Random Thought Thread

Nathan the Machinist said:
I think most people think I'm kidding, but I'm actually being completely serious. I haven't memorized most of the conversions but I do know a couple of the constants so I have used those constants to make the conversions and it's really not difficult if you have a calculator in front of you.

I know the density of common materials. But I went to school in the '90s so it's in pounds per cubic inch. But I happen to know that water is .0361

I don't use centimeters or heptameters, my mind does better with millimeters and meters

So the math is 25.4 * 25.4 * 25.4 gives me 16,387.064 cubic millimeters weighs .0361 lbs.

So, 16,387.064 mm divided by 1,000 (16.387 cm) weighs .0361 lbs. (unnecessary calculation but I always work in mm)

So 16.387 (grams in a cubic inch) is equal to .0361 (pounds in a cubic inch)

Divide both by .0361, you get 453.9 grams is equal to 1 lb.

That's .454 kilograms per pound.

It sounds more complicated than it is and it pretty quick with a calculator. There's always risk of conversion errors but if your significant digits aren't crazy it's okay.
Click to expand...

In metric land over here when it comes to building or making anything it’s always measured in mm.

Actually now that I think of it, cm are rarely used for anything. It’s mm until that becomes impractical and we move straight to metres.
 
Last edited:
MV5BNmEzZjIzYzQtOGI0MS00NmQ5LWFmYjktYTEwNTUxNDhmY2IzXkEyXkFqcGc@._V1_.jpg
 
Just a random fyi:

Pulled my generator out to run it a bit for the upcoming winter only to find out that it had lost magnetism and wasn’t producing any electricity.

It’s one of those 11,500 watt portable units.

I’ve known for a long time about the corded drill trick so thought I’d give it a try.

Start the generator and plug in your drill. Squeeze the trigger and manually turn the drill chuck clockwise. The drill is suppose to back feed electricity into the genny causing the rotor to magnetize again. I did this for about a minute with no luck. Then I put a drill bit in the corded drill and then put the other end of the bit in my battery powered drill and tightened both chucks.

Pulled the trigger on the corded drill and then began spinning my other drill. After about 30 seconds the corded drill started right up.

Ran the genny for about 20 minutes with a 2k watt heater connected and it’s working perfectly.

In case this ever happens to anyone try this first because it’s the first thing a generator repair shop will do.

That is all…
 
adluginb said:
Just a random fyi:

Pulled my generator out to run it a bit for the upcoming winter only to find out that it had lost magnetism and wasn’t producing any electricity.

It’s one of those 11,500 watt portable units.

I’ve known for a long time about the corded drill trick so thought I’d give it a try.

Start the generator and plug in your drill. Squeeze the trigger and manually turn the drill chuck clockwise. The drill is suppose to back feed electricity into the genny causing the rotor to magnetize again. I did this for about a minute with no luck. Then I put a drill bit in the corded drill and then put the other end of the bit in my battery powered drill and tightened both chucks.

Pulled the trigger on the corded drill and then began spinning my other drill. After about 30 seconds the corded drill started right up.

Ran the genny for about 20 minutes with a 2k watt heater connected and it’s working perfectly.

In case this ever happens to anyone try this first because it’s the first thing a generator repair shop will do.

That is all…
Click to expand...
I had never heard of that trick- thanks for sharing the tip.
 
You must log in or register to reply here.
Back
Top