Tip for September 2007:
Air Bag Suspension

To make air bag suspensions for your model, stop by the plumbing section of your local hardware/home improvement store and look for rubber "O" rings. They come in several sizes, and cost very little. To make the bags, stack two or more rings around a shaft and mount the unit between the suspension and frame of your model. They are already the correct color and texture, and can be adjusted to the correct height by simply adding or removing rings.