Private roads up to some of the cabins in the Smokys is like 2 or 3 or 4 of these Lombard street runs, end-to-end.
I've driven San Francisco's famous Lombard street a couple of times ….never on two wheels.
When a scooter is at idle there is no engine braking....at least not on any of mine.
In a car I was never touching the gas pedal....just riding the brake.
Stig
one of our local lakes has driveways like that. I've done several site designs. I can see where belt drive would not stay engaged. I went to get payment from a client once, on my V-strom, iirc from my survey work, 195 feet drop in a 600ft driveway, going down was not memorable, probably cause the V-strom 1000 has phenomenal engine braking, what I do remember is never getting the clutch fully engaged in 1st the whole way to the top, slipping it all the way, and leaning forward right into the tank for fear of looping it, the inclination of the driveway, nearly 30%, is like riding a wheelie. That was the last time I rode down, I went down in my Grand Cherokee once too, brakes all the way down, and you hope they don't fade, torque converter never locking all the way up. after that, when I went to the site, it was like beginning of job before driveway was built, park at top, walk down, during the survey itself, I hate to think of how many times up and down