Sketches

[trebuchet03]

Originally Posted by Tango Charlie

French curve?

I've used a set of three since high school - very useful for making continuous curvature sketches

Originally Posted by Tango Charlie

But no, I draw freehand. I love graph paper!

[Tango Charlie]

Many times we've heard that a 15 degree slope is about maximum for the tail end of a vehicle. What is that as a ratio? 1:5? 1:6.357? If I knew, I could easily sketch it out on my graph paper. Ah, maybe I SHOULD have paid attention in class, instead of drawing Spads and Fokkers...

[Bicycle Bob]

3.732: 1

P.S. It is easy to construct a handy 15 deg reference. Draw an equilateral triangle from three equal sides, cut it out, and then fold it in half twice, like a paper dart.

[Tango Charlie]

Wow! Very cool! Thanks!
If I just round it to 4:1, that would be close enough for sketchin'.

[gone-ot]

...if you draw on "quadrille" (1/4-inch grid-lines) paper, you can simply do the "rise-over-run" relationshipt (at one of the four corners of the sheet of paper) to get a "visual" indication of the slope; ie: SLOPE = RISE(Y-axis)/RUN(X-axis)

...so your 4:1, would be: SLOPE = 1(RISE)/4(RUN) = 0.25

...P.S. -- I still have my set of french curves packed away someplace.