12 volt motor

This topic has 12 replies, 10 voices, and was last updated 22 January 2014 at 10:41 by Ian S C.

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19 January 2014 at 13:17 #141103
ron grimshaw
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@rongrimshaw76129
Hi

Lets start by saying I am not well up on electrics. I am a member of a air rifle club and have been asked could I make a system for moving the target about from the shooting position to the rear wall, to do this I will need some electrical motor that are reversible and we would like to use 12 volts, my first thought was wiper motors, but I would need instruction on the wiring.

1/ what other motors could I use.

2/ I would need wiring diagram.

Ron
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19 January 2014 at 13:17 #7014
ron grimshaw
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@rongrimshaw76129
19 January 2014 at 13:51 #141105
Speedy Builder5
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@speedybuilder5
I think I would go for window winder motors (pancake type) easily reversible, doesn't have / need a park position, easy to put a simple pulley wheel onto it, plentifull and easy to get to. Also used in breadmakers.

As for wiring, you would need a microswitch at each end of the run to stop the motor and a fwd / reverse switch as used on the car. Perhaps put a fuse in the circuit for good luck. You may be lucky enough to strip the lot out of a scrap car wiring loom and all. Don't choose newer Renaults as all their electric bits run through a "Habitable unit". This allows thinner wires between switch and sensors and gets a bit complicated. Choose older cars where its all been kept simpler.

BobH
19 January 2014 at 14:02 #141106
Kevin Bennett
Participant
@kevinbennett25223
hi a old cordless drill it runs on low voltage as forward and reverse, strip it out and fit in a box mount the motor with it's gearbox.

it is a cheep option and I am sure lots of members have old drills the battery is shot I have 3 in my workshop

ty kevin
19 January 2014 at 19:32 #141126
JC Uknz 1
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@jcuknz1
I acquired a number of 24 volt DC motors from the salvage/recycling of photocopiers which run well on 12 volt. The older models are better becuase they have less electronics. Lots of wiring in them, too … a treasure trove for model engineers with rods, belts, cogs and gears galore, not to mention switches too. Unfortunately of less use were the step motors they also had for an electrics illiterate like me
19 January 2014 at 20:04 #141136
Bazyle
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@bazyle
I know the world has become seriously lazy but couldn't you make a system that involves a person just winding a handle.
19 January 2014 at 20:18 #141137
jason udall
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@jasonudall57142
Bazyle..my thoughts..didn’t like to say it..
But tbh most of the system is the same with or without the motor…pulleys string more pulleys winding gear ..handraulic or otherwise..
19 January 2014 at 23:12 #141155
stevetee
Participant
@stevetee
I think you'll find it's not just Renault…..Just about everything after 2004 has a body systems interface, plc controllers and all that CANBUS stuff.
20 January 2014 at 09:36 #141174
Michael Gilligan
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@michaelgilligan61133
Posted by ron grimshaw on 19/01/2014 13:17:26:

… a system for moving the target about from the shooting position …

.

Bazyle / Jason

Wouldn't a mechanical version get rather unwieldly ?

MichaelG.

Edited By Michael Gilligan on 20/01/2014 09:37:55
20 January 2014 at 09:37 #141175
jason udall
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@jasonudall57142
Mmm radio controlled car?
20 January 2014 at 09:38 #141176
Michael Gilligan
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@michaelgilligan61133
Posted by jason udall on 20/01/2014 09:37:53:
Mmm radio controlled car?

.

Much better

MichaelG.
20 January 2014 at 20:11 #141223
Sub Mandrel
Participant
@submandrel
The original question was the wiring.

Assuming a 12V or similar motor, you need a 2-pole changeover also known as a 2-pole double throw switch (2PDT).

This has six terminals, typically arranged as two rows of three:

1 2 3

4 5 6

A quick check with a multimeter (or a battery, bulb and bit of wire) will show that he effect of the switch is to short the middle pins (2 and 5) to either 1 & 4 or 3 & 6, depending on the direction of the switch toggle.

Connect battery + to 2 and battery – to 5

Connect one side of the motor to 1 and 6

Connect the other side of the motor to 3 and 4

The switch will now act to reverse the motor

An on/off switch in one of the battery leads will provide your on/off facility

If you want a limit switch to stop the motor at each end of its run the then fit one of these between 1 and the motor and the other between 6 and the motor.

Test the limit switches,and if the motor stops when heading away from them reverse the battery connections.

Neil
22 January 2014 at 10:41 #141342
Ian S C
Participant
@iansc
The switch I made for the electric hoist above my lathe uses 4 micro switches, the hoist uses a 36V garage door opener motor(looks like a wiper motor, but with a sprocket sticking out the side of the gear box), I run it on 18V, mainly because that is the voltage of the workshop low volt supply, lifts my 8" chucks a lot easier than I can.

Ian S C
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