electronics

**gizmo** · 20th June 2011, 16:22

how much does an electonize 30a weigh

**harry hills** · 20th June 2011, 21:14

not enough to matter

**gizmo** · 22nd June 2011, 12:52

what wire gauge do I need if I'm running 2 18v bateries in parrallel

**maddox10** · 22nd June 2011, 16:04

Originally Posted by gizmo

what wire gauge do I need if I'm running 2 18v bateries in parrallel

The DC voltage we run doesn't have much to do with the wire gauge, it's the amperes that decide.
In the industry , 10 amperes per mÂ² is seen as on the edge.

So, how much amps do you expect to draw?

**gizmo** · 22nd June 2011, 16:18

The batteries say 1.3Ah and I'm using the motors from the same drill

**maddox10** · 22nd June 2011, 16:59

That ain't the information needed for wire gauge either.
It just means that each battery theoreticaly contains 18V*1.3ah= 23.4 watts.

Those probably are very cheap batterydrills?
If so, the batteries can achieve maybe C15, meaning a max of 2 times 19.5A for 3 minutes ,and hopefully survive that. (not the first of those I see go up in smoke and molten plastic)

Meaning you can wire the robot with 4 mmÂ² wire.

**gizmo** · 9th August 2011, 15:36

which is better as a drive motor, a cheap 18v drill motor at 18v or a Â£10 argos drill at 18v

**maddox10** · 9th August 2011, 15:46

Depends on wheelsize and support.

But a cheap drill overvolted, we have seen that before. If the motor doesn't melt, the gears will fail, and if those are replaced with metal gears, the pins will work lose from the planet carriers.