![]() ![]() Heres a link to ao bog standard 12 v screwdriver. Its often more than you'd think as driving screws actually needs a bit of torque. You can get luck and find that one shop or dealer lists more information than the other for a screwdriver that looks like yours.Īnd what you need to find is the torque rating (or maximum moment or whatever they call it). If you know what yours looks like, go online and try and find one that looks similar (and costs similar). That sounds like the battery.irrespective of the maker, most cheap brands of screwdriver actually use the same or similar motor. And driving a heavy vehicle up a hill at 15 km/hr is going to suck the life out of any battery you can get in there in a shorter time that you might think. Its not how many amps such a battery can s how many minutes you can draw that current for. The maximum draw on a car battery can be way more than 40 amps. if its a 45 Ahr battery then you could draw 90 amps for 30 minutes. Im not sure about maximum current draws on 12 V batteries.but dont mistake Ahours for Amps. It must surely be very fast for an armoured vehicle. At 12 V, and W=VI then you will need motors of a big size (because they could draw in excess of 100 A).Īre you sure you want a speed of 15 km/hr? Thats like 4 m/s. then thats going to take, roughly, over a 1000 W of power needed to get it up the hill at that speed. If the tank is 60 kg and you are using 12 v motors and lets say you sent it up a slope of 30 degrees at a speed of 4 m/s (15 km/hr from your first post).
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