Josip Vrandecic -Mes Posted April 14, 2012 Share Posted April 14, 2012 Hi All, I'm relatively new leccy flyer...so please..need technical advise: Can I install en external switch for Lipo battery on fuselage?(e.g. only plus wire). Because,in case of emergency or any other,I have to remove the wing (two screws) to switch off the battery.....it is a lot of time... Thanks in advance Jo Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted April 14, 2012 Share Posted April 14, 2012 Quite commonly done, I believe. Various methods - U link using 4mm or suitable sized plugs and sockets on a short u shaped piece of wire, shorted Deans plug into a socket etc. Quote Link to comment Share on other sites More sharing options...
Anthony Billings Posted April 14, 2012 Share Posted April 14, 2012 Hi Jo, making your own removable link is the best way to go, remember that a switch would have to deal with 30, 40 amps or higher, and that would need quite a large switch which would increase weight. I have seen the magnetic type on the net which claims to get over this problem but they are expensive. So I would go with Martin and fit a "U" link. Tony Quote Link to comment Share on other sites More sharing options...
Josip Vrandecic -Mes Posted April 14, 2012 Author Share Posted April 14, 2012 Hi Martin and Tony ,Thanks a lot,You have solved my dilemma,also thanks for your time. Cheers Jo. p.s.I will use a "U" link for plug XT one. Edited By Josip Vrandecic -Mes on 14/04/2012 12:14:30 Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted April 14, 2012 Share Posted April 14, 2012 The shorted deans plug fitted between battery & ESC is a good solution but they can be quite hard to mate so make sure the fusealge is reinforced around the mounting....... This flush mounting box might be interesting (scroll about 2/3rd down the page)...... Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted April 14, 2012 Share Posted April 14, 2012 Here's my version Josep, 2x 4mm plugs with a piece of wire soldered accross. I then glue the two insulated sockets into a block and leave the twin plug in while the glue dries. This sets the spacing spot on. The black one here was for charging A123's in situ, I'm not going to be doing that now... Edited By Chris Bott - Moderator on 14/04/2012 12:25:49 Quote Link to comment Share on other sites More sharing options...
Josip Vrandecic -Mes Posted April 14, 2012 Author Share Posted April 14, 2012 Thanks Steve and Chris, it is important to know if I may use any form of switches ,respecting high amperage. p.s No flying today....hard rain over Central Adriatic.. All the best Jo Edited By Josip Vrandecic -Mes on 14/04/2012 12:29:49 Quote Link to comment Share on other sites More sharing options...
Romeo Whisky Posted April 14, 2012 Share Posted April 14, 2012 There is another very simple way of achieving the same end if you use standard 4mm gold connectors between battery and ESC. Just route the red ESC lead through a hole in the side of the fuselage, and make another hole for the red battery lead so that they can be connected or disconnected externally. I've used this for years on one of my models. It might look a bit crude on the ground, but can't be seen when it's flying, and there is no danger of a swtich not being able to cope with the current. I don't have a photo of this in my album, but if you need to see a pikky I'll happily take one and post it below. RW Quote Link to comment Share on other sites More sharing options...
Josip Vrandecic -Mes Posted April 14, 2012 Author Share Posted April 14, 2012 Dear Romeo Whisky,thanks for the clarification,no need a pics,I understood all,when I do it I send a pics.Thanks for you kindness and time.... Cheers Jo. Quote Link to comment Share on other sites More sharing options...
Mark R Posted April 15, 2012 Share Posted April 15, 2012 RW liked your suggestion....very simple answer Quote Link to comment Share on other sites More sharing options...
Romeo Whisky Posted May 8, 2012 Share Posted May 8, 2012 Here's the photo Quote Link to comment Share on other sites More sharing options...
ross blackwell Posted May 8, 2012 Share Posted May 8, 2012 Not elegant as you suggest but certainly practical & safe:it can take a while to get the wing off especially if it has strut support.I'm with you Josip.Just heading into winter down here in Tassie so will be looking at my fleet of helis to occupy my leasure time & maybe set up a new fixed wing model. Quote Link to comment Share on other sites More sharing options...
Josip Vrandecic -Mes Posted May 31, 2012 Author Share Posted May 31, 2012 Hello All, thanks everyone for the advices....maybe not for You,but for me is big deal...DIY...I used 220V 10A switch,lightweight ,durable and very soft on the balsa fus...here a pics : Cheers Jo Edited By Josip Vrandecic -Mes on 31/05/2012 12:41:42 Quote Link to comment Share on other sites More sharing options...
DH 82A Posted May 31, 2012 Share Posted May 31, 2012 How many Amps are you putting through that switch at full throttle ? Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted May 31, 2012 Share Posted May 31, 2012 Like DH82 I'm a bit worried here Josip.....I doubt that switch is man enough for the job. Does it have any DC ratings on it?? DC & AC are very different to switch....probably not an issue on a 3S battery but DC switching generally needs bigger gaps than AC I think some of the other methods would be a better if less neat solution. IMHO you will melt that switch over time & I guess if that switch fails all power to the ESC & hence the radio (via the BEC) will fail too.......not good... Quote Link to comment Share on other sites More sharing options...
Josip Vrandecic -Mes Posted June 2, 2012 Author Share Posted June 2, 2012 Dear and Respected Steve and DH 82A ,according to Yours advices ,I replaced the switch with a stronger one...now is 12V 20A DC (from a car's electrical equipment)...There were no problems before,but I'm not stubborn,there will be no now...I hope...anyway I keep You in touch... Thanks indeed Thanks for Your time Cheers Jo Quote Link to comment Share on other sites More sharing options...
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