You'll find very simlar looking bikes of that vintage made by Ducati, Benelli, Bianchi, MV, Parilla, etc. Lots of shared mechanicals but the tin-knocking is mostly one-off per manufacturer. Neat stuff, had a few.
I was going to say that it looks very similar to a BSA Bantam, then I read this - "...They were handsome, stylish little things powered by a DKW-derived, 123cc, two-stroke single..." Which is why it looks like a Bantam, Small Heath's finest lightweight was based on the same DKW engine design that found it's way to the UK at the end of the Second World War.
Actually, weight (mass) does matter. Air resistance is a force. The more weight (mass) an object has, the more force will be exerted on it by gravity. Leading to higher terminal velocities for heavier objects vs. lighter objects of the same size. Glad I could make The Beeb smarter today.
Size and coefficient of drag are unrelated. Not saying that the motorcycle will hit 185, but I think it's a stretch to say it won't because it's similar in size to a human. Especially when humans can hit speeds well over 200 mph if desired.
That’s for a skydiver who is in a body position which maximizes air resistance. I was clocked at 297 mph while in a no-Lift dive.
Barber Museum has at least 2 50cc Maserati bikes in it's collection. One is a trike/servi-car kinda thing.
It all depends on altitude. That RedBull guy hit something like 800mph. I was originally assuming we were talking about normal skydiving heights.
The red bull guy only held the record for like a year too. My father spent years skydiving and was airborne SF. Packed reserves and did prototype testing. Ive never had a chance to ask him, but is there a sense of real speed when in a dive like that??
When I did the almost 300mph head down dive, it blew the contact lenses out of my eyes, despite me wearing a full-face helmet with visor.