anyway...
The point was, I'm not using a slide rule. I dont own one. Like I said, I admire the use of outside tools, I just don't have them. Authenticity is great, I was just thinking about the math involved. Just used pen, paper, and my scientific calc. I'm not too worried about the authenticity of it.
Thanks for the link. I'll see if I can't track down something like whats mentioned. However, I got this typed up if anyone wants to read what I did and I figure I'll just link it in case.
It'll get you exact numbers, and no reading of charts or anything extra to print, just write it down...
You can find my method @
www.hoofinasia.net/TDC.htm