Tom...
Check out my additional notes below our answers to # 9.) in green. (Scroll way down for details.)
Gordy
From: "Gordon Hill" <hillshead@xxxxxxx>
To: cooper@xxxxxxxxxxxxxxxxxx
Subject: Re: Fly Casting, "Math"
Date: Mon, 22 May 2006 10:28:23 -0400
Tom...
My comments in BOLD CAPS.
You did really well !!!!
Gordy
From: "North Fork Flies - Tom Cooper" <cooper@xxxxxxxxxxxxxxxxxx>
Reply-To: "North Fork Flies - Tom Cooper" <cooper@xxxxxxxxxxxxxxxxxx>
To: "Gordon Hill" <hillshead@xxxxxxx>
Subject: Re: Fly Casting, "Math"
Date: Mon, 22 May 2006 03:16:12 -0400
My answers are in red----- Original Message -----From: Gordon HillSent: Sunday, May 21, 2006 8:14 AMSubject: Fly Casting, "Math"Jerry...
My server may have prevented some of the Group from getting my questions on, "Fly Casting Math." Would you help by sending this out ? Of these 9 questions, I'd expect an MCI candidate to correctly answer 6 of them (*) An exceptional candidate to be correct on 8.
1.)* You are given the speed of the fly leg of a loop for a cast with no shooting of line. What is the formula for calculating the loop speed?
Loop speed is 1/2 of the fly leg speed.
YES.
2.) Now you have a cast made with a line shoot. You know the speed of the fly leg and the speed of the rod leg. What formula is used for determining loop speed ?
Loop speed is 1/2 of the fly leg speed + the rod leg speed
IT'S: FLY LEG SPEED + ROD LEG SPEED DIVIDED BY 2.
3.)* You are casting a fly tied on a # 12 hook. What formula or, "rule" might you sue to help determine the approximate, "X" size for your class tippet ?
Rule of 3's. Divide fly size by 3 (or 4) or a 4X tippet
YES.
4.)* What formula or, "rule" would you use for determining the diameter of your 5X tippet ?
Subtract 5, The X size, from .011 (the diameter of 0X tippet) or .006.
YES. (ANOTHER WAY TO PUT IT IS TO SUBTRACT THE X NUMBER FROM 11 AND DIVIDE BY 1000.)
5.)* You know your tippet size to be 4X. What formula might you use to determine its pound breaking strength ?
Sorry to say I don't know this one, but with the wide range of test breaking strengths does a rule of thumb work?
"RULE OF 9'S"...SUBTRACT THE X NUMBER FROM NINE AND YOU GET AN APPROXIMATE VALUE FOR BREAKING STRENGTH. (LESS RELIABLE THAN IT USED TO BE PRIOR TO THE NEW TIPPET MATERIALS MANY OF WHICH ARE STRONGER/DIAMETER.)
6.)* What, "rule" or formula might you use to come up with the weight in grains for the first 30' of your #6 designated fly line ? (A rough approximation)
Line weight X 30 or 6 X 30 = 180. I like to use ((Line Weight X 25) + 25) or 6X25 = 150 +25 = 175 It is more accurate on lighter weights.
I AGREE. USING 30 GETS YOU CLOSE IN RANGE FOR A 4 WT. LINE. IT IS LESS ACCURATE AS YOU GO IN EITHER DIRECTION FROM THAT.
7.) What is the so-called, "IGFA Formula" for determining the weight in pounds of a game fish ? You have only the length of the fish and the girth of the fish measured in inches.
Girth Squared X Length/800 = Weight
YES.
8.)* Can you come up with a very general, "rule of thumb" to describe a typical fly leader in terms of percentage for butt section, tapered section, and tippet section ?
60 - 20 - 20
YES.
9.) You are trying for maximum distance. can you come up with a simple formula for determining the approximate length of your shoot when knowing the amount of line carried on your last back cast ?
Back cast length x 1.333 = total forward cast length.
I HAVE NOT HEARD OF THAT FORMULA.....I'LL TRY IT AND SEE. (DO YOU HAVE A REFERENCE FOR IT ?)
I'VE USED: 50% OF THE LINE CARRIED FOR THE LENGTH OF THE SHOOT. (THE LENGTH OF THE SHOOT IS THE VALUE I ASKED FOR IN THE QUESTION.)
After typing the above comment, I went out and we tested it. I took note of the fact that the 1.333 formula means this:
The caster can carry 60' on his last back cast. His total distance for his presentation would then be 60 X 1.333 which is 70.9 feet.
Now most CCI candidates who pass make a 75' distance cast when carrying about 50'. Your 1.333 formula would mean that they could achieve only 1.333 X 50 = 66.5'
I can make a 90' cast routinely by carrying 60'. This makes the 1.333 formula short of the mark, as I see it. (Most MCI's I've coached can do the same thing once they reach test level.)
Gordy
Tom Cooper
* expected of an MCI candidate.
Gordy