Mona Lisa Overdriveway

It never hurts to get your kids interested in technology. Because you never know what they're gonna have to do one day in the future.

Olivia lay on the driveway in front of her Thames & Kosmos Stirling Engine, furious at herself. It was a crisp afternoon, but not cold yet. The manual was open and she was connecting the battery, which she'd convinced her father to buy, as it was sold separately. If only she'd thought to bring the rubbing alcohol. Maybe it just wasn't meant to be...

Olivia knelt down next to her companion, the Thames & Kosmos Stirling Engine. "Looks like they got you bad, Sterling." she said, glancing down his metal frame.

Thames & Kosmos Stirling Engine laughed. "I been hit worse. Don't you waste your time here, girl. Get back to the past and make your delivery."

Olivia looked behind her. The Interdictors were gathering with their sharp metal claws. She'd always heard the stories, but never seen them. Ever since the Tech Tyrant had seized control of the planet's energy sources, his Interdictors had been desperate to stop every Thames & Kosmos Stirling Engine on the planet… and, as far as she knew, the last one was her partner.

"You gotta go, girl," said the Thames & Kosmos Stirling Engine. "My built-in meter says I don't have much electricity left. Just enough to hold 'em off while you escape into the past."

"I can't leave you! I can't face a day without your parabolic mirror reflecting what's left of the sun's light!" Olivia pressed her hand against the Thames & Kosmos Stirling Engine.

"You gotta, kid. Get going. Take this-" The Thames & Kosmos Stirling Engine handed Olivia a bottle of rubbing alcohol "-and get back there. Through the time portal. Help your descendant build a Thames & Kosmos Stirling Engine of her own… power that little electric car… shift the balance… shift the balance…"

The Interdictors were closing in. Olivia held the bottle of rubbing alcohol close, gritted her teeth, said a fast prayer, and ran for the portal… just as the sonic beams began to fire. Not fast enough! said the voice inside her head. Olivia felt her heart drop to her knees. The Tech Tyrant had taken over her implant! Already her arms and legs were beginning to freeze. In just seconds, she would be another cyber-zombie, and humanity would be nothing more than… than… than…

With the last bit of her strength, Olivia threw the bottle at the time portal. The last thing she saw was a flash as the bottle disappeared into the past. Olivia figured maybe, just maybe, whatever past it found might still have a chance…

Olivia heard the gentle thump behind her. She never would figure out where the bottle came from. But it was just enough to fire up her Thames & Kosmos Stirling Engine, and just enough to start her dreaming about what sort of engines she could build when she was older.

And, somewhere, a world began to change.

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Recommended Ages: 12 Years and Up

Discover the Stirling engine, a simple, clean and efficient energy technology that is quickly becoming a viable source of electricity as the availability of fossil fuels declines. Like a steam engine, a Stirling engine is a heat engine that converts heat energy into mechanical work, usually to drive a generator that then converts the mechanical energy into electricity. Stirling engines are highly efficient, can operate very quietly, and can use many different sources of heat: combustion of fuels, nuclear fission, geothermal, or solar heat, as this model uses.

  • Exciting experiment kit teaches young scientists the fundamentals of physics, chemistry, solar power and how engines work
  • An innovative front-mounted Stirling engine with integrated generator produces electrical power
  • The Stirling engine can be heated with solar energy by using the parabolic mirror, or it can be heated with an alcohol burner
  • The home-made electricity is stored in a battery and used to drive the included electric car (battery not included)
  • The built-in meter can be used to take a reading of the electricity you have produced
  • The kit includes the charging station with a beta type Stirling engine, the electric car, and an educational, full-color 32-page manual

To learn more, view some sample pages of the manual

Shipping Note: Eligible for shipping to all 50 states

Warranty: 90 Day Woot Limited Warranty


Age Range: 12+
Additional Items Needed:

(1) AAA Ni-MH 500-mA Rechargeable Battery

(1) Bottle of Rubbing Alcohol

Warning: Only for use by experimenters over 12 years of age. Use only under strict supervision of adults who have familiarized themselves with the safety measures described in the experiment manual. Keep children and pets away from the experiment area. Parts of the Stirling engine can get very hot while in operation - do not burn yourself. Before pointing the generator toward the sun, or when refilling the alcohol burner, be absolutely sure to let the hot parts cool off. When adjusting the parabolic mirror, use the adjustment rod and never look directly into the sun (follow the instructions in the manual.)

In the box:

Thames & Kosmos Stirling Engine Car and Experiment Kit includes:

  • (1) Parabolic Reflector
  • (1) Stirling Engine Module
  • (1) Electric Car
  • (1) Mirror Mount
  • (1) Base
  • (1) Cable
  • (1) Burner
  • (1) Meter
  • (1) Sighting Rod
  • (1) Pipette
  • (5) Screws
  • (1) Adaptor
  • (1) Manual

Sales Stats

Speed to First Woot:
2m 42.776s
First Sucker:
Last Wooter to Woot:

Purchaser Experience

  • 7% first woot
  • 3% second woot
  • 23% < 10 woots
  • 27% < 25 woots
  • 40% ≥ 25 woots

Purchaser Seniority

  • 6% joined today
  • 1% one week old
  • 1% one month old
  • 16% one year old
  • 77% > one year old

Quantity Breakdown

  • 87% bought 1
  • 8% bought 2
  • 5% bought 3

Percentage of Sales Per Hour

12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11

Woots by State

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Thames & Kosmos Stirling Engine
$39.99 Sold Out Toys & Games
$39.99 USD false 1 Retail EA
1 3
Woot! Kids.Woot
4121 International Pkwy Carollton TX 75007 U.S.A.