fluffyninja Posted August 11, 2022 Share Posted August 11, 2022 Hi I am new to this forum , just wondered if anyone had any ideas on my problem ? After building and connecting up everything as I thought I should I can get proper throttle and aileron control but the only movement I can get on the elevators is down from the central position not up so the A/C wouldn't be able to climb. A/C is a BAE Arrows 50mm Hawk with spektrum DXS transmitter , thanks. Quote Link to comment Share on other sites More sharing options...
kc Posted August 11, 2022 Share Posted August 11, 2022 (edited) Welcome to the forum. You need to state more details or a photo of the servos to enable us to help you. My first thought is that you may have the wrong Mode - so please state if you are using Mode 2 ( elevator on right stick ) or Mode 1 ( elevator on left stick and throttle right ) Many modern Tx can be swapped from Mode 2 to Mode 1 in the memory and the throttle rachet can be swapped physically inside the case. When it's swapped the elevator stick is then springloaded centrally. If it's not a Mode problem then show a photo of the servo arms. Edited August 11, 2022 by kc 1 Quote Link to comment Share on other sites More sharing options...
fluffyninja Posted August 11, 2022 Author Share Posted August 11, 2022 https://www.youtube.com/watch?v=YlK32utIoA8 You can see I have working throttle and ailerons but the elevator is set in the down position and will only move to level then back to the down position , thanks in advance. Quote Link to comment Share on other sites More sharing options...
fluffyninja Posted August 11, 2022 Author Share Posted August 11, 2022 12 minutes ago, kc said: Welcome to the forum. You need to state more details or a photo of the servos to enable us to help you. My first thought is that you may have the wrong Mode - so please state if you are using Mode 2 ( elevator on right stick ) or Mode 1 ( elevator on left stick and throttle right ) Many modern Tx can be swapped from Mode 2 to Mode 1 in the memory and the throttle rachet can be swapped physically inside the case. When it's swapped the elevator stick is then springloaded centrally. If it's not a Mode problem then show a photo of the servo arms. Mode 2 Quote Link to comment Share on other sites More sharing options...
kc Posted August 11, 2022 Share Posted August 11, 2022 (edited) Looks like a Mode 1 Tx with a rachet on the right stick? See this page of the manual to look for the lights that indicate Mode Edited August 11, 2022 by kc 1 Quote Link to comment Share on other sites More sharing options...
Gary Manuel Posted August 11, 2022 Share Posted August 11, 2022 Note that the video is INVERTED as can be seen from the reversed text. Quote Link to comment Share on other sites More sharing options...
fluffyninja Posted August 11, 2022 Author Share Posted August 11, 2022 11 minutes ago, kc said: Looks like a Mode 1 Tx with a rachet on the right stick? See this page of the manual to look for the lights that indicate Mode Thanks Quote Link to comment Share on other sites More sharing options...
kc Posted August 11, 2022 Share Posted August 11, 2022 (edited) Well spotted Gary! So it's OK the elevator is actually on the correct stick ( right stick) for Mode 2 Normally a Tx comes as Mode 2 but someone might have altered it. ( worth checking what lights come on though ) Next question is what channels are the servos plugged into and then is the elevator servo arm central when stick is centred. Edited August 11, 2022 by kc Quote Link to comment Share on other sites More sharing options...
Gary Manuel Posted August 11, 2022 Share Posted August 11, 2022 (edited) If I've got my head around the inverted video, you are setup for mode 2 (throttle on the left) and everything looks to be working the right way round. Ailerons look OK but the length of your elevator pushrods need mechanically adjusting so that the ailerons are level with the transmitter stick in the centre position. The servo arms should be 90 degrees to the pushrods when in this position. Edited August 11, 2022 by Gary Manuel Quote Link to comment Share on other sites More sharing options...
Gary Manuel Posted August 11, 2022 Share Posted August 11, 2022 I think your ailerons are inverted, but the reverse video is playing tricks with my mind. Can you post another video not inverted and clearly show which way you are moving the sticks and which way the controls move. It would also help if we could see the elevator servo arm movement too. Quote Link to comment Share on other sites More sharing options...
kc Posted August 11, 2022 Share Posted August 11, 2022 The video is not actually inverted but reversed laterally. Try watching it in a mirror Gary! Quote Link to comment Share on other sites More sharing options...
