In theory this would work....

The Green GT · Mar 20, 2007

So today I left my lights on at school, battery died, blah blah. I just jumped in front of a car and held them at gunpoint while they jump started my car.

But I was thinking. What if i were to take my belt off, attach a cordless drill to my alternator pulley bolt, and turn it for a few minutes with the key on. Would this actually work? I cant see why it wont, but there are alot of things I cant see. Not that I plan on doing it but Im just curious.

Guero · Mar 20, 2007

LOL!!!!!!!!!!!! Can't answer your question.

95yellowGTS · Mar 20, 2007

are you retarded? haha...

87_GT · Mar 20, 2007

why didnt you just pop your car in nuetral, get a running start with it, then drop the clutch in 1st. should start right up, right??

xr8d302 · Mar 20, 2007

please tell me the gunpoint story is far from the truth

man you're crazier than guero

blksn955.o · Mar 20, 2007

87_GT said:
why didnt you just pop your car in nuetral, get a running start with it, then drop the clutch in 1st. should start right up, right??

pop starting on a dead batt. is not going to work as the inj. and fuel pump needs elec. tor run. along with the eec. If there is enought to work those (hear the pump prime) than maybe but not always.

GreenStangGT · Mar 20, 2007

The Green GT said:
So today I left my lights on at school, battery died, blah blah. I just jumped in front of a car and held them at gunpoint while they jump started my car.

But I was thinking. What if i were to take my belt off, attach a cordless drill to my alternator pulley bolt, and turn it for a few minutes with the key on. Would this actually work? I cant see why it wont, but there are alot of things I cant see. Not that I plan on doing it but Im just curious.

I think it would, but I'm not sure how fast you'd be able to get that pulley spinning with a cordless drill... hmmm.

HISSIN50 · Mar 20, 2007

xr8d302 said:
man you're crazier than guero

I don't think he can have that title till he blows off someone's body part and has little kids posing on his twig and berries.

The Green GT · Mar 20, 2007

I know there are easier ways to start it. I dont plan on trying it, I was just curious to see what you guys though about it.

And the gunpoint thing isnt serious. lol

Aliate X · Mar 20, 2007

blksn955.o said:
pop starting on a dead batt. is not going to work as the inj. and fuel pump needs elec. tor run. along with the eec. If there is enought to work those (hear the pump prime) than maybe but not always.

Once the alt starts moving it starts making power. It might take a sec of rolling in 1st, but it will start.

Therian · Mar 20, 2007

If I read JT's response correctly (from the other topic of the same name...heh) then the drill wouldn't be able to spin the belt fast enough in order to reach the speed the alternator needs to create a charge...

blksn955.o · Mar 21, 2007

Aliate X said:
Once the alt starts moving it starts making power. It might take a sec of rolling in 1st, but it will start.

Tried it before in a parking garage...I had to jump it and buy a new batt. When the lights get left on it will drain the batt. further, more so with int. lights as they will drain the batt. to a fine-ite point.

mo_dingo · Mar 21, 2007

Clutch starting will work no matter how dead the battery is.

But a battery that is completely dead takes at least 24 hours to fully charge, which means it needs a lot of time just to get back above 10 volts. The alternator spins at probably 10k rpm's , and I doubt your drill spins that fast.

Now if you could hook it up to a router, that would be a different story. That would definitely work!!
Scott

reddy351 · Mar 22, 2007

The problem with using all these little 1hp and less electric motors is that when the alternator IS making electricity, it requires more power to turn the alt shaft. It doesn't freewheel. Say you have a motor that makes 1 peak hp, you will be at a deficit if the alt requires 10hp to turn it to charge the battery. Also, to get a 3000 rpm motor to turn another shaft at 10k-15k rpms, you would need to put a pulley on it that is 5 times the diameter of the alt pulley. That would also turn the power lugging ability of the motor to where it would not be able to turn the alt pulley at all.

In short, you would need:
1) A motor capable of producing somewhere about 10 hp at about 10000 rpms.
2) A motor capable of producing MUCH more than 10 hp at 3000 rpm AND some sort of tranmission to step the rpms up to 10k-15k rpms.
3) Gigantic monkey arms to hold said motor and keep enough tension on the leather belt to keep it from slipping, so that all of the power will make it to the alternator.

No. It wouldn't work. Sorry.

Adam95GT · Mar 22, 2007

what about a decent audio capicator... they hold a charge... a lethal one at that

blksn955.o · Mar 22, 2007

mo_dingo said:
Clutch starting will work no matter how dead the battery is.

But a battery that is completely dead takes at least 24 hours to fully charge, which means it needs a lot of time just to get back above 10 volts. The alternator spins at probably 10k rpm's , and I doubt your drill spins that fast.

Now if you could hook it up to a router, that would be a different story. That would definitely work!!
Scott

Didnt work at all for me eec wouldnt turn on, nothing...went down a few levels of the garage before I just called a buddy...good thing it was a bach party and several people were there .

Side note...anyone been in a car that revs/makes power high enough that the Alt. TURNS OFF...kinda scary

Engel · Mar 22, 2007

all i can say is wow.

HISSIN50 · Mar 22, 2007

I didnt think an alternator used that much HP to turn, even at max output (I once crunched the numbers to make a point on an E-fan vs mechanical fan, 2G vs 3G thread).

mackey · Mar 22, 2007

Your not going to find an electric drill to turn your alt at over 2k RPMS for a long period of time to charge your battery.

Remember the Pulley on the alternator is small for a reason!

The Green GT · Mar 23, 2007

You arent putting the drill on the pulley, you are putting it on the bolt holding the pulley on. The alt will turn for every time the drill turns unless there is a gear reduction system in the alt.

In theory this would work....

The Green GT

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