[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

balancing.



Simply put there is no reason why reducing rotational inertia will decrease
MPG just like reducing the weight of a car will not Decrease MPG or reducing
aerodynamic drag will not Decrease MPG. They all reduce the energy required
to move a car, they will all reduce the fuel used. Some more, some less.
Before you take too much solace in Patrick chiming in, I think you should
verify that he did not also change to a 2.0L engine at the same time.
I could be wrong, but a quick review of some of his posts indicates the
installation of the lightened flywheel coincided with the swap to a 2.0L.
It's far more likely that the increase in engine size accounts for his drop
in economy.
I'm sorry about the Vortex comment, but the statement about decreased MPG
makes no engineering sense.
Dan

----- Original Message -----
From: <mr.utility@highstream.net>
To: Mark <mardak@cogeco.ca>
Cc: 'Dan Smith' <sad_rocc@yahoo.com>; <scirocco-l@scirocco.org>; 'Patrick
Bureau' <txrocco@sbcglobal.net>
Sent: Friday, October 31, 2003 5:33 PM
Subject: RE: balancing.


> Okay, obvoiusly I have not made myself very clear here, so let me
rephrase...
>
> You WILL lose mpg, although that may not be important to you...  Patrick
as
> chimed in, and agreed with my experience, mpg lost, about 2 mpg...  That
may
> not be important to you...  If so, then this discussion has little to do
with
> what you want...  More power...
>
> Forgive me if I am a bit heated, I just wrote a very well thought out
response
> to Dan, the engineer, and my computer ate it, twice...  So, once I get
home, I
> will be responding where I know that it will not be lost...
>
> David
>
>
> Quoting Mark <mardak@cogeco.ca>:
>
> > > -----Original Message-----
> > > From: scirocco-l-bounces@scirocco.org [mailto:scirocco-l-
> > > bounces@scirocco.org] On Behalf Of Patrick Bureau
> >
> >
> > > 1. alot easier to rach 7K on the rpm in 1st gear and it gets there
> > FAST!
> > > 2. alittle lost of MPG indeed, I used to get 32-34MPG before I get 30-
> > > 32MPG
> >
> > You more than likely have slightly less fuel mileage because you're
> > USING the extra acceleration that a lightened flywheel provides.
> > There's no free ride here - usually if you gain some horsepower from a
> > modification, you're going to USE that extra power - which in turn burns
> > more fuel...   I don't buy the argument that fuel mileage decreases with
> > a lightened flywheel simply because there's less rotational inertia.  If
> > anything, it takes more power to get a heavier flywheel spinning in the
> > first place, so I believe that fuel mileage would be worse (albeit an
> > almost immeasurable amount) with a heavy flywheel.
> >
> > Mark.
> > 80 S
> > 81 S  ABA/JH/4K
> >
> >
> > _______________________________________________
> > Scirocco-l mailing list
> > Scirocco-l@scirocco.org
> > http://neubayern.net/mailman/listinfo/scirocco-l
> >
>
>
>
>
> _______________________________________________
> Scirocco-l mailing list
> Scirocco-l@scirocco.org
> http://neubayern.net/mailman/listinfo/scirocco-l