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At 05:47 PM 10/19/2003, BAdams6456@aol.com wrote:<br>
<blockquote type=cite class=cite cite><font face="Arial, Helvetica" size=2>In
a message dated 10/19/2003 5:07:30 PM Pacific Daylight Time,
rob@unixguy.com writes:<br>
<blockquote type=cite class=cite cite>I know that it may upset some of
the <br>
faithful, but this whole water jacket thing is a stinky design
IMO.</blockquote><br>
Makes you wonder why VW didn't stick with their proven air-cooled engine
concept and just make improvements to that design based on evolving
state-of-the-art in air-cooled engines. Many small aircraft are still
powered by air-cooled engines, why not post 1983 VW Vanagon
campers?<br><br>
Bill<br>
'76 ASI Riviera</font><font face="arial"> </font></blockquote><br><br>
Easy answer, actually.&nbsp; Emissions.&nbsp; Air cooled engines can't
maintain the tighter tolerances of a water cooled engine and require more
room between parts for temperature expansion and contraction.&nbsp; That
makes for a lot less potential to control the fuel burn and reduce
emissions while maintaining (or increasing, in the best designs) power
output for a given displacement.<br><br>
The motorcycle world (where I'm most familiar these days) has been
undergoing this transformation for years.&nbsp; There are fewer and fewer
air cooled engines around.&nbsp; When they can (reasonably) sell as many
bikes as they want to make, why did Harley bother to build the V-Rod
(engined designed in part by Porshe, by the way)?&nbsp; It's a
fore-runner of the day when they'll have to disappoint the faithful and
cease offering an air-cooled big twin.&nbsp; BMW has moved toward a more
highly evolved air/oil cooled engine since 1993 for its big twins, but
it's only a matter of time before that engine is completely superceded as
well.<br><br>
Cheers.<br>
Rob<br>
<x-sigsep><p></x-sigsep>
<font face="arial">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
It's never too late to have a happy childhood.<br>
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Rob Scott,
<a href="mailto:rob@unixguy.com" eudora="autourl">mailto:rob@unixguy.com<br>
</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Langley, Washington on Whidbey
Island (a suburb with a moat)<br>
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