Last week I added weight to my SC10 4x4. I started with 90g (3.2oz) additional to see the results. Since I added weight, I also stiffened the suspension to make the truck handle a little flatter. My truck now has blue springs rear and yellow front. With a blue swaybar front and yellow rear (could use a stiffer rear bar- it keeps making the truck more stuck).

The truck got much easier to drive and got faster and more consistent lap time wise. So I kept adding weight until the lap times started going in the wrong direction. The number I arrived to was 4.2 total ounces.

With the extra weight the truck does not have to be "driven like a 2WD" anymore. It lands better after jumps, it rolls over obstacles better, it corners flatter. It was 1.5 seconds on average faster on a track that runs 36+ second laps.

I got really close to the track record on a night where the grip was causing everyone to go about 0.5-1 seconds slower per lap vs the last week's results. My truck was 1.5 seconds faster than the previous week. I ended up the Top Qualifier by about 35 seconds (almost a lap). I beat my best time on the track in EVERY RUN. I ran an extra lap in the 10 minute main (and these are 36+ second laps!).

While the truck is still not at Losi Weight, It comes in at 6lbs 5oz and the stability gained from the weight genuinely made my car easier to drive, much more consistent and fast. Lap in, lap out.

I know a lot of people on here think that lighter is better. That's fine. For those that are actually curious to find out what a heavier SC10 4x4 will accomplish, will actually be pleasantly surprised.