John Wagg Posted August 11, 2022 Share Posted August 11, 2022 Agree it is a Mode2 Tx. I would disconnect the elevator rod clevises and check that the servo will drive in both directions. If it does then check that the servo arm is centred on the servo. (Right angle with the control rod.) If it is then the clevises need unscrewing to move the elevators to their central level position. If there is an adjuster at the servo end that also could be adjusted. IMPORTANT - does this model have a "Giro" stabiliser ? Quote Link to comment Share on other sites More sharing options...
Denis Watkins Posted August 11, 2022 Share Posted August 11, 2022 With the Gyro switched ON The Elevator has much reduced throw Quote Link to comment Share on other sites More sharing options...
fluffyninja Posted August 11, 2022 Author Share Posted August 11, 2022 No gyro Quote Link to comment Share on other sites More sharing options...
fluffyninja Posted August 11, 2022 Author Share Posted August 11, 2022 44 minutes ago, kc said: The video is not actually inverted but reversed laterally. Try watching it in a mirror Gary! Sorry for the confusion Quote Link to comment Share on other sites More sharing options...
John Wagg Posted August 11, 2022 Share Posted August 11, 2022 2 minutes ago, fluffyninja said: No gyro Just asking as this could effect the servo movement. Gyro's can be had for about £18. Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted August 11, 2022 Share Posted August 11, 2022 @fluffyninjaSomething is making me think that this is your first model. 1 Quote Link to comment Share on other sites More sharing options...
fluffyninja Posted August 11, 2022 Author Share Posted August 11, 2022 Here is another video , engine works fine blew the phone over ! Quote Link to comment Share on other sites More sharing options...
fluffyninja Posted August 11, 2022 Author Share Posted August 11, 2022 4 minutes ago, EarlyBird said: @fluffyninjaSomething is making me think that this is your first model. I have 2 foamies , first slightly bigger model yes you would be right Quote Link to comment Share on other sites More sharing options...
fluffyninja Posted August 11, 2022 Author Share Posted August 11, 2022 8 minutes ago, John Wagg said: Just asking as this could effect the servo movement. Gyro's can be had for about £18. Yes it is sold as an extra add on option over here where as most of the youtube build videos have one fitted already Quote Link to comment Share on other sites More sharing options...
John Wagg Posted August 11, 2022 Share Posted August 11, 2022 In the video, is that the elevator servo that can be seen ? There is an allen key clamp on the servo arm. Check that the arm is central at the stick neutral and undo the clamp and adjust the wire rod to set the elevators. I presume that the rod is long enough for this. You may have to unscrew the clevises as well to set up. 1 Quote Link to comment Share on other sites More sharing options...
fluffyninja Posted August 11, 2022 Author Share Posted August 11, 2022 7 minutes ago, EarlyBird said: @fluffyninjaSomething is making me think that this is your first model. I get the same questions at my local model shop , 2 years ago they laughed at me and told me to go away and learn to fly using a trainer I have done everything they asked and bought myself P51 & Spitfire foamies. Now I would like to try something a bit bigger and am getting the same kind of thing , if people never try how are they supposed to know if they are capable of flying them ? I know it's not going to be easy and I'm going to end up needing / ordering a gyro , for now I'm just trying to get it working properly and functioning as it says in the manual , as it says do your pre flight checks. Elevator not functioning obviously , just trying to fix that and understand what's wrong before I even think about flying it. Quote Link to comment Share on other sites More sharing options...
John Wagg Posted August 11, 2022 Share Posted August 11, 2022 From your video I would suggest that the control rod needs adjusting (lengthening). Either at the servo and or the clevises. Quote Link to comment Share on other sites More sharing options...
fluffyninja Posted August 11, 2022 Author Share Posted August 11, 2022 1 minute ago, John Wagg said: In the video, is that the elevator servo that can be seen ? There is an allen key clamp on the servo arm. Check that the arm is central at the stick neutral and undo the clamp and adjust the wire rod to set the elevators. I presume that the rod is long enough for this. You may have to unscrew the clevises as well to set up. Yes it is the elevator servo , there appears to be a tiny allen clamp and there is about an inch or so spare rod that you could push through , thanks 😀 1 Quote Link to comment Share on other sites More sharing options...
John Wagg Posted August 11, 2022 Share Posted August 11, 2022 (edited) Before making any changes make a note of where things are (position of rod in clamp) so that you can return them if changes don't work. Plenty of spare rod to play with. Should do the trick 👍 Edited August 11, 2022 by John Wagg Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.