Walter & Group...
[GH] So far, no one has tried to answer Liam Duffy's question as to the origin of the word "Quiz".
[GH] More answers before Ally comes in with his explanations and critique :
>From Bryan Martin :
Hi Gordy,
my take on the quiz:
1.) Are any two casts identical? No, too many variables.
2.) Does it matter where a loop is first observed? If you mean when it is formed then yes.
3.) How would you recognise loop formation? Difficult to see the initial point but it is when the line overtakes the rod tip.
4.) and if it could be observed how would it help you to teach me? Point of loop formation and loop geometry would indicate how the caster has moved the rod tip through the casting stroke. Use this to make any necessary corrective changes to the casting stroke.
5.) Defining “useful energy” as that which is the line requires to extend correctly. When does the rod cease to provide “useful energy” to the line? Prior to loop formation, at any time when there is no component of rod tip acceleration in the target direction (the line will still extend but not correctly if that is defined as traveling in the target direction). And also after loop formation. You can’t push a piece of string!
6.) Is it possible for the line and rod tip to travel together without useful energy interchange? If the rod axis and line are in alignment and moved at constant velocity then yes.
7.) If the mass of a fly line is considered to concentrated at a single point and the rest of the line is considered weightless does this help to illustrate the location of the line launch direction? The launch direction (I assume you mean elevation, i.e. direction as viewed in the vertical plane) is the rod tip direction at launch point.
7.) If the line is now considered to be a chain of different link sizes to replicate the taper what change does that make to your consideration? Mass distribution in the line results in loop formation. Each ‘link’ is influenced by the preceding link and also influences following links.
8.) Does the line launch direction indicate where useful energisation of the line ceased? Energisation of the line in the launch direction ceases at loop formation.
9.) It is better but is it absolutely necessary to have a rod that bends? No, you can cast with a broomstick, unpleasant but possible. You can also cast without a rod.
10.)
Somewhere around d to upper e. Loop formation will occur when the rod tip travels though that direction. Rod tip velocity and acceleration components in that direction appear to reduce as the rod tip travel continues.
Bryan Martin - FFF MCI/APGAI/STANIC Qualified Fly Casting and Fly Fishing Instruction
Devon Fly Fishing
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[GH] Comment by Server Sadik :
HI Everyone,
Quite a bit has happened since I wrote my last paper and some recent misinformation needs to be corrected. A lot more needs to said and explained and I will be writing another paper in the very near future. I make reference to some things I will be discussing and explaining in that forthcoming paper.
Till then Happy Holidays _ Server
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[GH] Server,
I'll look forward to your next paper.