Mr B... 4.75”

I like it Chuy...I was wondering why the 4 slot was only a 1 multiple, but I can see in your drawling that you calculated that location for the starting energy and leverage values, multiplying as needed up and down from there.I'm wondering how the difference in leverage values on the slope, effect things as they go through the curve and transition into a 1 to 1 value in the flat. But I think that's going to the idea of having your weight as compact as possible.

Looks great Chuy !....nice concentrated small block motor with no lateral or rearward leverage. I haven't seen an advantage with weights in the spur. I'm not sure if you can see through the tape, but this years car with the yellow wheels has 2 cubes in the spur, the red car has one cube in the spur. Neither one are particularly fast.

I think that once all the wheels are on it and it is flipped upside down... you will have a bigger weight bias going.

Do you have a full weight on one side?

is that wood cover laser etched?

That's what they said about another product I see. I was told that you want the car to balance 1" in front of the rear axle. But, after being here on the forum it appears as though it is all you can get to the rear and balance with any extra needed. We have no picture or description of where the car balances. Without a track I'm not sure how you would check for stability. But, I would test both.

As long as the rear wheels are centered and the DFW doesn't lift over the guide rail, what is this whole stability thing anyway?

When I used to race we had to do a lot of balancing. But, these cars remind me more of a dragster. The more HP you can get to the ground the better. It is a short run. And, if you watch those cars they don't look very stable.

Eagle :Stability is very important with these cars, too much leverage behind the wheels and you're SOL. The issue is the weight is in the rear, which can be tricky to keep in a straight line.

Imagine throwing a Javelin, picture one end having a 5 pound tip on it. If you threw it with the weighted end at the front it would be pretty stable. Now try throwing it with the weighted end in the back, how stable would it be?

I was playing around with placing a 3 cube slab weight at different locations at the rear of the car. The white dots represent the center mass of the weight. I placed it across the car behind the axle, and across the car in front of the axle.Placing the weight longitudinal along the side with it hanging over the car represents the same motor as the slab going across the back of the car, but adds lateral bias.The same with in front of the axle.

I had the weight in six different locations in total, two with a lateral bias to the left, two with a lateral bias to the right, one with no lateral bias with rear leverage , and one with no lateral bias with forward leverage.I used double sided tape to hold the weight in place,and didn't re-lube through the process.

So what do you think the results were?

Ember, seems like a bit of a trick question. The weight is part or all of the weight in the car?

If aero is a factor you would think it would be faster with the weight front to rear then side to side.

Reviewing this forum I would guess the weight across the back would be the fastest.

But, my experience tells me that the middle picture (weight across body in front of the axle) was the fastest.