Model Boat Mayhem
Technical, Techniques, Hints, and Tips => The "Black Arts!" ( Electrics & Electronics ) => Topic started by: brian a on January 11, 2010, 07:44:15 pm
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Hi, can anyone help with a diagram showing twin motors, 4 micro switches, 2 each side, opperated by rudder servo. half turn shuts down inside motor, full turn puts same in reverse. I remember seeing this set up a few years back but never got hold of the diagram.can anyone help?
brian a.
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It would be quicker with an ACTion P94. :-))
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Hi Brian
This link covers your problem in detail
http://website.lineone.net/~alanann/revswtch.htm
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It would be quicker with an ACTion P94. :-))
Na Dicky if he has 2 ESC already he just needs one of the p40c
http://www.action-electronics.co.uk/mixers.php
aye
john e
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thank you very much longshanks, thats what i was looking for. ref. action, they would do the job but the cost comparedto 4 micro switches. thanks anyway dickyd & bluebird you work it out. this hobby is dear enough as it is. anyway once again many thanks to all.
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Hi ya Brian A - there is only one problem with using micro-switches and that is the main amperage draw on your main motors which will be fed through these micro-switches. If you are using heavy amperage motors, say drawing 15 amp, you are going to require rather large micro-switches. This is due to the fact if you put your rudder over full belt when the boat is at top speed, and it activates one of the switches, apart from the initial surge on the motor - trying to twist itself out of the mountings - is just about going to destroy the micro switch. So do make sure you have heavy enough switches.
The beauty of a mixer which only cost approx £24 - it doesnt matter if the motors are going flat out - you can still put your rudders full over, without any fear of destroying switches, because it is your speed controllers which should be up to the job of handling the amperage, which take the brunt.
But as they say, the choice is yours.
aye
john e
bluebird with the been there and done that tee shirt ;) :-)) %) :o
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The misconception about microswitches it that they are small. For their current carrying ability, they aren't. The "Micro" bit refers to the very short transit time between one state and the other, being measured in microseconds (granted, quite a lot) rather than milliseconds. They bounce quite a bit as well, so need fitting with spark quenching components if used with an inductive load, like a motor, to ensure a long and happy contact life. They are, of course, normally "sealed for life", meaning that there's nothing to mend. Once its broken, its dead.
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I,m totaly confused now its all getting a bit beyond my thinking, maybe i will talk to ACTION and save my pennies up. the set up i intend to use is , 1 speed controller, 2 motors.a mixer will save a lot of wiring.thanks to all for info.
brian a.
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To help with removing the confusion read this article and then talk to Dave at ACTion! ;)
Click this link: http://www.action-electronics.co.uk/pdfs/Twins%20Ver2.pdf (http://www.action-electronics.co.uk/pdfs/Twins%20Ver2.pdf)
(by the way to use a mixer you will need a speed controller for each motor.)
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Not if you use a P94. Pete M
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thanks to all you guys for your advice, i think i will go with action after a phone chat the other day. lucky i have a birthday coming up, few hints should do the tric
brian a.