Yeah you happened to run into the only math I know.... Well sorta.... This
stuff is what makes Bonneville so much fun... gear ratio's tire sizes and
Transmission gear stuff.....
Oh and don't forget to bring the Horsepower.... I still wonder how the
Hell I got here sometimes... I mean how does a Guy who Loves Healeys... end
up on the salt racing a Camaro...
The Meet is on the 14-20th of Aug.... Wait that is next month.... Hmmm
better go work on the Hot Rod eh? talk at you all later.... Keith
----------
> From: Paul A Asgeirsson <pasgeirsson@juno.com>
> To: kturk@ala.net
> Cc: spridgets@autox.team.net; pasgeirsson@juno.com
> Subject: Re: rpm -> speed calculation
> Date: Sunday, July 11, 1999 7:13 AM
>
> Your right Keith, I misread the original question. I thought it was
> simply revolutions per mile, as in speedo drive revolutions, instead of
> engine revolutions per mile. My apologies. Next time I'll read closely
> before opening my mouth in order to stick my foot in it!
>
> Hope you make the record run, wish you the best.
>
> Thanks, Paul
>
> PAsgeirsson@juno.com
>
> On Sun, 11 Jul 1999 07:59:10 -0700 "Keith Turk" <kturk@ala.net> writes:
> >Paul reread the equation.... RPM X Tire Size divided by gear ratio X
> >336 =
> >mph
> >
> >This assumes a 1 to 1 trans.. otherwise you modify the RPM of the
> >Engine to
> >create Torque as with 1st gear or Fuel mileage with overdrive...
> >
> >your right in assuming the driveshaft goes around unaffected by the
> >trans... but we are using RPM... as part of the equation....
> >
> >Let me make this simple and show you a little about how I use this
> >equation..
> >
> >8000 RPM X 28" tire = 224000
> >-------------------------------------------- = 222.22 mph
> >3.00 gear X 336 = 1008
> >
> >Since the Record is 219 in D gas Altered at Bonneville if I am lucky
> >enough
> >to run that RPM with zero tire slip... Oh nevermind....you get the
> >point...
> >
> >Keith Turk
> >Austin Healey 100 / Bugeye / Box Sprite / Bonneville Land Speed
> >Racer
> >Camaro ( D Gas Altered )
> >----------
> >> From: Paul A Asgeirsson <pasgeirsson@juno.com>
> >> To: kturk@ala.net
> >> Cc: pasgeirsson@juno.com; spritenut@Exit109.com; Lancer7676@aol.com;
> >mikkel@isa.dknet.dk; spridgets@autox.team.net
> >> Subject: Re: rpm -> speed calculation
> >> Date: Saturday, July 10, 1999 10:32 PM
> >>
> >> Overdrive or not, that has no affect on the output shaft/driveshaft
> >speed
> >> where the speedodrive is located. Still it's a simple rev counter
> >behind
> >> all the gears, so no consideration need be given the gear you are
> >in, 1st
> >> or overdrive.
> >>
> >> Paul
> >> PAsgeirsson@juno.com
> >>
> >> On Sat, 10 Jul 1999 23:08:35 -0700 "Keith Turk" <kturk@ala.net>
> >writes:
> >> >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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