I think the confusion is that previously we have
discussed calculating speed from RPM. Obviously,
there the gear ratio matters (3000 RPM in first is not
the same speed as 3000 RPM in 4th).
--- Keith Turk <kturk@ala.net> wrote:
> This formula assumes a 1 to 1 output shaft... if you
> have an overdrive you
> have to adjust your gear ratio accordingly.... Keith
>
> ----------
> > From: Paul A Asgeirsson <pasgeirsson@juno.com>
> > To: spritenut@Exit109.com
> > Cc: Lancer7676@aol.com; kturk@ala.net;
> mikkel@isa.dknet.dk;
> spridgets@autox.team.net
> > Subject: Re: rpm -> speed calculation
> > Date: Saturday, July 10, 1999 7:37 PM
> >
> > On all mechanical speedos that have the drive from
> the transmission, it's
> > taken off the output shaft, which is the same as
> the driveshaft speed.
> > Makes no diference what gear it's in.
> >
> > Paul
> > PAsgeirsson@juno.com
> >
> > On Sat, 10 Jul 1999 21:44:03 -0400 Frank Clarici
> <spritenut@Exit109.com>
> > writes:
> > >Lancer7676@aol.com wrote:
> > >
> > >>
> > >> Wouldnt the transmission ratio fit in there
> somewhere? Seems like
> > >5th gear
> > >> with a 210 tranny would give you a different
> read than 4th gear with
> > >a rib
> > >> case.
> > >
> > >I'm not sure here but I would think the tranny
> makes no difference as
> > >long as you have the speedo drive from said
> tranny in said car.
> > >I mean, my 5 speed shows X mph in 4th and only
> the revs drop when I
> > >shift to 5th.
> > >Speedo stays the same.
> > >I am not saying a different tranny in the car
> does not make for a
> > >differnt reading, just that no matter what gear
> you are in, the speedo
> > >stays the same unless you step on the gas.
> > >
> > >
> > >--
> > >Frank Clarici
> > >Toms River, NJ
> > >Bugeye Sprite
> > >67 Sprite
> > >59 A40
> > >http://www.exit109.com/~spritenut/
> >
>
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