Originally posted by kelltym88
Then to get the overall height all I need to do is take the original length dimension and multiply that by 2.66. That would also go for figuring out each different body tube section as well, right? How do I get/figure out what type of nose cone?
I gues I should back up and say that the 2.66 upscale is for the Photon Disruptor I (the later version is based on a BT55 upper airframe with a BT50 lower airframe.)
OK: You're right regarding the length multiplier. In the case of the Disruptor I, the upper airframe is a BT50W, which is 9.5" long. To upscale to a BT80, multiply 9.5" by 2.66 and get an overall length of 25.31", or 25.25" to certainly be close enough.
The lower tube is a BT20D, which is 6.5" long. Upscaled by 2.66, this gives you a BT70 or BT 2.01 (whichever you decide to go with) being 17.32" or go with 17.25" (one end is inside the upper tube anyway.)
Then just upscale your fin patterns on a copier at 266%. Just be sure to omit the indentation in the root edge of the main fins to accomodate the body wrap which retains the motor hook, as yours will probably not have this external wrap on that lower tube.
As far as engine mounts, I recommend using stuffer tubes the same length as your lower (BT70 or T 2.01) tube.
For the nose cone - well, you have a choice to make. The plans call for a PNC 50X, which is rounded at the top and 3.25" long (above the shoulder.) Upscaled, that gives you a cone that is 8.66" long. You could go with the Estes PNC 80K (Phoenix style) nose cone, which is 8.15" long. It won't match the shape exactly, but for an upscale such as this you won't miss that 1/2" (what I'm saying is that you'd probably not notice the difference, as the overall package will be very impressive anyway.) If you feel the strong need to be "exact" or "true to plan," Sandman can turn you a wonderful upscaled 50x. He's done so for me (BT70 sized) for my Atlantis, and also for himself on his current Constellation upscale (featured in a current thread in the Scratch Built forum.)
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I don't have any real good dimensions on the Photon Disruptor II model, because the part numbers in the plans don't cross reference to any published list that I'm aware of. I do know that it is BT55 based on the upper airframe, though. My suggestion would be to go after the Photon Disruptor I because the dimensions are available.
Good Luck!
