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Easy race day weight adjustment

January 4th, 2006 · 2 Comments

The scale you use to weigh your car while you build it might not register exactly the same as the official scale at your race’s registration. You might find out you need to add or remove weight at the race in order to meet your weight requirement.

When you build your car, make it about two tenths of an ounce under weight. Then sink a couple of short, wide wood screws into the bottom of the car. Take them back out and insert some lead shotgun pellets or small tungsten beads into the holes and replace the screws.

Now on race day if you need to remove weight, take out some beads or screws. If you need to add weight, put in a few more beads.


2 comments so far ↓

  • Hypertech Pine // Sep 23, 2010 at 10:12 am

    The absolutely best way we found is to run you car up to 4.95 on a digital scale using internal weights. Then recess a small portion under the rear of the car and add titanium washer bits via glue gun underneath up to 5.06. Then race day its easy to pop off small pieces one at a time with a knife and reweigh until official scale shows at 5.0 (really 5.05 if their scale shows only tenths) This assures maximum weight while not affecting the looks.

  • Hypertech Pine // Sep 23, 2010 at 10:14 am

    Oh one other important thing. If you organization doesn’t have a 5 gram calibration weight for their scale, give them one. Then there are absolutely no arguments on race day about scale accuracy!

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