Elvons-throw on Rookie
#1
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From: Norway, NORWAY
Hello
I need help on how much throw on the elevator on my Rookie.
The manual said get 35 mm throw (measured at the root). I would then have to use the "lowest" hole in the control horn and that is only 8mm from the top skin of the wing and the hole where the push-rod is coming out of the wing would be 5 cm long. If I use the second lowest hole that are 14mm from the top-skin I can get 28mm of up-throw. My servo is JR8411 set to 125% throw and I am using the longest servo-horn that i can.
Can some of you good people out there help me on this one ?
I also had to put fiberglas/carbon-rope on all fuselage former and engine-mount, because the glue Composite had just had cracked up many places :-( so I probably has a plane from the first batch when they used to much filler in the glue ? anyone else have this problem ?
Thanks.
Sorry for this rader long mail and the "typeos".
Best regards from
Andre B.
I need help on how much throw on the elevator on my Rookie.
The manual said get 35 mm throw (measured at the root). I would then have to use the "lowest" hole in the control horn and that is only 8mm from the top skin of the wing and the hole where the push-rod is coming out of the wing would be 5 cm long. If I use the second lowest hole that are 14mm from the top-skin I can get 28mm of up-throw. My servo is JR8411 set to 125% throw and I am using the longest servo-horn that i can.
Can some of you good people out there help me on this one ?
I also had to put fiberglas/carbon-rope on all fuselage former and engine-mount, because the glue Composite had just had cracked up many places :-( so I probably has a plane from the first batch when they used to much filler in the glue ? anyone else have this problem ?
Thanks.
Sorry for this rader long mail and the "typeos".
Best regards from
Andre B.
#3
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From: Norway, NORWAY
Hello Vin..
Thanks or your reply :-)
About the throws on the rudder, I have set "all there is" in the radio to max: endpoint, dual-rate. Still I cant get 35mm unless I´m using the lowest hole (and I will try to avoid that, the further out on the arm the better I think).
Only solusion I can think of is to offset the servo horn so that it gives more "up-throw" on the rudder, I will try that tomrrow, maybee it helps ? But then again that might give me some problem of getting the two rudder on the same wing to move together ?
Thanks.
Andre
Thanks or your reply :-)
About the throws on the rudder, I have set "all there is" in the radio to max: endpoint, dual-rate. Still I cant get 35mm unless I´m using the lowest hole (and I will try to avoid that, the further out on the arm the better I think).
Only solusion I can think of is to offset the servo horn so that it gives more "up-throw" on the rudder, I will try that tomrrow, maybee it helps ? But then again that might give me some problem of getting the two rudder on the same wing to move together ?
Thanks.
Andre
#4

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From: Marysville,
WA
Perhaps your servos are mounted wrong. I had this same problem. I had mounted the servos with the arms closest to the trailing edge (to make the linkages as short as possible), and couldn't get enough travel. I turned the servos around (JR 8411's), so the arms exit closer to the leading edge, and now get plenty of travel in the top hole on the elevon horn.
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From: Oak Park,
CA
I have a kangaroo, and I fly with as much deflection thats physically possible. But that's just me. I started with the factory recommended settings and they were very comfortable, just a little to comfortable for me.



