science project

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barnym17
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science project

Post by barnym17 » Wed May 09, 2018 6:52 am

My 9 year old grandson learned the principles behind a simple inductive ignition system when we did his science project today. Also how to solder, use heat shrink, and get his mom to grab the plug wire and get bit lol.
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barnym17
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Re: science project

Post by barnym17 » Wed May 09, 2018 7:06 am

The button acts as the ignition switch, the flasher makes and breaks the primary resulting in spark as long as you hold the button down.

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Re: science project

Post by ijames » Wed May 09, 2018 10:07 am

=D> =D> =D>
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Re: science project

Post by Zmechanic » Wed May 09, 2018 10:56 am

That's a great science project. Some good knowledge passed along! =D>

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Re: science project

Post by Tuner » Wed May 09, 2018 11:36 am

barnym17 wrote:
Wed May 09, 2018 6:52 am
My 9 year old grandson learned the principles behind a simple inductive ignition system when we did his science project today. Also how to solder, use heat shrink, and get his mom to grab the plug wire and get bit lol.
To provide him the opportunity to begin understanding the difference between inductance and capacitance........

If he adds a capacitor in the circuit, from coil - neg. to ground, AKA "condenser" in points ignition, it should make hotter spark and increase life of the mechanical contacts in the flasher. (unless that flasher is the solid state electronic type, then ... nevermind ...)

The next task in the lesson plan is for him to figure out why the capacitor increases contact life.

Using a set of actual ignition contact points in the circuit as an alternative to the flasher will allow visually observing the arcing between the contacts as they open to break the circuit, so a comparison between with and without the capacitor can be easily recognized in the primary circuit and also in the spark plug gap in the secondary circuit .

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Re: science project

Post by B Original » Wed May 09, 2018 11:51 am

Tuner wrote:
Wed May 09, 2018 11:36 am

The next task in the lesson plan is for him to figure out why the capacitor increases contact life.

Using a set of actual ignition contact points in the circuit as an alternative to the flasher will allow visually observing the arcing between the contacts as they open to break the circuit, so a comparison between with and without the capacitor can be easily recognized in the primary circuit and also in the spark plug gap in the secondary circuit .
Wrong! Not exactly, its time for a distraction now where you show him how to hold the charged capacitor and tell him to hand this to your grandma while asking for another beer for grandpa :lol: [-X :lol:

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Re: science project

Post by FC-Pilot » Wed May 09, 2018 1:14 pm

I love it! Being the I work with kids in the Boy Scouts, well it used to be boy scouts and is not called Scouts BSA, I should keep something simple like that around to teach them with. It is great to pass along the science that many of us take for granted. Probably the best post I have seen in a while. Not because of what it taught me, but because of the effect it might have on the future.

Paul
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Re: science project

Post by CamKing » Wed May 09, 2018 2:02 pm

Hopefully, the teachers judging the projects will be smart enough to understand it.
Years ago, my son's project showed how sound waves could pass thru a solid mass, and move objects on the other side of the mass.
His science teacher said he should have won, but it went over the heads of the judges.
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Re: science project

Post by MTENGINES » Wed May 09, 2018 2:48 pm

CamKing wrote:
Wed May 09, 2018 2:02 pm
Hopefully, the teachers judging the projects will be smart enough to understand it.
Years ago, my son's project showed how sound waves could pass thru a solid mass, and move objects on the other side of the mass.
His science teacher said he should have won, but it went over the heads of the judges.
And most here. :D

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Re: science project

Post by Zmechanic » Wed May 09, 2018 6:47 pm

MTENGINES wrote:
Wed May 09, 2018 2:48 pm
CamKing wrote:
Wed May 09, 2018 2:02 pm
Hopefully, the teachers judging the projects will be smart enough to understand it.
Years ago, my son's project showed how sound waves could pass thru a solid mass, and move objects on the other side of the mass.
His science teacher said he should have won, but it went over the heads of the judges.
And most here. :D
:roll:

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Re: science project

Post by Circlotron » Thu May 10, 2018 1:01 am

Connect a points condenser to the green and white wires of the flasher can. Also, given the very slow spark rate, you don’t need 18 volts worth of battery. Connect the three of them in parallel for 6 volts but 3 times the amps capacity.

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Re: science project

Post by barnym17 » Thu May 10, 2018 5:51 am

I got told that day he needed to do a project, this was a hurry up deal with stuff I had laying around. I didn't have a condenser looked high and low in the garage. I did one with his dad eons ago using an msd box and dual point distributor to show the output difference between inductive and capacitive discharge units. Little dude loves fast cars, 4 wheelers etc, he is happiest when we are in the garage or at the track.Unless its football season lol.

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Re: science project

Post by barnym17 » Sat May 12, 2018 8:40 am

Results=A 2nd place in judging.

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