If you want to see a particular theme of pictures posted start a thread for it. Your pictures just MIGHT end up on the Boxerworks front page in the Gallery slideshow. That said, the RULES are as follows.....
1. try to keep it Motorcycle related please.
2. NO PORN, it can be sexy but no nekkid stuff
3. NO items for sale
robtg wrote:
Streamlining, similar to the fairings on the fork legs in the first photo.
I would have assumed the space to be hollow and flow gasses ... but who knows ?
Interesting scenario in either case (flow or aerodynamics),
but unless the pipe is at hand to scrutinize ...
robtg wrote:
Streamlining, similar to the fairings on the fork legs in the first photo.
I would have assumed the space to be hollow and flow gasses ... but who knows ?
Interesting scenario in either case (flow or aerodynamics),
but unless the pipe is at hand to scrutinize ...
Another thought--- Blowdown during overlap on a supergharged motor eliminates the need for exhaust scavenging
of the cylinders. Most blown motors just dump the exhaust overboard with short pipes, Auto Union comes to mind. Even with the pipe at hand to scrutinize , it may not be obvious---German engineering being a little
odd in that era.
Who is the old(er) man in the first pic? Could it be Ernst Henne himself? If so, the bike is a good 30+ years old by then and all sortsa stuff could have changed from the period record pics. Perhaps the bike had undergone a "restoration" with parts that were readily at hand (megaphones). Perhaps the bike was part of other ongoing R&D and the megas were a later change.
Call me Mel. Some years ago- never mind how long precisely- having little or no money in my purse, and nothing particular to interest me at home, I thought I would ride about a little and see the other parts of the world.
melville wrote:Who is the old(er) man in the first pic? Could it be Ernst Henne himself? If so, the bike is a good 30+ years old by then and all sortsa stuff could have changed from the period record pics. Perhaps the bike had undergone a "restoration" with parts that were readily at hand (megaphones). Perhaps the bike was part of other ongoing R&D and the megas were a later change.
You're right, it is ol' Ernst himself. The bike with the modifications shown: and Ernst himself: Also, I'd be willing to bet the added metal on the header was for streamlining. I read a book called "Shape and Flow" many years ago. A circular cross section has way more drag than the teardrop shape, something on the order of 16:1, so a 1/16" wire will have the same drag as a 1" thick symmetrical airfoil.
and Ernst himself: 
Also, I'd be willing to bet the added metal on the header was for streamlining. I read a book called "Shape and Flow" many years ago. A circular cross section has way more drag than the teardrop shape, something on the order of 16:1, so a 1/16" wire will have the same drag as a 1" thick symmetrical airfoil.
