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60mph/3000 rpm what is my axle ratio?

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  • 60mph/3000 rpm what is my axle ratio?



    hi!
    Curious about if my 63 R2 Avanti has the best axle ratio for highway travel.
    Without taking off the rear plate and counting teeth, can someone
    tell me what 4th gear 60 MPH at 6000 rpm is?

    thanks!

    Terry,
    1963 Avanti R2, 63SR1065 http://sterkel.org/avanti
    1985 Kubota L2202 (Diesel)
    2000 VW Jetta GLS
    2003 VW Jetta TDI (Diesel) http://sterkel.org/tdi

  • #2
    I'll bite - is it 3000 RPM or 6000. If it's 6000, you've got a problem[}]
    What size tires???

    Miscreant at large.

    1957 Transtar 1/2ton
    1960 Larkvertible V8
    1958 Provincial wagon
    1953 Commander coupe
    1957 President 2-dr
    1955 President State
    1951 Champion Biz cpe
    1963 Daytona project FS
    No deceptive flags to prove I'm patriotic - no biblical BS to impress - just ME and Studebakers - as it should be.

    Comment


    • #3
      Wow, 3000 at 60 MPH is going to be a 4.11, better double check.

      Studebaker On The Net http://stude.com
      64 GT Hawk
      64 R2 4 speed Challenger
      63 R2 4 speed GT Hawk
      53 Street rod
      JDP Maryland

      Comment


      • #4
        quote:Originally posted by tsterkel



        hi!
        Curious about if my 63 R2 Avanti has the best axle ratio for highway travel.
        Without taking off the rear plate and counting teeth, can someone
        tell me what 4th gear 60 MPH at 6000 rpm is?

        thanks!

        Terry,
        1963 Avanti R2, 63SR1065 http://sterkel.org/avanti
        1985 Kubota L2202 (Diesel)
        2000 VW Jetta GLS
        2003 VW Jetta TDI (Diesel) http://sterkel.org/tdi
        The Dana 44 in your Avanti should have a metal tag under one of the rear cover hold down bolts that gives either the axle ratio or the number of teeth on the ring and the number on the pinion gear (divide the ring gear # of teeth by the pinion number of teeth to get the ratio), or both. If the tag has been removed, you can determine the axle ratio if you know (or can compute or measure) the rear tire diameter. Use a calculator such as this one...

        http://mywebpages.comcast.net/rforceno/arc/arc.htm

        If you are truly running 3000 RPM at 60 MPH you certainly don't have the best rear end ratio for highway travel. You have one of the worst. You do have, however, one of the best rear end ratios for acceleration from a stop.

        -Dick-
        Dick Steinkamp
        Bellingham, WA

        Comment


        • #5
          Oddly, N8 and I played with a R1 Powershift Avanti with a 4:11 rear. It was lots of fun to drive around town, but a PITA on the highway.

          Studebaker On The Net http://stude.com
          64 GT Hawk
          64 R2 4 speed Challenger
          63 R2 4 speed GT Hawk
          53 Street rod
          JDP Maryland

          Comment


          • #6
            Hi,
            You need this great calculator page:
            http://www.ring-pinion.com/content/calculators/RPM.asp

            1955 1/2 Ton Pickup

            Paul Simpson
            "DilloCrafter"

            1955 1/2 Ton Pickup
            The Red-Headed Amazon
            Deep in the heart of Texas

            Comment


            • #7
              That is a neat page..Thanks!
              Beats turning the driveshaft and watching the tire(s)[|)]
              Jeff[8D]



              quote:Originally posted by DilloCrafter

              Hi,
              You need this great calculator page:
              http://www.ring-pinion.com/content/calculators/RPM.asp

              1955 1/2 Ton Pickup
              DEEPNHOCK at Cox.net
              '37 Coupe Express
              '37 Coupe Express Trailer
              '61 Hawk

              http://community.webshots.com/user/deepnhock
              HTIH (Hope The Info Helps)

              Jeff


              Get your facts first, and then you can distort them as much as you please. Mark Twain



              Note: SDC# 070190 (and earlier...)

              Comment


              • #8
                Highway travel at 6 grand?!
                You Avanti guys sure are, uh... optimistic
                Jeff[8D]




                quote:Originally posted by tsterkel


                hi!
                Curious about if my 63 R2 Avanti has the best axle ratio for highway travel.
                Without taking off the rear plate and counting teeth, can someone
                tell me what 4th gear 60 MPH at 6000 rpm is?

                thanks!

                Terry,
                1963 Avanti R2, 63SR1065 http://sterkel.org/avanti
                1985 Kubota L2202 (Diesel)
                2000 VW Jetta GLS
                2003 VW Jetta TDI (Diesel) http://sterkel.org/tdi
                DEEPNHOCK at Cox.net
                '37 Coupe Express
                '37 Coupe Express Trailer
                '61 Hawk

                http://community.webshots.com/user/deepnhock
                HTIH (Hope The Info Helps)

                Jeff


                Get your facts first, and then you can distort them as much as you please. Mark Twain



                Note: SDC# 070190 (and earlier...)

                Comment


                • #9
                  60 MPH at 6000 RPM is first gear in my '62

                  nate

                  (well, that is, if I could get it to hit 6000 RPM... it's all over by about 5200)

                  --
                  55 Commander Starlight
                  62 Daytona hardtop
                  http://home.comcast.net/~njnagel
                  --
                  55 Commander Starlight
                  http://members.cox.net/njnagel

                  Comment


                  • #10
                    Here's a calculator you can use to solve your problem if you know your car's tire height. I'm guessing that would be about 27 inches. That would indicate the axle ratio is a 4:11 if you were talking about 3000 rpms. There are lots of other calculators on this site as well. http://users.erols.com/srweiss/calcrgr.htm Now if you are really lazy, like me, and don't want to go out to the garage to measure your tires go here. http://www.sccoa.com/faq/tirecalc.html
                    Tim K.
                    Tim K.
                    \'64 R2 GT Hawk

                    Comment


                    • #11
                      My first Avanti (automatic) had a 3.73 rear end ration and it was almost dead on 3000 rpm at 60. I drove it for over 2 years with the speedo not working because it was easy to calculate approximate speed. At 50 it read 2500 rpm; at 40 it was 2000 and so on.

                      Comment


                      • #12
                        What did the tach read at 100 Art???[}]

                        Miscreant at large.

                        1957 Transtar 1/2ton
                        1960 Larkvertible V8
                        1958 Provincial wagon
                        1953 Commander coupe
                        1957 President 2-dr
                        1955 President State
                        1951 Champion Biz cpe
                        1963 Daytona project FS
                        No deceptive flags to prove I'm patriotic - no biblical BS to impress - just ME and Studebakers - as it should be.

                        Comment


                        • #13
                          in the event the tag is missing..look on pass side axle tube on top
                          should be the bill number...usually 6 digit-1 or more digits this number will tell, with the help of the right spicer manual, everythimg about that axle. good luck with your project..
                          incidently what is the ser number of the car?

                          Comment

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