Plummet Posted October 8, 2013 Share Posted October 8, 2013 I am having to do some work on Flappit's, that is my wife's Multiplex Fun Cub. Now I know that anything glued in place is in the wrong place, is the wrong part, or is just about to auto-destruct. Therefore when I build things I tend to make everything repairable - or as others might say, over complicated. However with our Fun Cubs we just followed the instructions and glued the servos in place with cyano. One of Flappit's aileron servos has got an intermittent problem. It sometimes works, and sometimes it just sits and does nowt. It probably needs a good clean out - but that would mean removing it - so I may as well just give it a new servo. The servos are glued in to recesses on the wing undersides. The servos are on their sides. I can attack the glue around the servo with a scalpel or similar. The problem is the glue back face. Can I dissolve the glue without dissolving the wing? If not, can anyone suggest a suitable tool for hacking at the glue. I have tried to make an L-shaped piano wire 'knife' that I can slide down the servo edges and then rotate to attack the glue, but this was not a great success. Do I just 'dismantle' the servo in place with a dremel? I don't fancy this. I can see myself causing too much collateral damage. Plummet Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted October 8, 2013 Share Posted October 8, 2013 hello plummet-sometimes a man has to do what a man has to do............................me I would go around the sides as you say and then yank out the servo......bet it comes out ok...... ken Anderson ne..1 .......yank dept... Quote Link to comment Share on other sites More sharing options...
Plummet Posted October 8, 2013 Author Share Posted October 8, 2013 Posted by ken anderson. on 08/10/2013 20:01:40: hello plummet-sometimes a man has to do what a man has to do............................me I would go around the sides as you say and then yank out the servo......bet it comes out ok...... ken Anderson ne..1 .......yank dept... Are you saying that I should get Flappit to do it? P Quote Link to comment Share on other sites More sharing options...
IDD15 Posted October 8, 2013 Share Posted October 8, 2013 Hi Try using dental floss pulled backwards and forwards underneath the servo to act as a kind of saw. If it works you should remove the minimum amount of foam. Silicon glue is good for sticking in servos for this reason! Cheers Ian Quote Link to comment Share on other sites More sharing options...
Shaunie Posted October 8, 2013 Share Posted October 8, 2013 Could you get a piece of wire behind the servo and heat it electrically, basically hot wire it out? Either that or make some space around it and then twist until it lets go, don't forget you could take a chunk of foam out to make space and then glue it back in afterwards. Shaunie. Quote Link to comment Share on other sites More sharing options...
Sigh Posted October 8, 2013 Share Posted October 8, 2013 Insert a thin screw driver and push the servo out. Repeat it if needed(not more than three holes) and try not to harm the foam other than the small holes. When the servo pops out apply foam safe CA to the holes. Quote Link to comment Share on other sites More sharing options...
Plummet Posted October 9, 2013 Author Share Posted October 9, 2013 Ta folks. Dental hygiene for servos ? Well after all, their gears have teeth. Some good ideas. I will have a go. Plummet Quote Link to comment Share on other sites More sharing options...
Romeo Whisky Posted October 9, 2013 Share Posted October 9, 2013 And my suggestion is always to use a hot glue gun for fixing servos in foam models (EPS or Elapor etc). Don't use too much - just a small blob on each servo lug is usually enough. Fixes firmly but can be gently "peeled off" the plastic case of the servo if needed. Quote Link to comment Share on other sites More sharing options...
Sigh Posted October 10, 2013 Share Posted October 10, 2013 My mistake the middle one is power. This means it is safer than what i imagined Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted October 10, 2013 Share Posted October 10, 2013 Once you do get the old servo out, don't use cyno to stick the new one in - I've had a couple of servo's electrics fail after using cyno around them or the plugs in an enclosed space. The cyno fumes don't do electrical connections any good. Quote Link to comment Share on other sites More sharing options...
Plummet Posted October 10, 2013 Author Share Posted October 10, 2013 Posted by Bob Cotsford on 10/10/2013 09:23:59: Once you do get the old servo out, don't use cyno to stick the new one in - I've had a couple of servo's electrics fail after using cyno around them or the plugs in an enclosed space. The cyno fumes don't do electrical connections any good. I agree. I suspect that this may have caused the problem in the first place. "But the instructions said..." Plummet Quote Link to comment Share on other sites More sharing options...
nigel george Posted October 10, 2013 Share Posted October 10, 2013 Posted by Plummet on 09/10/2013 09:00:04: Ta folks. Dental hygiene for servos ? Well after all, their gears have teeth. Some good ideas. I will have a go. Plummet GRIN N BEAR IT comes to mind ,,,,, Quote Link to comment Share on other sites More sharing options...
Plummet Posted October 10, 2013 Author Share Posted October 10, 2013 ...bare it? Not while frying bacon, and not while using cyano or hot glue, thanks. Plummet Quote Link to comment Share on other sites More sharing options...
Bill_B Posted October 10, 2013 Share Posted October 10, 2013 Posted by Plummet on 10/10/2013 10:54:55: ...bare it? Not while frying bacon, and not while using cyano or hot glue, thanks. Plummet Oh dear, we appear to have plummeted to new depths! Quote Link to comment Share on other sites More sharing options...
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