Tilman Baumann Posted July 16, 2013 Share Posted July 16, 2013 I have some issues with my mini DLG. I added a rudder. And to save weight I opted for a pull pull system to save weight. The servos I used are not good, I need more power. And I can only fluty one cell with this servo, but the receiver I use does not like that well. But my bigger problem is slack in the lines. I don't have space to put the rudder servo on a slider. But how to I put tension on the lines? Every solution I can imagine is too big. On the rudder side I have a simile bent wire hook. Hard to adjust that. Whimpy servo. Huge slack after one flying session. This can not be the solution. Link to comment Share on other sites More sharing options...
Rob Thomson Posted July 16, 2013 Share Posted July 16, 2013 Two clevises on a threaded rod?One pull wire and a spring? 1 Link to comment Share on other sites More sharing options...
Tilman Baumann Posted July 16, 2013 Author Share Posted July 16, 2013 Wire and string, could do that.I also have a 1mm carbon rod. But that's probably too sloppy for a pushrod. Link to comment Share on other sites More sharing options...
Tilman Baumann Posted July 16, 2013 Author Share Posted July 16, 2013 Wire and spring. Link to comment Share on other sites More sharing options...
satinet Posted July 17, 2013 Share Posted July 17, 2013 Are you familiar with the pull string method? Search rcg, there are threads. Link to comment Share on other sites More sharing options...
satinet Posted July 17, 2013 Share Posted July 17, 2013 Pull string rather, should I say. Popular for dlgs. Link to comment Share on other sites More sharing options...
jiberjaber Posted July 17, 2013 Share Posted July 17, 2013 Use guitar string, the finest string you can get with a pull sett up and a spring in the hinge line. You'll end up adding too much weight putting adjusters on the pull-pull Use very small dia alu tube for the crimp on the wire. Link to comment Share on other sites More sharing options...
Tilman Baumann Posted July 17, 2013 Author Share Posted July 17, 2013 I drilled and glued the wire. Perhaps also a source of slack.Adjustable tensioners are to heavy, one string and a rubber band will be my next test. Link to comment Share on other sites More sharing options...
Tilman Baumann Posted July 17, 2013 Author Share Posted July 17, 2013 Rubber band because I don't have a spring. Link to comment Share on other sites More sharing options...
jiberjaber Posted July 17, 2013 Share Posted July 17, 2013 You can make the spring out of piano wire, its a torsion spring. try different sizes of wire thickness to get the right spring tension. Worth a look in here: http://www.rcgroups.com/forums/showthread.php?t=1662082 Link to comment Share on other sites More sharing options...
satinet Posted July 17, 2013 Share Posted July 17, 2013 This thread might prove useful http://www.flyquiet.co.uk/smf/index.php?topic=4063.0 Link to comment Share on other sites More sharing options...
Tilman Baumann Posted July 17, 2013 Author Share Posted July 17, 2013 Oh, that Tailset Accessory Pack mentioned in there is pretty cool. All my problems solved for 3 quid. But the real problem is, I kind of need it done for the trip to Lundy end of the week. It's really down to the wire. Either I can get this working reliably in time or it stays home. (I don't think there is much of a chance for really low wind days anyway. So that is all right.) Even if I get the spring stuff in time. I don't think I can get the servos too. PS: The servo kind of works still. 90% or so. I mus have over stressed it in it's previous life as a aileron servo. Link to comment Share on other sites More sharing options...
satinet Posted July 17, 2013 Share Posted July 17, 2013 You can probably get the accessory pack tomorrow. Bowings is pretty quick. You should be able to get the servos too. I use T9 or phoenix models. Ring and ask Can you do it in one evening ?? Link to comment Share on other sites More sharing options...
Tilman Baumann Posted July 17, 2013 Author Share Posted July 17, 2013 I can do it on the island if I have to. I just ordered 2 x Corona DS-928BB Digital Servo from Giantshark via next day delivery.Waste of money, but hey, would be a shame if I take that plane with me and can't fly it.Crazy last minute stuff. I had already decided to leave the plane home. But I hate to do half things like that. Link to comment Share on other sites More sharing options...
jiberjaber Posted July 17, 2013 Share Posted July 17, 2013 Not sure why you have a rudder on a Binary900 (I think thats what you've shown in the photo), its quite happy without one, just use reverse differential on the ailerons to compensate (thats what myself and most rudderless DLG pilots use). If you are going to go with a pull-spring, you want the rudder control horn on the side away from your launch peg. Link to comment Share on other sites More sharing options...
Tilman Baumann Posted July 17, 2013 Author Share Posted July 17, 2013 I tried without rudder. And even with strong diff I could not get out of the adverse yaw. And it had a tendency to fall out of the sky or lose too much energy before I got it to turn quick.I liked it much better with ruder. Link to comment Share on other sites More sharing options...
Rob Thomson Posted July 17, 2013 Share Posted July 17, 2013 I think it is flying skill lacking :D Link to comment Share on other sites More sharing options...
Tilman Baumann Posted July 17, 2013 Author Share Posted July 17, 2013 Whatever. More fun with rudder. :p Link to comment Share on other sites More sharing options...
Rob Thomson Posted July 17, 2013 Share Posted July 17, 2013 Lol. It would fly better with a rudder too - I think a worthy mod. But I like to think I am aloud to make fun of your flying skills - that is until you have survived lundy without loosing a model to the ocean! Hope I dont loose one or I will never live that down Link to comment Share on other sites More sharing options...
Tilman Baumann Posted July 17, 2013 Author Share Posted July 17, 2013 Challenge accepted 1 Link to comment Share on other sites More sharing options...
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