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Re: Here we go again, was Re: this guy deserves a serious beatdown



Obviously an extreme example.
Lightening the flywheel of a Scirocco will not effect clutch or flywheel life unless you're a real
fumblebuss and you just have to rev the piss out of the engine to get the car going with the lighter
flywheel!


Sent: Wednesday, January 05, 2005 6:18 PM
Subject: Re: Here we go again, was Re: this guy deserves a serious beatdown


and i'm sure that clutch and flywheel don't have to
last 100k or 150k miles either.
--- Dan Bubb <jdbubb@ix.netcom.com> wrote:

> Lightening a flywheel is just the same as removing
> weight from your car except it's primary effect
> is reducing rotational inertia as opposed to just
> lightening the car. There is no change in engine
> HP or torque as a result of changing flywheel
> weight.
> Rotational inertia can be correlated to vehicle
> weight, so you can calculate the effective weight
> reduction. It's just that the effect is different in
> different gears. Relatively large effect in
> 1st, small effect in 5th.
> There's a performance gain. It isn't huge. It may
> not be worth the money. But it's there.
> And No! the laws of physics haven't changed.
>
> As a case in point, anybody seen a Formula 1 crank,
> flywheel and clutch. Just to give you an idea,
> the clutch plate diameter is 4.5" or less and the
> flywheel is really just an attachment plate for
> the clutch. Two reasons for the small diameter
> clutch; lower engine center of gravity and lower
> rotational inertia.
> The ultimate lightened flywheel.
>
> Dan
>
> Sent: Tuesday, January 04, 2005 10:06 PM
> Subject: Re: this guy deserves a serious beatdown
>
>
> On Tue, 4 Jan 2005 09:31:50 -0600, "David Utley"
> <fahrvegnugen@cox.net> wrote:
>
> >Next, Dan will tell me that I was right about
> heavier flywheels increasing
> >mileage...  :)
>
> I must have missed that one.  FWIW, Drake considered
> lightened
> flywheels a waste of money.   Not bad.. just no net
> performance gain.
> I got the physics lecture from Robert Collins when I
> asked about it
> and those laws haven't been changed in last 20
> years, have they? :-)
> Gordon
> 75 Scirocco/Drake 1.9 8V
> http://pws.prserv.net/scirocco/scirocco.htm
>



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