Spot on Errol, all to do with the inertia characteristics of a rotating disc
, ie flywheel. It also helps in smoothing out the power pulses of the engine
if I'm not mistaken. I assume that an engine with a lighter flywheel would
seem a bit "jerkier" at idle and low engine speeds?
Daniel Kroehn
Recommending Datrats, supplying quality Datsun performance parts
www.Datrats.com.au
----- Original Message -----
From: Errol Smith <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, June 06, 2001 10:06 PM
Subject: Flywheels...Long and a bit boring (technical)?
> Anthony,
> A flywheel is just a device for storing and releasing energy from the
> engine.
>
> With a heavy flywheel, as an engine is accelerated, the amount of energy
> stored in the flywheel increases in direct proportion to the rotational
> speed. This takes energy from the engine that would normally be directed
> further down the drive train to the driving wheels.
> On a hill, when the engine is unable to produce enough torque to maintain
> the velocity in a given gear, energy is released from the flywheel to
> supplement the engine torque output. This means an engine with a heavy
> flywheel loses less speed on the hill than the vehicle with a light
> flywheel, provided the same gear is used.
>
> On a flat road when two vehicles identical in all respect apart from
> flywheel mass are accelerated, the vehicle with less flywheel mass will
> always accelerate (and slow down during braking) faster than a car with a
> heavy flywheel.
>
> For a cruiser use a heavy flywheel. For a racer/sporty use the lightest
> practical rotational inertia combination, as this will give you the best
> performance.
>
> Any comments from the engineering fraternity?
>
> Cheers
> Feral Errol
> mailto:[EMAIL PROTECTED]
> http://www.datrats.com.au/
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Anthony Tuting
> Sent: Wednesday, June 06, 2001 1:41 PM
> To: [EMAIL PROTECTED]
> Subject: RE: Flywheels!?!? (Errol)
>
>
> I'm not sure that this information is correct but since your application
is
> for 'rally' then the alloy flywheel might not give good
acceleration/torque?
> when going uphill.
> Can anyone confirm this? All I am going of is the part descrition in Gran
> Turismo hehe anyway there might be some truth in it.
>
> Anthony
>
>
> From: "nat P." <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
> Subject: RE: Flywheels!?!? (Errol)
> Date: Tue, 5 Jun 2001 19:33:57 -0700 (PDT)
>
> I am going to buy one from Errol, He's an engine
> biulder whos giving me a hand and one of rhte
> questions that hes asked was how much was my flywheel.
> BUT I am still not sure if I should go the alloy
> flywhel option yet, being a rally car and all.?!?
> Hence thats why I have not ordered it yet!?!?
> Cheers NAt
>
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