Talk:C/5 orthogonal

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Rakes and Spaceships

I am trying to find information on the existing c/5 rake technology. I know there are forward rakes of periods 60, 65, 70, 75, 80, and 165+5N. Are there any period 20-55 or 85-160 forward rakes? Since all of the rakes are based on circulating gliders, then I presume you can remove half of the gliders from the lower period rakes (60-80) to get periods 120, 130, 140, 150, and 160. Also, are there any backward rakes (can be as low as period 15, but it would need to use a different method than shuttling gliders), or any methods for turning a forward rake into a backward rake? These rakes are closely related to spaceships, as it is quite trivial to turn a forward rake into a spaceship by adding another spider. Are there any spaceship periods that are known that are not made by rakes (besides 10, 15, and 30)? If at all possible, provide RLE files.

For examples of c/5 technology, see:

  • Jason Summers' jslife pattern collection,
  • Paul Tooke's c/5 rake collection
  • David Bell's c/5 object archive


~Sokwe 22:00, 10 August 2009 (UTC)