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  • Tyco ?

    What is the difference between a Tyco 440 x2 and an HPX2 or are they the same?
    If there are differences does anyone have any pictures of an HPX2 chassis.

    The reason I ask I read that narrow Tyco body can fit a.... 440 Magnum, 440-x2, and an HPX2.

    Only I'm not sure what a Tyco HPX2 is.

  • #2
    This is from the Slot Car Talk Forum:

    The two wide chassis types (440X2 and HPX2) are very similar. Main differences are the actual chassis (though they are interchangeable) and a 3 ohm armature in the Mattel version (HPX2). The remaining parts are very much the same. The Tyco chassis is preferred as it is more accurately molded (the holes are located better, etc.). The HPX2 chassis were made in very old and poorly modified molds and are less accurate. The 3 ohm arms will be faster on tracks with long straights but are usually too fast for most home tracks.
    A simple way to get performance out of a HPX2 chassis is to use P4 traction magnets (turns a pigs ear into a silk purse). These can be procured for reasonable money from Harden Creek, Lucky Bobs and many others.

    The rear bulkhead on the HPX2 also doesn't have the wings that support the bottom of the traction magnet, Definitely a step down from the original 440-X2.

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    • #3
      Maddman thanks for finding this information for me.
      Sometimes when looking at different Tyco cars that are for sale they would mention the HPX2 and I didn't know the difference.
      This helps a lot.

      Not sure but I think I saw somewhere where they mention an HPX3 and 4 maybe.

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      • #4
        There are pictures of the Tyco and Mattel chassis here: ModelMotorist: Identifications: HO Scale Slot and Slotless Car Chassis
        The only difference that I have seen between the wide Tyco 440X-2 and the Mattel HPX2 is the part of the chassis that locates the traction magnets. The little shelves on the motor shaft side were eliminated. The Model Motorist picture of the HPX2 does not show that, possibly because the chassis is actually a 440X-2.

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        • #5
          The HPX2 comes with shorter traction magnets too (original Tyco 440-X2 on the left, Mattel HPX2 on the right). The nub on the bottom doesn't sit as close to the track, so the Mattel cars don't handle turns as well. They're rockets on the straights, though. And poly mags really wake them up, as said above. HPX3 and HPX4 are used by various Ebay tuners. They take the Mattel HPX2 (which used to be $4 a chassis) and give them a whole racing treatment for folks who want to go faster on their home tracks, with existing Tyco or Mattel bodies. I have heard of people burning up the Mattel 3 ohm motors, but I'm still running hardcore poly mags in a few and they're still as strong as ever.

          Last edited by el gecko; 07-22-2021, 07:29 AM.

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          • #6
            I believe that the 3 ohm motors were intended to be used in cars made for battery powered sets. For years Wizzard sold a hot stock balanced and trued version of the Greenwire arm, it was a cheap way of lopping a half second or better from your lap times. The arms can't take a lot of heat, the motor brushes need to be fully broken in at reduced power before you can open it up on the track.

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            • #7
              Thanks everyone for all the help and understanding about these little differences between cars that might look the same when their not.
              It will help me to know and understand what I might be buying.
              Also now I know what to do to improve the chassis, parts, magnets and such.

              You know you think your paying for a certain kind of car. Only when you get it and run it you find out it's something way different.

              Anyway thanks.

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              • #8
                One important note: Mattel issued one set with a blue Charger and yellow Superbird which used a modified HPX2 chassis. The two chassis are slightly different from the basic HPX2 and are different from each other. They were modified to accommodate larger wheels on those two cars. The differences are not major but they are there.

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                • #9
                  Originally posted by Grandcheapskate View Post
                  One important note: Mattel issued one set with a blue Charger and yellow Superbird which used a modified HPX2 chassis. The two chassis are slightly different from the basic HPX2 and are different from each other. They were modified to accommodate larger wheels on those two cars. The differences are not major but they are there.
                  Thanks that's something I'll try to be aware of when shopping for Tycos. And I only run the cars that I have on my home (hobby) track.
                  So the most important thing is that the cars I buy are in running condition. And I don't mind working and tweaking on the cars a little hear and there.
                  That's something I enjoy doing anyway with these HO vehicles.

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