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Tinker time
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Tinker time
This birthday challenge will see our teams start on land and race their machines, against the clock, across the Scrapheap lake to a finish line on the far shore. Each team has two runs and the fastest combined time will win the contest. Tinker time sees the Bright Sparks trim the corners off their 11th-hour engine cowling and add rudders to direct their single fan. The Grunts follow suit with a hastily bodged rudder system and they add extra fan blades for enhanced engine power.

The Bright SparksThe GruntsThe Bright Sparks' designThe Grunts' design
The Grunts scavengeThe Bright Sparks scavengeTextbookComic book
Tinker timeEngine troubleThree men in a boatProper job!
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M4 Sunday 29 Nov 10.30AM
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