[s-cars] New 5 cylinder vs. AAN

[Stoddard Robin]

Just a vid of the CEPA to drool over:
  http://www.youtube.com/watch?v=df-yU-g6ljE&feature=related
  
  YouTube - Audi TT-RS 5cylinder Holset 720hp


On 2010-10-15, at 5:51 AM, JC wrote:

> Nice post Cody.
> Never thought about the fact you can estimate rule of thumb RPM limits from
> stroke.  Cool.
> I sure likes me some science. (Tastes like chicken.)
> 
> ---- current ----
> 1995.5 S6 Avant
> 2003 E46 M3 Cic
> 2008 A3 2.0tDSG
> ---- past lives ----
> 2006 A4 2.0TQA
> 1998 A6Q 2.8 PES G2
> 1989 200TQA SJM
> 1990 CQ
> 1997 A4 1.8TQ Wett
> 1987 4kCSQ
> 
> John J. Cunningham
> jc at j2c3.com
> US Mobile +1 (617) 750-5025
> China Mobile: +86 (0) 136 8175 8180
> 
>> 
>> crankshaft resulting in wear. In the real world the maximum
>> average speed of a piston is about 25 meters per second. This
>> means a theoretical engine with a stroke of 100mm must not
>> exceed about 7500rpm. If the stroke were 75mm the engine
>> could do about 10,000rpm before piston speeds become too
>> great. Of course many other factors are involved (weight of
>> the piston, weight of the connecting rod, and the ability to
>> flow enough air to make it worthwhile), but that's the gist of it.
>> 
>> -Cody (mobile)
>> 
> 
> 
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