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#1
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Recumbent Bicycle made from a Tree Trunk Pic
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. |
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#2
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Recumbent Bicycle made from a Tree Trunk Pic
"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. Note the clever dual-purpose helmet, stand combination. Is it possible the stump has been hollowed out to lighten the bike and provide storage space? |
#3
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Recumbent Bicycle made from a Tree Trunk Pic
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? Nope, around the parking lot of USGS. |
#4
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Recumbent Bicycle made from a Tree Trunk Pic
SMS aka Steven M. Scharf wrote:
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. Coaster brake equipped? -- Tom Sherman - 42.435731,-83.985007 LOCAL CACTUS EATS CYCLIST - datakoll |
#5
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Recumbent Bicycle made from a Tree Trunk Pic
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. |
#6
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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 |
#7
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Recumbent Bicycle made from a Tree Trunk Pic
I think that looks like a Flywheel that belongs between an engine and
a transmission used as a chainring. That would make for a very fast descent, either on the road or off the nearest cliff. Maybe motorcycle equipment should be used with this wicked looking contraption. Claude |
#8
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Recumbent Bicycle made from a Tree Trunk Pic
On May 17, 10:37*am, SMS wrote:
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. If collision occurs and the chain goes off, the sharp slicer disc at the front can slice the person bottom wide open. Dangerous. M |
#9
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Recumbent Bicycle made from a Tree Trunk Pic
Mark Franzels wrote:
On May 17, 10:37 am, SMS wrote: 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. If collision occurs and the chain goes off, the sharp slicer disc at the front can slice the person bottom wide open. Dangerous. M Except people do not come off SWB recumbents during a crash [1] in a way that puts them near the chain ring, unless the circumstances were VERY unusual. By this logic, upright bicycles are too dangerous, since the rider can go over the bars and land on his/her head. [1] BTDT. -- Tom Sherman - 42.435731,-83.985007 LOCAL CACTUS EATS CYCLIST - datakoll |
#10
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Recumbent Bicycle made from a Tree Trunk Pic
Tom_Sherman wrote:
Mark Franzels wrote: On May 17, 10:37 am, SMS wrote: 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. If collision occurs and the chain goes off, the sharp slicer disc at the front can slice the person bottom wide open. Dangerous. M Except people do not come off SWB recumbents during a crash [1] in a way that puts them near the chain ring, unless the circumstances were VERY unusual. By this logic, upright bicycles are too dangerous, since the rider can go over the bars and land on his/her head. I do not think a bicycle chainring can slice a person bottom wide open. It is not rotating at all, and it is not sharp. |
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