When I was in the Army mid-60's I had a Harley Scat, a bike most moto fans don't know existed. Got it because they're stone-axe simple with almost nothing to go wrong, and if something did go wrong, you could usually fix it with stuff from the local hardware and auto parts store. An important feature when you're stationed out in the middle of nowhere. Anything that couldn't be bought locally was usually in stock at the nearest Harley dealer (wherever that was) because nearly everything but the frame and engine was appropriated from other Harley models including the Sportster. At 8 horsepower it was too underpowered to be freeway legal, but it would do about 55 flat out and looked big enough to be legal so as a practical matter it could be ridden on the freeway without getting ticketed. The rear suspension had rubber damping which however didn't actually work, so on a rocky trail the rear wheel spent 95% off the time off the ground, a huge disadvantage when trying to go uphill on a rough jeep trail. Because of the cast iron cylinder, it had a tendency to seize up if ridden hard in hot weather, but I'd just suck in the clutch and stop and let it cool down for 20 minutes and then be on my way again, it never caused any damage. https://cdn1.mecum.com/auctions/lv0115/lv0115-200911/images/lv0115-200911_2@2x.jpg?1420826194000