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We want to build a pumpkin chunkin' launcher from Tesla Coil parts (and maybe some more). We were originally thinking a rail gun would be the closest thing to make it, but from the designs I've seen it would have to be massive to fit a pumpkin.

I also know of electric motors which turn electrical energy to kinetic energy, but I don't see how we could use this could launch a pumpkin.

Are there any other ways to turn Electrical Energy to Kinetic Energy so we can launch a pumpkin?

Could you please let me know how I can make my question more on topic before downvoting?

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closed as too broad by Voltage Spike, DerStrom8, brhans, alex.forencich, JIm Dearden Sep 13 '16 at 19:44

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    \$\begingroup\$ @laptop2d I thought I showed research by stating my ideas (rail gun and electric motors). How else should I research? \$\endgroup\$ – Seth Kitchen Sep 13 '16 at 19:20
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    \$\begingroup\$ @SethKitchen No, rail guns require high voltage, high current DC. Tesla coils provide high voltage, low current, high frequency Alternating current. They are not related. \$\endgroup\$ – DerStrom8 Sep 13 '16 at 19:24
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    \$\begingroup\$ How else? How to make either of those "ideas" practical. What do they imply in kinetic energy for the pumpkin, what THAT implies for electrical energy - voltages and currents - and what those imply for actually building something. If all you can do is name those "ideas" you haven't STARTED the research. Specs of waht you have won't help - a comparison between those specs and what you need will. \$\endgroup\$ – Brian Drummond Sep 13 '16 at 19:24
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    \$\begingroup\$ This is simply a list request. There's no question to be answered. \$\endgroup\$ – pipe Sep 13 '16 at 19:27
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    \$\begingroup\$ Pull back a spring with a screw thread or other rotary to linear converter. Takes a lot of energy. Car springs or torsion bars may work. Lethal. Wind up a Trebuchet with a winch. That has lots of cool factor. Pump water into a tank in a Trebuchet to make load. Cool!!!!!!. | Compress air. Oh yes!. | 1 kg to 100metres straight up no air needs mgh ~= 1 x 10 x 100 = 1000 J = 1000 Watt seconds. | V = sqrt(2.a.h) = sqrt (2 x 10 x 100) = 45 m/s = 100 mph. Stand clear. Air adds to this. About 120N / 12 kg drag forces at exit for moderate pumpkin. So "rather more" than 100 mph for 100m high. \$\endgroup\$ – Russell McMahon Sep 14 '16 at 1:58
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Use an electric motor to power a compressor to make an air cannon.

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