Setting correct surface throws
09-02-2008 | 01:18 PM
#1
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From: Oklahoma City,
OK
Setting correct surface throws
I borrowed a H9 digital meter that only reads degrees, my manual gives only mm. I can convert to inches no problem, but can the degrees be used to set it without having manufacturer degree specs? Do I need to get one of these instead?
http://www3.towerhobbies.com/cgi-bin...?&I=LXK260&P=M
http://www3.towerhobbies.com/cgi-bin...?&I=LXET68&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXK260&P=M
http://www3.towerhobbies.com/cgi-bin...?&I=LXET68&P=7
09-02-2008 | 01:23 PM
#3
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RE: Setting correct surface throws
You don't need anything fancy.
I use the TLAR Principle (That Looks About Right)
Remember that the manufacturer's recommendations are only that - Recommendations.
Set the throws so they look about right, fly the plane, and adjust accordingly.
I use the TLAR Principle (That Looks About Right)
Remember that the manufacturer's recommendations are only that - Recommendations.
Set the throws so they look about right, fly the plane, and adjust accordingly.
09-02-2008 | 05:45 PM
#5
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RE: Setting correct surface throws
I have only gone by degrees for years now, I make up my own meters. For A 3-D plane I start at 18 degrees high and 12 degrees low rates, all other planes at about 10 or 12 high and 8 or 10 for the low. At the same time I use Minns TLAR method, sometimes it and the meters work hand in hand. The meters will get you dead on though.
09-02-2008 | 09:43 PM
#6
RE: Setting correct surface throws
but can the degrees be used to set it without having manufacturer degree specs?
Now, if we can find someone who paid attention he'll tell you the details.
I do remember Vicky Eldermann's sweater, though . . .
09-02-2008 | 09:54 PM
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From: GraftonNew South Wales, AUSTRALIA
RE: Setting correct surface throws
Measuring throw in inches, millimetres, or miles for that matter varies depending on the width of the control surface at the point of measurement. Half an inch of travel will be different for different size aircraft.
A measurement in degrees however is the same irrespective of the plane, which is why the meter is graduated that way.
The magic formula is Sine A = D/W, where:-
Sine A is the Sine (trig function) of the deflection angle
D is the deflection
W is the width of the control surface at the point of measurement.
Or, as someone has already said, you could just guess
Terry
A measurement in degrees however is the same irrespective of the plane, which is why the meter is graduated that way.
The magic formula is Sine A = D/W, where:-
Sine A is the Sine (trig function) of the deflection angle
D is the deflection
W is the width of the control surface at the point of measurement.
Or, as someone has already said, you could just guess
Terry
09-02-2008 | 10:40 PM
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From: Rochelle, GA
RE: Setting correct surface throws
just remember ONE thing after you set your "low" and "high" settings:
WHICH SWITCH IS "LOW" AND WHICH IS "HIGH"
you can give yourself a cardiac arrest if you get these 2 mixed up; I just make it a part of "pre-flight" checking now
....tell me there isn't SOMEONE here who hasn't done this at LEAST ONCE !!!!! [:@]
WHICH SWITCH IS "LOW" AND WHICH IS "HIGH"
you can give yourself a cardiac arrest if you get these 2 mixed up; I just make it a part of "pre-flight" checking now
....tell me there isn't SOMEONE here who hasn't done this at LEAST ONCE !!!!! [:@]
09-02-2008 | 11:54 PM
#9
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RE: Setting correct surface throws
Unless I set up my throws on A three way switch the rate switches are always the same if left on factory default, rate switches are never A problem, remembering what switches I have set to do other stuff??? That has jumped up and bit me in the mule!!!
Redback, why don't you just lay back, close your eyes and remember Vicky Eldermann's sweater??
Redback, why don't you just lay back, close your eyes and remember Vicky Eldermann's sweater??
09-03-2008 | 08:18 AM
#10
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RE: Setting correct surface throws
If you guys are intereested in getting it perfect, whether by degrees, inches or millimeters, I just reviewed a new product that is the cat's meow.
http://www.rcuniverse.com/magazine/a...rticle_id=1030
Ah yes, Vicky Eldermann's sweater! I remember Vicky went to Lincoln High School where she was once voted "Miss Lincoln"
...Because everyone took a shot at her in the balcony
http://www.rcuniverse.com/magazine/a...rticle_id=1030
Ah yes, Vicky Eldermann's sweater! I remember Vicky went to Lincoln High School where she was once voted "Miss Lincoln"
...Because everyone took a shot at her in the balcony
09-03-2008 | 11:54 PM
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From: Oklahoma City,
OK
RE: Setting correct surface throws
ORIGINAL: Redback
Measuring throw in inches, millimetres, or miles for that matter varies depending on the width of the control surface at the point of measurement. Half an inch of travel will be different for different size aircraft.
A measurement in degrees however is the same irrespective of the plane, which is why the meter is graduated that way.
The magic formula is Sine A = D/W, where:-
Sine A is the Sine (trig function) of the deflection angle
D is the deflection
W is the width of the control surface at the point of measurement.
Or, as someone has already said, you could just guess
Terry
Measuring throw in inches, millimetres, or miles for that matter varies depending on the width of the control surface at the point of measurement. Half an inch of travel will be different for different size aircraft.
A measurement in degrees however is the same irrespective of the plane, which is why the meter is graduated that way.
The magic formula is Sine A = D/W, where:-
Sine A is the Sine (trig function) of the deflection angle
D is the deflection
W is the width of the control surface at the point of measurement.
Or, as someone has already said, you could just guess
Terry
09-04-2008 | 01:56 PM
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From: Houston, TX
RE: Setting correct surface throws
I believe the most accurate measurements are actually taken using satellites.
Initial set up is used with a ruler and the instruction's recommended throws. Then you fly. Then you make tiny adjustments using your Xmitter until the plane performs and feels the way you like. That changes from person to person. Your throws will be different from everyone elses. So excrutiatingly accurate initial values are not needed.
Initial set up is used with a ruler and the instruction's recommended throws. Then you fly. Then you make tiny adjustments using your Xmitter until the plane performs and feels the way you like. That changes from person to person. Your throws will be different from everyone elses. So excrutiatingly accurate initial values are not needed.
