jack Posted October 14, 2009 Share Posted October 14, 2009 Hello folks, I wonder if anyone has any setup tips to reduce engine twist please? My props turn clockwise looking from the back. I find the engine twists anticlockwise, as I'm flying the left side of the seat gets pulled down with it so it feels I'm not seated level which I find uncomfortable. I wondered if I tightened the straps holding the engine to the harness, if this would help to reduce the 'play' between engine and harness not allowing so much twist under power? I have tried having the harness strap slightly longer and shorter on one side although am not overly confident on all the effects in terms of adjustment, as to which way to adjust. Weight shift to the right helps a little but gets tiring after a while. More recently I settled on having them the caribeners level, measuring from the seat up the harness strap to them on each side. If If I adjust to raise the caribener it lengthens the distance to the seat making the effect worse. If I lower the caribener it brings that riser down turning me left anyway? Do others have this effect with the unlevel seat? Its ok power off in thermals! Ho ho Many thanks for any help from the experts. Regards, Jack Quote Link to comment Share on other sites More sharing options...
Guest Posted October 14, 2009 Share Posted October 14, 2009 Simply put... Which ever side you want to weight shift to (in your case the right) shorten that strap. Whats the motor and wing? SW Quote Link to comment Share on other sites More sharing options...
Farmer_Dave Posted October 14, 2009 Share Posted October 14, 2009 Not an issue in level flight but if climbing fast I tend to clip the brakes up and reach for the left stabilo (wingtip) line and pull it in enough to fly straight. Doesn't take much effort. I have flown with the left trimmer tighter than the right but someone said that might not be a good situation to be in if trying to sort out a largish collapse. I've slid my fuel tank to the left and mounted the reserve on the left. Quote Link to comment Share on other sites More sharing options...
jack Posted October 14, 2009 Author Share Posted October 14, 2009 Thanks for your help Simon and Dave. Motor :RAD MXL Wing :Action 29 Harness: Woody Valley, Large I don't have to adjust any trims of make any brake input to fly straight and level, its just the seat on the tilt that I'm finding a problem. I thing I need to tighten the straps holding the motor to the harness? Many thanks, Jack Quote Link to comment Share on other sites More sharing options...
Guest Posted October 14, 2009 Share Posted October 14, 2009 The RAD's do tend to move round a bit on your back if you dont get those straps done up correctly for you. I reccomend a hang check if poss. SW Quote Link to comment Share on other sites More sharing options...
Phil_P Posted October 14, 2009 Share Posted October 14, 2009 Thanks for your help Simon and Dave.Motor :RAD MXL Wing :Action 29 Harness: Woody Valley, Large I don't have to adjust any trims of make any brake input to fly straight and level, its just the seat on the tilt that I'm finding a problem. I thing I need to tighten the straps holding the motor to the harness? Many thanks, Jack I have a bit of a theory here, bear with me; As your prop turns CW, as you say this will result in the motor turning ACW, giving you a left side of seat low situation. I would guess that our bodies in an effort to create equilibrium will probably subconsciously weight shift somewhat to the right to counteract this effect. The resultant that you are finding is that you are flying straight. Well, here is a bit of a problem. If you lengthen the harness straps on the right (or shorten those on the left) in order to level the seat, you will effectively have introduced a control input that will result in your aircraft turning to the left (by removing the R weight shift element). So you now have a bit of a paradox; accept the out of level seat, or actually have to go to MORE effort in order to fly as straight as you are managing to do now. Personally, I'd accept the out of level seat and be happy you are flying straight. Phil Quote Link to comment Share on other sites More sharing options...
lib Posted October 14, 2009 Share Posted October 14, 2009 Or make your own with 2 props, one spinning the other direction. Quote Link to comment Share on other sites More sharing options...
elmariachi Posted January 28, 2010 Share Posted January 28, 2010 hi, I had or have the same problem. But seems to me that different props have different attitude. With my old prop the torque problem was minor, then i broke this prop and bought a new one. The first flight felt so so different and was exactly what you said - feeling off course, in my case about 10deg. I double checked during flight that some of the straps might have come loose, so different was the feeling. So what i think is that the prop (shape, pitch) might be the one to consider. Also would you let me know did the different strap setting on the right and left helped. cheers Elm Quote Link to comment Share on other sites More sharing options...
learner_driver Posted February 6, 2010 Share Posted February 6, 2010 I have added three washer to the right hand side engine mounts (looking from the rear) to stop me turning right . I will let you know if it works or its Quote Link to comment Share on other sites More sharing options...
Phil_P Posted February 6, 2010 Share Posted February 6, 2010 Watch out that this doesn't bring the L/H tip of the prop perilously close to your cage, especially under full load. Phil Quote Link to comment Share on other sites More sharing options...
learner_driver Posted February 7, 2010 Share Posted February 7, 2010 Its a good tip thanks. I checked, thanks for the warning. luckily the cage is overly large. Looking forward to a flight soon. All working again Quote Link to comment Share on other sites More sharing options...
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