I always heard that he built the Capt. America bike.
Watched his show as a kid.
Wikipedia cut n paste
Replicas of the Captain America bike and Billy Bike at the Harley-Davidson Museum.[17]
The motorcycles for the film, based on hardtail frames and panhead engines, were designed and built by two African-American[18][19] chopper builders—Cliff Vaughs and Ben Hardy—following ideas of Peter Fonda, and handled by Tex Hall and Dan Haggerty during shooting.[20]
In total, four former police bikes were used in the film. The 1949, 1950 and 1952 Harley-Davidson Hydra-Glide bikes were purchased at an auction for $500, equivalent to about $3400 in 2016.[20] Each bike had a backup to make sure that shooting could continue in case one of the old machines failed or got wrecked accidentally. One "Captain America" was demolished in the final scene, while the other three were stolen and probably taken apart before their significance as movie props became known.[20] The demolished bike was rebuilt by Dan Haggerty and shown in a museum. He sold it at an auction in 2001. It now resides at the National Motorcycle Museum in Anamosa, Iowa. Many replicas have been built since the film’s release.[20]
Hopper and Fonda hosted a wrap party for the movie and then realized they had not yet shot the final campfire scene. Thus, it was shot after the bikes had already been stolen, which is why they are not visible in the background as in the other campfire scenes
dan
