This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This 1969 Rupp Goat was produced by an Ohio-based manufacturer of mini bikes, small dune buggies, snowmobiles, and go-karts that operated from 1959 until 1978. The Goat was a midrange model produced for just a single year in the midst of Rupp’s ever-changing lineup, and is powered by a 5 hp Tecumseh four-stroke single. This one is claimed to remain in largely original condition (a real rarity) with 90 miles displayed on the odometer, and we think it’d make the perfect accessory to put in the back of an old International Scout. Find it here on eBay in Miami, Florida for $2,500 OBO.
The Goat slotted between Rupp’s range-topping Roadster and Scrambler, and all three came exclusively in red, orange, yellow, or the bright green metallic seen on this example. An expected number of small paint nicks and scuffs are present around the frame along with some surface rust on the brightwork and various hardware, but overall the little bike does look highly original and pretty well cared for all in all.
Features include coil spring shocks front and rear, a single drum brake out back, a double crown fork, full coverage fenders, a kickstand, and a cool ducktail seat–head and taillights were not offered for this model. We dig the solid wheels and knobbly tires too.
The cockpit is straightforward–a single hand lever actuates the rear drum brake, a twist-grip operates the throttle, and a speedometer/odometer is mounted atop the fork crown. Seat vinyl shows some aging along with a couple popped seams and the neat polished triangular fuel tank could be cleaned up a bit, but things look good enough that we’d be happy riding it around the pits just as it is.
The Tecumseh H50 four-stroke single mounted between the frame rails was good for about 5 horsepower when new, starts via pull-cord on the right-hand side, and turns the chain-driven rear wheel through a 2-speed jackshaft.