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/
>> >>
>>
>> ___________________________________________________________________
>> Get the Internet just the way you want it.
>> Free software, free e-mail, and free Internet access for a month!
>> Try Juno Web: http://dl.www.juno.com/dynoget/tagj.
|