Announcement

Collapse
No announcement yet.

HO proxy cars Magnetic downforce

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • HO proxy cars Magnetic downforce

    Click image for larger version  Name:	DSC01015.JPG Views:	5 Size:	147.9 KB ID:	96918 Click image for larger version  Name:	DSC01016.JPG Views:	5 Size:	158.5 KB ID:	96919 Click image for larger version  Name:	DSC01017.JPG Views:	5 Size:	157.7 KB ID:	96920 Click image for larger version  Name:	DSC01018.JPG Views:	5 Size:	157.9 KB ID:	96921 Click image for larger version  Name:	DSC01019.JPG Views:	5 Size:	154.1 KB ID:	96922
    Last edited by Austin; May 3, 2021, 02:27 PM.
    Austin
    Merrimack, NH

  • #2
    Click image for larger version

Name:	DSC01020.JPG
Views:	134
Size:	142.5 KB
ID:	96924 Click image for larger version

Name:	DSC01021.JPG
Views:	130
Size:	149.8 KB
ID:	96925 Click image for larger version

Name:	DSC01022.JPG
Views:	126
Size:	149.9 KB
ID:	96926 Click image for larger version

Name:	DSC01023.JPG
Views:	127
Size:	154.5 KB
ID:	96927 Click image for larger version

Name:	DSC01024.JPG
Views:	132
Size:	144.3 KB
ID:	96928
    Austin
    Merrimack, NH

    Comment


    • #3
      Click image for larger version

Name:	DSC01025.JPG
Views:	126
Size:	158.6 KB
ID:	96934 Click image for larger version

Name:	DSC01026.JPG
Views:	125
Size:	155.9 KB
ID:	96932 Click image for larger version

Name:	DSC01027.JPG
Views:	127
Size:	149.5 KB
ID:	96931 Click image for larger version

Name:	DSC01028.JPG
Views:	131
Size:	147.5 KB
ID:	96930 Click image for larger version

Name:	DSC01029.JPG
Views:	126
Size:	154.2 KB
ID:	96933
      Austin
      Merrimack, NH

      Comment


      • #4
        Click image for larger version

Name:	DSC01030.JPG
Views:	136
Size:	156.5 KB
ID:	96957 Click image for larger version

Name:	DSC01031.JPG
Views:	129
Size:	164.4 KB
ID:	96958 Click image for larger version

Name:	DSC01033.JPG
Views:	136
Size:	150.8 KB
ID:	96959 Click image for larger version

Name:	DSC01045.JPG
Views:	132
Size:	161.5 KB
ID:	96960
        Last edited by Austin; May 3, 2021, 02:37 PM.
        Austin
        Merrimack, NH

        Comment


        • #5
          Click image for larger version

Name:	DSC01035.JPG
Views:	139
Size:	139.2 KB
ID:	96941 Click image for larger version

Name:	DSC01036.JPG
Views:	127
Size:	135.8 KB
ID:	96942 Click image for larger version

Name:	DSC01037.JPG
Views:	132
Size:	154.3 KB
ID:	96943 Click image for larger version

Name:	DSC01039.JPG
Views:	131
Size:	140.3 KB
ID:	96944
          Austin
          Merrimack, NH

          Comment


          • #6
            Click image for larger version

Name:	DSC01040.JPG
Views:	137
Size:	142.0 KB
ID:	96946 Click image for larger version

Name:	DSC01041.JPG
Views:	126
Size:	162.4 KB
ID:	96947 Click image for larger version

Name:	DSC01042.JPG
Views:	129
Size:	157.9 KB
ID:	96948 Click image for larger version

Name:	DSC01043.JPG
Views:	129
Size:	162.0 KB
ID:	96949 Click image for larger version

Name:	DSC01044.JPG
Views:	127
Size:	142.5 KB
ID:	96950 Click image for larger version

Name:	DSC01045.JPG
Views:	127
Size:	161.5 KB
ID:	96951
            Austin
            Merrimack, NH

            Comment


            • #7
              Cool comparative info! Thanks for sharing!

              Comment


              • #8
                Looks like that Dodge and the Camaro will be curve huggers!
                "Stay off the wall and out of the infield...and wheels down."

                Comment


                • #9
                  Hey I'm winning something

                  Matt​​​​
                  ​​​​

                  Comment


                  • Austin
                    Austin commented
                    Editing a comment
                    And at the 5.5440 time mark you are in the running on my track

                • #10
                  The cars are showing a wider range in downforce readings than I would have expected. Last summer I built my own tester and checked out my cars.



                  The tester could be calibrated to give similar readings to commercially built devices, but at least I can get reproducible relative readings. The amount of downforce that a car would have will vary with the strength of the magnets and the square of the distance between the magnets and the track rails. Because of the latter effect tiny differences in track clearance would have a bigger effect than you would expect. About a year ago there was some controversy about the strength of certain magnets. Because of QC issues some makes of magnets varied greatly in strength. I measure all of my magnets with a magnetometer. By my measurements early Dash magnets were good for 850-900 gauss, but some of the later ones were as low as 650 gauss. When the Dash Killer Bees magnets came out people complained that some builders were able to get stronger ones that were not available to everyone and it was proposed that the magnets should be checked when the cars had their tech inspection. I am not aware of how that worked out.
                  One more thing that would affect downforce would be the height, thickness and composition of the rails themselves.
                  It will be interesting to see how the cars with a great deal of downforce will fare. My own testing has indicated that too much magnet can limit the top speed of a car for several reasons. One of those reasons is added rolling resistance. Right now I have a WizzJet car that is simply glued to the track, but lacks top speed. I need to find more horsepower, switch to less powerful magnets and/or find firmer tires.

                  Comment


                  • #11
                    That is pretty dang cool Rich. Let me open a new thread to ask at least one question about it.
                    Over here.
                    https://www.hrwforum.com/new-content/47

                    Scott
                    Why doesn't my car run like that?

                    Scott

                    Comment

                    Working...
                    X
                    UA-149438709-1