Ryan C wrote:It isn't the color. The weight actually might affect stability.
The color=stability thing is one of the biggest DG myths.
The only thing that you might be able to tell by color is that all the pink ones from the first run cooled differently from the blues or whatever. This might happen if the room they were made in just happened to be cooler. I work in a plastic injection molding shop, and even things like leaving a bay door open to the outside air can affect the way a plastic part cools. The color itself is not going to change the way it flies.
You may want to tell Westside Discs and Latitude 64 about that then... If I recall correctly they refrained from running the Northman in certain colors because they were concerned what the additive would do to the stability of the disc.
If the "additive" is something other than just pure color then its possible it could change the consistency of the plastic, which could then change the way the disc cooled....If its just color, its all the same stuff.
I'm not here to be an arrogant ass, unwilling to admit that I don't know. It is possible they are using some other color additives. I know that in Urethane blends, like Opto plastic, weighting agents are sometimes used.... All of this COULD affect the plastic to some serious extent.
I will say this... When you run different colors of parts, you will almost always run the lightest colors first. For example, if you ran black, and then ran white afterwards, you would lose like 150 shots (discs) before you were making pure white parts. I would assume that the disc makers are following this basic strategy. If that was the case, the mold might be cooler when they were running the first colors. That could make it possible that lighter colors would tend to be more stable, because I would assume that a more quickly cooled part would result in a higher parting line. This is all based on my own plastic experience.
Again though, this isn't the color itself that's changing the stability. I don't know what kind of color they would using that would be chemically different from other colors. Where I work we tend to only use about 5 colors, but all of these are totally interchangeable and effectively chemically identical. As are all plastic colorants that I'm aware of.