Recumbent Bicycle made from a Tree Trunk Pic
 

Peter Rathmann wrote:
On May 16, 7:53 pm, "Leo Lichtman" wrote:
"SMS" wrote in message

... I saw this today at the USGS Open House in Menlo Park:

"http://i41.tinypic.com/ouz91t.jpg"
Later I saw the owner riding it.
^^^^^^^^^^^^^^^^^^^^^^
Was it being ridden down hill? That looks like a pretty large chainring.

But a smaller than normal rear wheel. So to get the same gearing you
can use a larger chainring.

butbutbut, ISO 406-mm is a normal wheel size.

--
Tom Sherman - 42.435731,-83.985007
LOCAL CACTUS EATS CYCLIST - datakoll