Walter & Group...
From Jim Valle:
Gordy and Group,
For those attending the 2009
Conclave in Loveland, CO.
The details of our
Group get together discussed briefly
a few months ago, here’s the latest information.
Meet at 7:30 am on Thursday
7/30 at the Casting Rendezvous site scheduled to be held at the Walt Clark
Middle School.
Bring your own Coffee and/or
Casting Gear!
Opportunity to meet each other
and do some casting before the other workshops begin.
Gordy will be there for as long
as he can. Everyone is welcome to stay as long as they like and cast,
discuss, work on a problem or experiment. The Rendezvous runs all day Thurs and
Fri If you have open times …stay… teach a little, watch others teach or continue
to play. Should be lots of fun!
Looking forward to seeing old
friends and meeting new ones,
Best
Jim
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.....I'll be looking forward to actually meeting some of the members I've never actually seen and will treasure seeing all of you !
Gordy
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A LITTLE "ROD MATH" FROM AN ENGINEER
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Message from Eric Cook:
I talked with Rene after reading his question (Rod Length Advantage) and gave him an explanation and “verbal diagram” with simple rigid lever equation. I gave him an example of fighting a fish while having the butt of the rod jammed into your stomach (fulcrum). The hand (exerting force, Fe) is a certain distance (de) from the fulcrum. And the Load (Lf) is the fish on the line at the end of the rod of a certain length (df). If you really need a diagram to see this, I’m sure if you search the web for 3rd class lever (exertion force between fulcrum and load) one will come up. The balanced equation for this lever is Fe x de=Lf x df. For an example of rod length and “advantage” let’s apply a few numbers.
10 ft
rod:
Lf=10lb
df=10ft
de=1ft
Fe=?
Fe=[(10lb)(10ft)]/1ft
Fe=100lb
5 ft rod:
Lf=10lb
df=5ft
de=1ft
Fe=?
Fe=[(10lb)(5ft)]/1ft
Fe=50lb
From the examples we can see that in both cases the fish has the advantage since from the fishes point of view, the system is a 2nd class lever (load between the fulcrum and exertion force). That is why I don’t view it as a shorter rod being more of an advantage but in reality it’s less of a disadvantage. 3rd class levers are not for gaining mechanical advantage (force) but are for gaining distance and speed.
Later, I called Rene back when I realized that I didn’t say anything about the bending of the rod (effective rod length), not have the rod jammed in the stomach (still a 3rd class lever, just a change in fulcrum), how much pressure someone can apply to the rod without applying that much pressure on the fish (and tippet) and so on. Rene stopped me and said I had already made the sale and he understood from the simple rigid lever explanation. That’s a shame since I was ready to throw a lot of “what if’s” at him.
Eric
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Eric...
I like the idea that no matter the length of the fly rod, the angler does not have the mechanical advantage ! The longer the rod the greater the "disadvantage".
Very different when fishing with handlines.
This is one reason Santiago was able to handle that fictional monster marlin in Ernest Hemingway's book, THE OLD MAN AND THE SEA (Until the sharks prevailed.)
Bob Andreae and Dave Sylvester will remember the time off Mamma Rhoda Rock in the Bahamas one night when I hooked a huge cubera snapper and fought the fish on a 400lb. test handline with gloves. The line half hitched around my gloved hand and I got pulled all the way across the deck. Might have gone overboard were it not for the fact that I was able to quickly cleat the line to the aft starboard cleat. In the end, a shark got the fish. The head of that fish was so big that when we put in into an 80 qt. Igloo cooler, the top wouldn't close.
Gordy