Charles Jarman 1 Posted September 15, 2020 Share Posted September 15, 2020 Having purchased the EMS Fox V2 2300mm, I’ve finally got round to assembling it. But I’ve found an oddity! In that the flap servo cavities are not symmetrical to one another. The aileron cavities are symmetrical, it makes the servos look upside down to each other when you place the wings touching their leading edges to each other. not that it will have any effect on the flap travel, just found this odd! Normally you fit everything in a symmetrical fashion to keep a good balance. The other thing with this kit is the fitting of the control horns, I don’t think the screws are man enough! So will consider some slightly larger screws, if I can get them. keep safe, chaz Quote Link to comment Share on other sites More sharing options...
Shaun Walsh Posted September 15, 2020 Share Posted September 15, 2020 Posted by Charles Jarman 1 on 15/09/2020 13:36:01: Having purchased the EMS Fox V2 2300mm, I’ve finally got round to assembling it. But I’ve found an oddity! In that the flap servo cavities are not symmetrical to one another. The aileron cavities are symmetrical, it makes the servos look upside down to each other when you place the wings touching their leading edges to each other. not that it will have any effect on the flap travel, just found this odd! Normally you fit everything in a symmetrical fashion to keep a good balance. The other thing with this kit is the fitting of the control horns, I don’t think the screws are man enough! So will consider some slightly larger screws, if I can get them. keep safe, chaz It's to enable the use of Y leads to connect the aileron servos to a single channel and the flap servos to a single channel. The ailerons move in opposite directions for the same given input but the flaps move in the same direction for a given input so their physical orientation is different. Of course if each servo is assigned its own channel it doesn't matter which way round the servos are as each can be reversed individually. Quote Link to comment Share on other sites More sharing options...
Shaun Walsh Posted September 15, 2020 Share Posted September 15, 2020 For the screws try modelfixings.co.uk Quote Link to comment Share on other sites More sharing options...
Plummet Posted September 15, 2020 Share Posted September 15, 2020 Further to Shaun's reply ... We bought Funcubs, and on those the servo cutouts WERE symmetrical, which was a pain. You either had to source two servos with identical throws but opposite rotation, to buy and fit one servo reverser, or to open up a servo and reverse the wiring. Fortunately, I can solder. Plummet Quote Link to comment Share on other sites More sharing options...
Geoff S Posted September 15, 2020 Share Posted September 15, 2020 It's been a compaint I've long made that flap servos aren't oriented like Charles writes. On my Fun Cub I was able to use 2 channels for the the flap servos but it shouldn't be necessary. Geoff Quote Link to comment Share on other sites More sharing options...
MattyB Posted September 15, 2020 Share Posted September 15, 2020 Posted by Plummet on 15/09/2020 15:23:26: Further to Shaun's reply ... We bought Funcubs, and on those the servo cutouts WERE symmetrical, which was a pain. You either had to source two servos with identical throws but opposite rotation, to buy and fit one servo reverser, or to open up a servo and reverse the wiring. Fortunately, I can solder. Plummet Or just attach them to separate channels and reverse whichever one is the wrong way round - an awful lot easier... Edited By MattyB on 15/09/2020 17:37:35 Quote Link to comment Share on other sites More sharing options...
MattyB Posted September 15, 2020 Share Posted September 15, 2020 Posted by MattyB on 15/09/2020 17:37:18: Posted by Plummet on 15/09/2020 15:23:26: Further to Shaun's reply ... We bought Funcubs, and on those the servo cutouts WERE symmetrical, which was a pain. You either had to source two servos with identical throws but opposite rotation, to buy and fit one servo reverser, or to open up a servo and reverse the wiring. Fortunately, I can solder. Plummet Or just attach them to separate channels and reverse whichever one is the wrong way round - an awful lot easier... ...on the TX I mean, not with the soldering iron! Quote Link to comment Share on other sites More sharing options...
john davidson 1 Posted September 15, 2020 Share Posted September 15, 2020 Another solution is is to use a six or eight channel receiver, plug one one aileron into the usual receiver aileron slot and the other aileron into a spare slot. . Slave the second servo at 100%. no need to use reverse servos or reversing extension leads. You have then independent programming of each servo Quote Link to comment Share on other sites More sharing options...
Charles Jarman 1 Posted September 16, 2020 Author Share Posted September 16, 2020 Posted by Shaun Walsh on 15/09/2020 14:31:43: Posted by Charles Jarman 1 on 15/09/2020 13:36:01: Having purchased the EMS Fox V2 2300mm, I’ve finally got round to assembling it. But I’ve found an oddity! In that the flap servo cavities are not symmetrical to one another. The aileron cavities are symmetrical, it makes the servos look upside down to each other when you place the wings touching their leading edges to each other. not that it will have any effect on the flap travel, just found this odd! Normally you fit everything in a symmetrical fashion to keep a good balance. The other thing with this kit is the fitting of the control horns, I don’t think the screws are man enough! So will consider some slightly larger screws, if I can get them. keep safe, chaz It's to enable the use of Y leads to connect the aileron servos to a single channel and the flap servos to a single channel. The ailerons move in opposite directions for the same given input but the flaps move in the same direction for a given input so their physical orientation is different. Of course if each servo is assigned its own channel it doesn't matter which way round the servos are as each can be reversed individually. But of course! What a dough bag I am, thanks for clearing that up Shaun, only been modelling for a tad over thirty five years! chaz Quote Link to comment Share on other sites More sharing options...
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