HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jul 10, 2011, 06:00 AM
InceCreations
vincent123's Avatar
Joined Jul 2009
693 Posts
Discussion
How to counteract propeller torgue ?

Hi folks,

I have flown several flying wings, the last one was a speedy one with 800Watt, engine HET 2W-18 and prop 4.75x4.75.

What i noticed is that the faster you fly, the more the plane starts to roll, due to the propeller torgue.

The usual way is to trim this out, but are there more intelligent Ways to solve this fenomenon?

I was thinking that a propeller at the nose Would show a lesser effect, caused by the swirl over the plane ?

Would havng a vertical stab at the end of the fuselage help (instead of having winglets)?

Vincent
vincent123 is online now Find More Posts by vincent123
RCG Plus Member
Latest blog entry: FZ5: design phase
Reply With Quote
Sign up now
to remove ads between posts
Old Jul 10, 2011, 10:14 PM
zoom zoom
gotboostedvr6's Avatar
USA, NJ, Mt Laurel
Joined Oct 2007
3,691 Posts
Vincent,

This issue is more a structural problem.. make the wing stiffer and it will vanish. look at the elevons, vertical stabs, and make sure there is no twist in the foil that is not equal on the other panel. This is best done when viewing from the rear.



-Dave
gotboostedvr6 is offline Find More Posts by gotboostedvr6
Reply With Quote
Old Jul 11, 2011, 02:48 PM
InceCreations
vincent123's Avatar
Joined Jul 2009
693 Posts
Dave, this would be good news, as the plane is a depron version.
The wing is stiff, it's ok, but the ailerons have some flex.

I will make them stiffer, and hope for an improvement ?

Vincent
vincent123 is online now Find More Posts by vincent123
RCG Plus Member
Latest blog entry: FZ5: design phase
Reply With Quote
Old Jan 25, 2013, 02:54 PM
InceCreations
vincent123's Avatar
Joined Jul 2009
693 Posts
Gotboost,

You were right: my FZ2 flies stable without propeller torgue effect at even 200 km/h
vincent123 is online now Find More Posts by vincent123
RCG Plus Member
Latest blog entry: FZ5: design phase
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Question how to balance a 3 blade propeller wavekatcher Electric Plane Talk 4 Jun 29, 2011 06:22 PM
EBAY: High torgue Futaba servo going cheap Jeff_Berg Aircraft - Fuel - Airplanes (FS/W) 1 May 31, 2004 08:09 PM
Great Planes retract torgue Doc Data Electric Plane Talk 8 Feb 13, 2004 10:54 AM
GWS Servo Torgue Doc Data GWS (Grand Wing Servo) 4 Oct 15, 2003 03:22 PM
How can I counteract prop torque steer? slowflyer Power Systems 12 Oct 04, 2001 08:59 AM