Well, If you take wheelspin into account, it will be more benificial to put
the lightweight wheels on the DRIVE wheels to get MORE wheelspin. WOOHOO
Burnouts are cool!
OTTO
>From: dg50@daimlerchrysler.com
>Reply-To: dg50@daimlerchrysler.com
>To: autox@autox.team.net
>Subject: Re: Lightweight wheels...drive only?
>Date: Thu, 27 Jul 2000 16:13:02 -0400
>
>Per (GRMPer@aol.com) wrote:
>
> > Anybody out there know if you just replace the DRIVE wheels with lighter
> > pieces, how much advantage this is?
>
> > Are the drive wheels 50% of the rotational inertia from the wheels...or
>is it
> > more?
>
>Imagine you have a tank - you know, big-ass metal thing with a big gun -
>and you turn it upside-down so the track is in the air. Drive wheels are in
>the back, all the bogies are just along for the ride.
>
>Run the engine, watch all the wheels turn, driven by the track - so each
>wheel is causing an inertia penalty.
>
>Now separate the track (one long strip, instead of a continuous loop) and
>lay it across the wheels. Run the engine. Watch all the wheels turn until
>you run out of track and it falls off.
>
>Now consider that the "ground" is really a drive belt of infinate length,
>and as long as the non-drive wheels of your car are in contact with the
>ground, the drive wheels are driving the non-drive wheels, just like the
>upside-down tank.
>
>So, assuming similar wheel size front and rear, and assuming 2 drive
>wheels, the drive wheels make up 50% of the rotating inertia from the
>wheels. QED.
>
>Funny tank story: A tank is really a locomotive, where the "rails" are
>continuously picked up after they've been driven over and placed up front
>again. Of all the wheels on a tank, only the drive sprocket (one per side)
>is actually connected to anything - like brakes. I once saw a crew, who had
>to replace some track sections and thought they could cut corners, break
>both sides of the track (explicitly forbidden!) and as soon as the track
>was free of both drive sprockets, 45 tonnes of tank rolled down the
>now-flat track sections like a big ol' roller coaster, down a hill, and
>into a swamp. Doh!
>
>DG
>
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