Get Your NFC/CCS ERN/TP/PR URRS Chart Right Here!
How’s that for a set of acronyms? Well, if you know what they mean, the you know what the chart is all about (if you don’t know yet, have a look here). North Fork’s itinerant graphic designer slaved for two days over hot pixels to get this thing into shape, and now it’s yours to download and have for your very own.
The chart is available—thanks to Dr. Hanneman’s behind-the-scenes work—as a free PDF file. It covers ERN/TP/PR numbers from 1 to 200, and is set in cents (U.S. cents), grams/kilos, and grains. It does not tell you how to use the CCS system. It is a data chart only! It is also big, as in 11X17 inches, so unless you have a large-format printer, you may need to take a little trip over to a Kinkos, a PiP, etc.
We had a good once-over of the chart before releasing it, but if anyone finds errors, please let us know! We want it to be accurate and will adjust as necessary going forward.
So, without further ado, click the pic to download (643KB):
Very Sweet!
Download, Upload to Costco, 20″x30″ poster ready for pickup in 3hrs! $8.99 and hanging in my shop by tonite.
Thank you very much guys.
That is a thing of beauty. I’ll be printing up a nice copy and getting it laminated for the wall in my shop.
Jason, thanks for your hard work, and NFC for making it available for use custom builders!
Buzz
Now that this thing is “in the wild,” the big question among the CCS-ers out there has become: HOW DO I READ IT?! I’ll get some proper visual aids up soon, but until then, try this:
The bottom of each blue grid shows the numbers of cents (or rolls of cents) used when trying to get any of the ERN, TP or PR values. Those values (1, 2, 3, 4, etc.) are shown in pale red next to the orange lines, which indicate the range of that particular ERN, TP, or PR value. The small bright red numbers over on the left side of the grids show the “tenths” of the ERN/TP/PR values (or for very powerful rods, as on the bottom grid, the whole number value).
For example, one may have used 41 cents to bend a rod to one-third of its length, and one wants to find the corresponding ERN value. One then looks at the grid where the “40″ cent value can be found, and moves over one grid unit to where the value would be “41″ (each unit is a step of “1″). One can then see that the value of “5″ (in pale red) starts right there (the orange line begins at that point). One can also see that on the far left of the grid, the small red number “0″ corresponds to that orange line starting position. That means that the ERN (or TP or PR) value is 5 + .0 — in other words “5.0″.
If the cents used to bend a rod to one-third of its length would have been 45, instead of 41, one would still look at the grid where the “40″ cent value can be found, but then one would move over five grid units to where the value would be “45″ (halfway between 40 ad 50). Moving up the grid to the orange line, one can see that it indicates an ERN (or TP or PR) value of 5 + .6 (the bright red numbers on the far left indicate .6 at that point). Thus the ERN (or TP or PR) is “5.6″.
And for one more…take a look at the top of any of the blue grids. See the “grams” (and kilos) values?” Let’s say you used 200 grams to bend a rod to one-third of its length and you want that ERN number. It works exactly the same as for the cents, just follow the grid line to orange line. Where they intersect gives you the value that you are after. So, 200 grams gives me a value (ERN, TP or PR) of 9 + .8. In other words, “9.8″.
Easy, right?
Mike, Buzz—Great to hear that you like it! You can thank Dr. Bill for the behind-the-scenes legwork on this. He sent me “Dr. Bill’s Homemade URRS Extravaganza Chart,” and I just went in and translated it via a couple days work in Adobe Illustrator (which also allowed me to “pretty it up” a bit).
To make sure that this resource and “how to read it” stays fresh, this post, along with the above instructions, will be made into a permanent page over in the right-hand sidebar. I’ll get to it today.
JB
Just a clarification, because many have misunderstood the proper deflection distance – You are not flexing the rod along 1/3rd of its length, you are deflecting the rod downward a distance which is equal to 1/3rd of its length. So a rod 96 inches in length will be deflected a total of 32 inches.