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- Newsgroups: rec.motorcycles
- Path: sparky!uunet!cs.utexas.edu!zaphod.mps.ohio-state.edu!rpi!newsserver.pixel.kodak.com!laidbak!jeq
- From: jeq@i88.isc.com (Jonathan E. Quist)
- Subject: Re: All-wheel drive???
- Message-ID: <1993Jan25.201113.289@i88.isc.com>
- Sender: usenet@i88.isc.com (Usenet News)
- Nntp-Posting-Host: birdie.i88.isc.com
- Organization: Lachman Technology, Incorporated, Naperville, IL
- References: <1jnmm3$qkg@agate.berkeley.edu> <ramage.727704451@tesla> <C1F8H4.M6w@javelin.sim.es.com>
- Date: Mon, 25 Jan 1993 20:11:13 GMT
- Lines: 37
-
- In article <C1F8H4.M6w@javelin.sim.es.com> blgardne@javelin.sim.es.com writes:
- >ramage@ece.scarolina.edu (Dan Ramage) writes:
- >>robinson@cogsci.berkeley.edu (Michael Robinson) writes:
- >
- >>>He claims he saw an old Spagthorpe prototype that had a driven front wheel.
- >>>It was a water-cooled bike, but instead of a radiator, it had sort of a
- >>>boiler affair. They ran steam lines down the front forks to a steam
- >>>turbine in the front hub (the hub apparently looked sort of like a
- >>>front drum brake type deal). The clever part was the centrifugal vane
- >>>advance on the turbine which would adjust the vanes for maximum torque
- >>>when stopped, and maximum power at speed.
- >
- >>>I was sort of skeptical, but he explained the reasoning behind it: an
- >>>internal combustion engine is only about 70% efficient, with the rest
- > ^^^^^^^^^^^^^
- >>No where even close. An internal combustion engine is around 30%
- >>efficient and that is probably a little high.
- >
- >Is this the net's first serious followup to a Spagthorpe article?
- >Congratulations on your catch Michael, are you going to mount him in the
- >den, or just hang him on the wall in your garage?
-
- All that aside, it's an incorrect followup. Everyone knows that
- the JAS engines (not to be confused with JAP engines) had legendarily
- high efficiencies, due largely to the cylinder design. Instead of
- relying on conventional piston rings (with their attendant frictional
- losses) to seal the cylinders, the JAS engines used prelubricated
- piston sheaths, made of sheep intestines, to assure a leak-free, low
- friction tight fit. (Later revisions of the marque began using
- latex sheaths instead, but along with puncture problems that appear
- with some synthetic lubricants, the old-timers will tell you
- that the natural sheaths just "feel better".
- --
- Jonathan E. Quist Lachman Technology, Incorporated
- jeq@i88.isc.com '71 CL450-K4 "Gleep", DoD #094 Naperville, IL
- __ There's nothing quite like the pitter-patter of little feet,
- \/ followed by the words "Daddy! Yay!"
-