balancing.

[mr.utility at highstream.net (mr.utility@highstream.net)]

Re-read it, people...  I said, PART of the reason, not THE reason...  Jesus 
Christ...  This IS the only medium we have to communicate through, you have to 
read it....

David

Quoting Drew MacPherson <drew@scirocco.cs.uoguelph.ca>:

> 
> Dan's on the money- diesels get better mileage because there's more 
> energy in diesel fuel AND the diesel engine is more efficient.  On top of 
> that, VW diesel flywheels are pretty much the same as their gas 
> counterparts, except that they have a O degree TDC timing mark.
> 
> Big diesels have big flywheels because they're big-ass engines with long 
> strokes and low idles, and as Dan said the inertia in the rotating 
> flywheel keeps the engine idling.  Large, low revving gasoline motors 
> (such as one might find in an antique tractor, for example) also had large 
> flywheels for the same reason.
> 
> Drew
> 
> 
> On Fri, 31 Oct 2003, Dan Bubb wrote:
> 
> > >   Do you know how heavy a Diesel flywheel is in comparison to a gas 
> > >flywheel?  Part of the reason is that they have a higher mpg is because of
> the 
> > >higher inertia they have once up to speed... 
> > 
> > I disagree. Diesels get better mileage due to the higher energy content
> > of diesel fuel and the more efficient diesel cycle. The heavier flywheel
> > is required because of the significantly higher CR of a diesel engine.
> > More energy/inertia is required to get the engine through the
> > compression stroke and maintain decent idle quality doing so.
> > 
> > >  The reasons you cited for having weight on the flywheel are good
> > > reasons as
> > >well, but they are not the only ones...
> > 
> > Sorry, your original statement that a heavy flywheel would increase
> > highway fuel mileage implied that was the Primary reason for a heavy
> > flywheel which is incorrect.
> > 
> > >David
> > 
> > >PS  And while I read the Vortex quite a bit, I weigh that against hands-on
> 
> > >experience, as well as reading good technical sources (read that 
> > >as 'accredited'), as well as long conversations with a good friend of 13
> years 
> > >who has been a mechanic for almost 40 years...  The one thing I will
> promise 
> > >each and every one of you is if you can prove me wrong, I will admit it, 
> > >period...  I don't know it all, nor do I pretend to (hopefully) :-)  I can
> 
> > >only ask that if you do not agree/understand, please ask questions...  I
> have 
> > >not insulted anyone here, nor will I throw jabs at someone, even if I 
> > >disagree, but especially if I do not understand...  I am here to learn,
> and to 
> > >share.  I thought that was that this list was for...  Did I misundestand?
> 
> > 
> > Ya know, I'm an engineer and I've spent way too much time thinking about
> and working on cars. Maybe, I'm overly concerned about trying to help make
> the Scirocco list technically correct and, hopefully, a huge step up on some
> of the laughable statements made on Vortex.
> > 
> > But, whatever. 
> > 
> > _______________________________________________
> > Scirocco-l mailing list
> > Scirocco-l@scirocco.org
> > http://neubayern.net/mailman/listinfo/scirocco-l
> > 
> 
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