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Old 08-24-2006, 05:42 PM   #1
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Dual Rates Question

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Going to try out my dual rates, and just wanted to clarify something. BTW - it's on an Easy Sport 40.

Low Rates - smaller movement.
High Rates - larger movement.

My low rates are now set to what I have been flying the aircraft at (prior to setting it up for dual rates.

So, when do I use high, and when do I use low? I'm assuming that I can use low for landings and takeoffs, and then switch to high once I'm in the air?

Colin Jensen
Regina Windy Flyers
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Old 08-24-2006, 06:01 PM   #2
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Correct in all your assumptions.
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Old 08-24-2006, 06:31 PM   #3
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Hi Colin

Your high rates should be set to your instruction book values
And should always be used for take off and for full out flying.
Lo rates should be set to book values also, But if those values are not givin, I set mine to about 80% of the high rate setting. Lo rates are for casual flying once you are airborn. I don't think those values you just put in are right, You may have increased your throws to much now on the high rates, unless you have been flying on a low rate setting all this time.

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Old 08-24-2006, 06:38 PM   #4
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I find it better to use some expo and then you don't need to chage your rates. It makes the sticks softer in the center and still gives maximum throws when needed.
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Old 08-24-2006, 06:48 PM   #5
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Yes expo is good to, but if you panic for one reason or another and start swinging sticks you could get into more trouble. Set both rates up with some expo if you wish. I only use expo on certain planes, its good to fly with full stik motion. Just my opinion

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Old 08-24-2006, 06:54 PM   #6
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Hi Colin,

I usually leave my ailerons on high rates all the time. For the elevator, I fly low rates for take off, landing as well as general flying. In my case, because I like 3D flying as well as aerobatics, I switch to high rate elevator when I want to do (or try to do) extreme aerobatics or 3D flying. If I want to fly a couple of circuits in between I will switch back to low rates on elevator.

With an easy sport, I would recommend to take off and land with your low rates (on both elevator and ailerons) since that it was you are used to. Once in the air, you can switch to high rates on aileron and see the change in the flying characteristics. Then, when you are high up, switch your elevator to high and see how the plane responds. Some planes snap easily on high rate elevator so be careful!!
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Old 08-27-2006, 11:15 PM   #7
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rates and expo


Low rates should be for all normal flying styles including take off and landing you should be able to fly the plane solely on low rate. High rates are extended throws for more agressive aerobatics aka tighter loops, rolls, post stall stunts such as harriers and 3D flight.

Expo - I personally hate it, will never fly with it again, I like to have a lot of control all the way through the stick motion of the transmitter. I use rates for stunt VS normal flying.

Just my 2 cents.
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Old 08-27-2006, 11:32 PM   #8
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I fly with a minimum of 30 expo even on low rates. The reason I do it is because of geometry. If you look really closely at the movement of the servo arm, you will notice that the arm pushes more in the first quarter of the rotation than at any other time. 25% - 35% expo is used to create a linear feel. I have setup for precision on low and 3d on high. I do all flying on low rates on my 27% and switch to high only for 3d with about 45%-50% on all surfaces. After the 3d maneuver I switch back to low. My low rates are high enough for all other maneuvers.

On smaller 40 size planes and especially foamies I only fly on high with expo ranging from 30%-55%. High being plus 45 degrees of deflection.
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Old 08-28-2006, 06:22 AM   #9
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i nearly crashed my plane the past weekend coz i tried landing in a cross wind on low rates .
Luckily got away with a zero damage.

flying high rates with expo wont hurt. just stick around the middle when landing and taking off.
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Old 08-28-2006, 07:33 AM   #10
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An interesting thread - in particular, the recommendations. Some flyers like low rates for landing and take-off and others prefer high rates. Is there a "correct" answer? Perhaps itís more a case of personal preference, taking into account the type of aircraft being flown and the experience of the pilot. My personal preference is to fly with high rates for take-off and landing because as the model's airspeed decreases or is low the control surfaces become less effective. When I'm landing I prefer to have a more positive feel to the controls and a more responsive aircraft.

Perhaps for a beginner its better to use low rates when close to the ground and for general flying and then switch to higher rates when the pilot wants to fly some aeros.

Peter Merkel
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