that they have been tracked so it shouldn't be either of those. Anything else I should check??

Thanks,
Todd
       Post #: 1

RE: How tight should rotor blades be? - 5/10/2008 10:16:14 PM   
tadawson


 

Posts: 456
Joined: 9/5/2002
From: Lewisville, TX, USA
Status: offline 		A generally accepted "rule of thumb" for tightness is that if you hold the heli on it's side and gently bounce it, they should just begin to move . . . too tight gets you the shakes. Too loose, and they fold back on spoolup (or other things) . . .

- Tim

(in reply to golfingguy27)
       Post #: 2

RE: How tight should rotor blades be? - 5/10/2008 10:56:05 PM   
BarracudaHockey



Posts: 10231
Joined: 7/13/2003
From: Orange Park, FL, USA
Status: offline 		Tim is correct, hold it on its side and they should stay put, give it a shake and they should move. Also strive for approx even tension on the bolts.

Some (most maybe) helicopters go through a period or ressonance where they shake during spool up, the cure, if thats whats going on, is to power through it quickly and get the head up to speed.

_____________________________

Andy - Helicopter Forum Moderator
AMA 77227 http://www.jaxrc.com

(in reply to tadawson)
       Post #: 3

Page:   [1]
All Forums >> RC Helicopters >> RC Helicopter General Discussions >> How tight should rotor blades be?
Page: [1]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.547RCU1