Model Boat Mayhem - Forum

Dry Dock / Shipyard: Builds & Questions => Working vessels R&D: => Topic started by: Gopher on October 06, 2012, 06:24:16 PM

Title: Magnetic On-/Off-Switch
Post by: Gopher on October 06, 2012, 06:24:16 PM
Has anyone heard of these and if so where can I aquire one from, it would save me having to take the top off my tug
Title: Re: Magnetic On-/Off-Switch
Post by: grasshopper on October 06, 2012, 06:33:39 PM
What you're looking for would be a reed switch, a glass enclosed, magnet actuated switch you can fit under the deck or similar and place a magnet nearby and it'll switch your system on. Something like this might do it.....

http://uk.farnell.com/hamlin/drr-129/reed-switch-no-400vdc-3a-100w/dp/4332337

Another alternative would be to use a rotary switch disguised as a deck fitting, like a bollard.


Title: Re: Magnetic On-/Off-Switch
Post by: flashtwo on October 06, 2012, 06:44:34 PM
Hi,

You made need the reed relay to operate a higher current auxilliary relay, if your tug motors pull more than 3 amps.

Ian.
Title: Re: Magnetic On-/Off-Switch
Post by: grasshopper on October 06, 2012, 06:56:37 PM
Most people would only use the reed switch to control the radio system, 3 amps would be ample. The motors should be switched by your ESC/s and not affect the reed switch rating, but using a relay would be advisable is you wire it as Flash has suggested.
Title: Re: Magnetic On-/Off-Switch
Post by: Subculture on October 07, 2012, 08:27:50 AM
You can purchase ready-made magnetic switches from Engel. They sell them for model submarines but they are little bit expensive. You can make a simple one yourself using a pair of reed switches and a bistable relay. The cost is likely to be no more than about 5-10.
Title: Re: Magnetic On-/Off-Switch
Post by: Gopher on October 07, 2012, 05:14:15 PM
Thank you all for your replies, being a very new newbie to the hobby I think I will stay with the switch until I have a lot more experience and knowledge, I ant arf gorra lot of learning to do