RIGHT & DOWN THRUST ????? - Page 2

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MODE 1 · 10-23-2009, 01:50 PM

Before you go and break it up. Go over the model one more time checking all the measurements and straightness of the structure ...If your not sure how to check this or that ask.
Sounds to me like somethings out of alignment and should easily be located carrying out the right checks

gareth.ky · 10-23-2009, 04:14 PM

The Peter Goldsmith article is the one you want to read. Then you can use this chart.

3D-Seth · 10-23-2009, 06:17 PM

No model should need 1" of right rudder trim to fly straight. Something must not be straight somewhere in the build, like Mode 1 said.

Check incidences of wings, check stab alignment with the wings, check wing alignment with the fuse, and check your incidence of your vertical fin as well. You shouldn't need that much right rudder trim, even without right thrust at all.

Seth

MODE 1 · 10-23-2009, 06:33 PM

Earlier I mentioned about a model on FG that had a bad fin alignment which would most certainly put the rudder out of whack.
And here are two pics of it. Yours may be fine but something else may be wrong.

matus777 · 10-23-2009, 07:36 PM

well those pics show "permanent" right stab/rudder for sure....and lots of it too!

10-23-2009, 01:50 PM	#16
MODE 1 Has moved on Join Date: Jul 2008 Posts: 4,153	Re: RIGHT & DOWN THRUST ????? Before you go and break it up. Go over the model one more time checking all the measurements and straightness of the structure ...If your not sure how to check this or that ask. Sounds to me like somethings out of alignment and should easily be located carrying out the right checks

10-23-2009, 04:14 PM	#17
gareth.ky Caymanian Pirate Code Monkey Join Date: Jul 2006 Location: Mustang OK, USA Age: 31 Posts: 1,929	Re: RIGHT & DOWN THRUST ????? The Peter Goldsmith article is the one you want to read. Then you can use this chart. __________________ *Sawdust* is weight leaving the *airframe. Whether you think you can* or you *can't... your right*.

10-23-2009, 06:17 PM	#18
3D-Seth Horizon Hobby Employee Join Date: Jan 2006 Location: Champaign, IL Age: 21 Posts: 3,077	Re: RIGHT & DOWN THRUST ????? No model should need 1" of right rudder trim to fly straight. Something must not be straight somewhere in the build, like Mode 1 said. Check incidences of wings, check stab alignment with the wings, check wing alignment with the fuse, and check your incidence of your vertical fin as well. You shouldn't need that much right rudder trim, even without right thrust at all. Seth __________________ Horizon Hobby Desert Aircraft AeroGraphix Duralite Flight Systems Vess Propellers

10-23-2009, 06:33 PM	#19
MODE 1 Has moved on Join Date: Jul 2008 Posts: 4,153	Re: RIGHT & DOWN THRUST ????? Earlier I mentioned about a model on FG that had a bad fin alignment which would most certainly put the rudder out of whack. And here are two pics of it. Yours may be fine but something else may be wrong. Last edited by MODE 1; 01-20-2010 at 11:04 AM.

10-23-2009, 07:36 PM	#20
matus777 Bad-ass Super Contributer! Join Date: Jan 2006 Location: chicago,Illinois, usa Posts: 276	Re: RIGHT & DOWN THRUST ????? well those pics show "permanent" right stab/rudder for sure....and lots of it too!

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