| Author |
 Topic  |
|
cirvin
Nobel Prize Winner
USA
1542 Posts |
 Posted - Jul 29 2003 : 11:46:36 PM
|
alas, i am too young an carefull to have siouch grea stories, but there was this one time when me and my frend where working on the first model of our go kart, we put a windsheild on it, but it was more fitted to me, because i was sitting on it at the time. anyway, my freind was going to test it. now, i am only 5' 3" and my frend easly clears 6 so his forehead was right at the top bar of the widsheild. we went directly to pushinf it down this hill next to his house. it was only after i had given the start push that i realized whe had forgotten to retighten the bike wheels. suddenly the back wheel was very loose and the fron one POPPED OFF!!!! it imeadately stopped, and his forehead slammed on the top bar of the widsheild. lucily it was made of wood and haistily thrown together. it brole into a bunch of peices and that was when we retired the old design.
|
 |
|
|
Kale
Nobel Prize Winner
Canada
795 Posts |
Posted - Jul 30 2003 : 10:41:28 AM
|
Well at least he didn't end up chewing on the steering wheel... 
|
|
|
|
Nerf Smurf
Mad Scientist
USA
390 Posts |
Posted - Jul 30 2003 : 1:49:16 PM
|
i dont know about explosions but. Some time ago we were poping firecrackers and fireworks.
one landed on the wood thats in the middle of the street (that they use for dividers when making the street). that firecracker shot a blaze over that wood. I was over it. I almost cought on fire.
We have the gift to build what we want. |
|
|
|
cirvin
Nobel Prize Winner
USA
1542 Posts |
Posted - Jul 30 2003 : 2:25:59 PM
|
steering wheel? what steering wheel? we used a 2x4 ;)
next stop: nobel prize winner! |
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jul 31 2003 : 09:56:25 AM
|
I cringe everytime I see someone jumpstart a car. No one ever does it properly. Though I am guilty of once connecting a battery backwards. My old '78 RX-7 had battery cables that were rather ambiguous with regards to polarity, and I ended up connecting a new Optima Red Top backwards. Luckily, there is nothing high-tech enough in that car to be damaged.
|
|
|
|
Kale
Nobel Prize Winner
Canada
795 Posts |
Posted - Jul 31 2003 : 1:28:06 PM
|
Isn't there also an order that you are suppose to connect the cables in? I heard that it was +ve first, THEN ground to avoid sparks which could potentially set off any Hydrogen the battery may be leaking.
|
|
|
|
BEatonNo1
Nobel Prize Winner
USA
1133 Posts |
Posted - Aug 04 2003 : 01:19:31 AM
|
well every time I have to jump off, I first ground both cars then connect the + on the running car then on the dead car
|
|
|
|
cirvin
Nobel Prize Winner
USA
1542 Posts |
Posted - Aug 04 2003 : 1:55:47 PM
|
i trie to jump a car properly, but my frends dad took the neg off the engine block and did it wrong.
next stop: nobel prize winner! |
|
|
|
Brian
Apprentice
USA
106 Posts |
Posted - Aug 05 2003 : 04:55:46 AM
|
Well, I'm too young to have created any major problems/explosions myself, but one day part of the element on our oven overheated. I was alerted to a problem from screams and 60Hz buzzing... By the time I got downstairs, is had stopped sparking, but smoke was still pouring out. My mom said it reminded her of arch welding. Plus it ruined some perfectly good yams 
|
|
|
|
n/a
DELETED (Inactive)
4 Posts |
Posted - Aug 22 2003 : 12:48:29 AM
|
I knew some people who hot wired one of their coworker's electrolytic collection to the AC through a drawer operated microswitch. When he opened the drawer, there was one hell of a bang followed by a shower of "feathers" of what used to be the insides of the capacitors.
Ignorance is bliss, whatever that is. |
|
|
|
Kale
Nobel Prize Winner
Canada
795 Posts |
Posted - Aug 22 2003 : 4:01:45 PM
|
Hehe... capacitors are such fun.
|
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Aug 22 2003 : 4:52:26 PM
|
Proper way to jumpstart:
1. + on dead to + on good.
2. - on good battery to cable
3. - cable to engine block of dead
Keeps sparks away from the battery, and provides a more "natural" current flow. Jumpstarting is funny, because my parents used to have a friend (idiot) who insisted that + goes to - and - to positive. Of course, one day he tried it and both batteries exploded...
|
|
|
|
Kale
Nobel Prize Winner
Canada
795 Posts |
Posted - Aug 25 2003 : 4:18:56 PM
|
What would have made the batteries go up? How would the reverse bias cause an explosion?
|
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Aug 26 2003 : 11:34:38 AM
|
A direct short between two batteries means that theres probably 2000A through those cables. Copious amounts of heat produced in the cells. And if one was damaged (shorted or dead cell), then it would have burst. Couple that with the hydrogen trapped in the battery and you have boom...
|
|
|
|
Kale
Nobel Prize Winner
Canada
795 Posts |
Posted - Aug 26 2003 : 11:56:30 AM
|
Ah! Right. + to -, - to + puts the batteries in series with each other, then shorts them out. Eeep!
24V = I * R where R is probably a tiny fraction of an ohm. So yeah, a lot of current. Bzzzt!
|
|
|
|
Topic |
|
Largest explosion
