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  • magnets & weight

    Ok, I've had my track for a year now and have been tinkering and reading the forums.
    10 days ago I removed the middle magnet from a 1/24 C7R and added new Carrera tires.
    Enjoyed driving it and it really didn't seem any slower although I do not have a timing system yet.
    Yesterday, I messed around and finally figured out how to remove the rear magnet.
    Ran a few laps and it's very squirrelly.
    Added some rear Super Tires and it calmed down a bit after a few more laps.
    I think some added weight would help as the tires break loose under acceleration.
    My question would be what kind of weight, how much, and where to locate?

  • #2
    Magnets add 'weight' to a car, if your magnet gives 30g magnetic downforce you'll need to add a fair chunk.

    I'm not a believer in adding 2g and testing, the old timers will say add weight until your lap times suffer.

    As to where, there's three main places, behind the guide, in front of the motor, along the outside edges of the chassis between the front & rear wheels...I prefer in front of the motor and out wide.

    Here's a useful video...

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    • #3
      Now don't forget tyres are 90% of your cars handling, you can improve any car with good tyres or tyre prep.

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      • #4
        This is not a suggestion to go backwards in your testing but have you tried taking the back mag out and leaving the center mag in? A few people run that way and are very pleased with the way the car handles. It's not stuck down and slides very nice. Carrera's are not very tuner friendly. I leave the tuning to other brands.
        Dave

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        • #5
          Carrera cars are already the heaviest things on the market. If you're transitioning from magnetically assisted traction to pure gravity traction, then the "squirrely-ness" will be down do your driving style (assuming tires are clean, at least, if not also true). You just can't drive them the same as when magnets are helping keep it down.

          But, traction is everything, in either case, so make sure those tires are nice and round and perfectly clean on a perfectly clean track. If you've been racing silicone tires without cleaning them obsessively, then you haven't been getting the most out of them, even with magnets helping to hold them down.

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          • #6
            The group at Cincyslots run Carrera 1/24 cars without magnets on Carrera track. Have a look on youtube for some of their videos, the cars look like they go pretty good to me. I am sure if you contacted Bruce he would offer some suggestions on how they 'tune' the cars.

            cheers
            David

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            • #7
              Originally posted by dw5555 View Post
              This is not a suggestion to go backwards in your testing but have you tried taking the back mag out and leaving the center mag in? A few people run that way and are very pleased with the way the car handles. It's not stuck down and slides very nice. Carrera's are not very tuner friendly. I leave the tuning to other brands.
              Dave
              I put the middle one back in and you are right, it does handle better, almost too good?

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              • #8
                Originally posted by Fl Outlaw View Post

                I put the middle one back in and you are right, it does handle better, almost too good?
                If the car is a little more stuck down than you prefer, you can put more shims between the middle magnet and chassis [on the newer cars with the magnet INSIDE the chassis] to raise the magnet higher from the track.
                The older cars with the magnets on the UNDERSIDE of the chassis have shims above the magnet that can be removed to raise the magnet higher from the track.
                Another option on all D/124 cars is to flip the axle bracket inside the motor pod as this raises the chassis higher off of the track. In my experience, all of my D/124's have come with the chassis in the lower setting.
                Some cars such as the Capri's also have an adjustable height front axle [just flip the axle bracket].
                Randy
                Last edited by 32lbKING; 11-28-2021, 10:29 AM.

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                • #9
                  Thanks Randy, gives me some more options to explore.

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