What do you use for weight?

ManiacMotorsports Wednesday, 4/3/2024

Hello, I'm new here, and am getting ready for my first mail-in custom tournament. I was just wondering, what do you use for weight and where do you put it? (I know placement of weight is different for every casting)



1. Tungsten weights (5g cubes)

2. Tire/pinewood derby weights (rectangles)

3. Cuttable, flexible tungsten w/ adhesive backing

4. Tungsten putty - I HIGHLY recommend this brand. It doesn't 'melt' or 'travel' like so many others.

Now, I've only been building for 2 years, so take my advice with a few grains of graphite. Try to balance your weight evenly between front and back axles so when you weigh the front of the car (half on your scale, half off) it's as close to 50/50 as possible for open track racing. Keep weight as low as possible. Veteran builders, please add to or correct any errant info, as I'm still learning and improving, too.

Welcome to the madhouse, and good luck!

  • awesome Patrick, I use tungsten putty but not that brand. TY!! — G_ForceRacing
  • Thanks! I'll consider using it in the future. I used lead this time. — ManiacMotorsports
  • Were do you get those little ones from — Bolo_Brown
  • @Bolo - eBay. I got 24 for $25. — FeralPatrick

This is just about as loaded a question as "what do y'all use to polish your axels" lol...there is no set right answer for weight placement...however the lower you can get a cars COG the better...front back bias depends on the track and the casting...it really comes down to trial and error with your builds...as for what you put in the car, well, there are a few different options depending on your level of commitment...tire balancing weights with the sticky foam backing is a great middle of the road option...some guys will use lead fishing weights...those are good because you can easily squish them with a set of pliers...other guys will use tungsten cubes or putty (the putty is a love/hate kinda thing cuz it has a tendency to leak and gum up the wheels)although I've seen some pretty interesting things inside cars, from Pennie's, to chopped up bits of other cars...whatever it takes to make the weight. There are a few good resources here at RLD, I suggest you take some time and dig into the site...it's well worth it

  • What this guy said. — FeralPatrick
  • "There are a few good resources here at RLD, I suggest you take some time and dig into the site...it's well worth it" ~ Amen. I wished I did that when I first started! — G_ForceRacing
  • Yes, good advice! Thanks — ManiacMotorsports
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Numbskull 4/3/24

Everything on the face of the earth.

I've used Tungsten putty for ease of installtion, but it melts at higher temps and will guaranteed head straight to  your axles, so I'd suggest staying with solid weights :)

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dr_dodge 4/4/24

low temp melting alloy, and brass.  Only lead use is solder.
a strip of brass,  1/2  x  1 - 1/2  x  0.070 = 6.5 grams
3 gram diecast girls, too
I then have complete control of weight placement,
and don't need to black out windows.
if possible, all my cars have full interiors.

I have also made stacks, and pipes that were well over 10-20g alone
I have a poured Maitso 50's vette that is over 200 grams (~230)
the bone shaker for run w/ dogs is 112 grams, stacks and pipes replaced with solid brass rods

but, I am a bit different.


  • Your the Master at Metal work! I stick with Lead Balls from my Black Powder Rifle and Pistol, 12 and 9 Grams eack and easy to shape. — Bent_Rod_Racing
  • thanks, I enjoy all fabrication, even tiny things — dr_dodge
  • No lie dodge…you have engendered some of the craziest things I’ve seen in Diecast…and it’s beautiful!!! — Crazy_Canuck
  • you're the professor dude! — G_ForceRacing
  • thanks — dr_dodge
  • Thanks! — ManiacMotorsports
  • Dear Dr. Dodge, you appear to be a maniac. A mad scientist full of outside of the box ideas. I can barely understand anything you post because you use things like numbers and fractions and I am unsmart. — ChaseFamilyRacing
  • One day I will ask an AI bot to explain what you type to me in the words of a second grader. Perhaps then I will grasp some of your ideas. Thank you for opening up our minds :) — ChaseFamilyRacing
  • Chase you Nailed it! — Bent_Rod_Racing
  • lol — dr_dodge
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Uncle_Elvis 4/10/24

Fishing weights 

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Kingjester 4/17/24

Car weights are my go to, although if I feel like spending the extra money I'll purchase tungsten weights at hobby lobby 

I use .45 and .50 Cal round Lead Balls from my Black powder weapons, .45 is 9 Grams and .50 is 12 Grams. Easy to shape with a flat head hammer.

  • Yes, I used small lead shot. It took about 2 of them to make one gram, so not ver heavy — ManiacMotorsports
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