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by Stoatstail50
Sun Jan 27, 2013 3:24 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

If this perception of “the rod does what it wants” remains, then we have to take this out of caster’s mind. Yes, we do and fair play for seeing the problem now but whilst I don't see any particular benefit in rubbing noses in anything here I think we should be aware how this came about.... I never ...
by Stoatstail50
Sun Jan 27, 2013 12:40 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

The tallest turbine in the world is tapered to 160m high with 90m rotors.....this will oscillate in a mightily macro sort of way much as the models on here predict.

From my perspective however, it won't be these oscillations that make the thing a real bugger to cast.... :glare:
by Stoatstail50
Sun Jan 27, 2013 10:33 am
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

Trevor If I didnt have a raft of even more deeply humdrum and pointless tasks to do already in my life I would trawl through threads for the last three or four years which repeatedly claim that these models are exactly a reflection of what is happening in a real cast...or a real rod. I've been chew...
by Stoatstail50
Sat Jan 26, 2013 11:10 am
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

I realise that we are conducting two threads on each board at once here Merlin...sorry 'bout that. When you mention you can maintain a deflection by moving along a rod, you are in a translation situation: the rod is in a steady state and is bending by inertia (rod, line) and air drag; it will unloa...
by Stoatstail50
Thu Jan 24, 2013 8:46 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

I'm with you Mark, I think the actual conditions are such that they do not correspond to all the variety of situations we can imagine with a model. Experience has told rod designers which stiffness to chose for which line and despite the uncertainty around this fit, generally speaking, there is a s...
by Stoatstail50
Thu Jan 24, 2013 6:09 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

I think I understand how the model functions, my visualiastion difficulties are because I cannot reconcile the model to a cast. It simply isn't what happens whatever the model says. This, I suspect is not because my eyes are fkd or I lack the wit or imagination to understand the maths but because t...
by Stoatstail50
Thu Jan 24, 2013 10:57 am
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

Marc The answer is yes, it is just a question of tuning parameters. Merlin Excellent, so there is a set of perameters that produce a graph showing the car in the car/spring/brick, accelerating at one rate and the brick accelerating at a lower rate up to the point where the car decelerates ? This re...
by Stoatstail50
Wed Jan 23, 2013 10:08 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

Do any of the models on here that are claimed to approximate a cast have applied conditions that reflect that effect ?
by Stoatstail50
Wed Jan 23, 2013 9:35 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

Cool, we seem to be oscillating between models now... :oh:

Just as a matter of interest, if my spring has not reached its maximum extension and the force upon it is increasing will it continue to extend or will it oscillate ?
by Stoatstail50
Wed Jan 23, 2013 9:09 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

As the spring extends, so the retarding force on the falling mass increases, thus it's rate of acceleration decreases. When, during a normal casting stroke, does the rate of acceleration of either my hand or the rod butt decrease ? If it did, and sadly it sometimes does, the rod would indeed begin ...
by Stoatstail50
Mon Jan 21, 2013 8:12 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

Yep, well, I think I can have a go at answering Springers original question... The reason I ask is that if fly casting is all about such high percentages of leverage then why is it that heavier loads cast better with rods which bend deeper? Im thinking in particular about long bellied lines and ska...
by Stoatstail50
Mon Jan 21, 2013 7:03 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

I know what a third class lever is Walter....my query was in response to this from Gordy He says... I think that we can agree that the broomstick functions as a third class lever, but because of the more complicated dynamic response of the spring in the rod to external forcing accelerations the rod...
by Stoatstail50
Mon Jan 21, 2013 5:37 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

Cool...yep, I understand all of that, but does the bendy rod operate in any way as a 3rd class lever or not.
by Stoatstail50
Mon Jan 21, 2013 3:30 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

No mechanical advantage as I mentioned it is a mechanical disadvantage. If you wanted to lift a heavy weight you would not use a fishing rod or a broomstick held in your hand. Yes, I completely understand your point. It's one of the issues I have had in understanding this model with respect to the ...
by Stoatstail50
Mon Jan 21, 2013 2:36 pm
Forum: Flycasting - 2 Handed
Topic: Rod Loading - Spring v Lever
Replies: 602
Views: 161583

I think that we can agree that the broomstick functions as a third class lever, but because of the more complicated dynamic response of the spring in the rod to external forcing accelerations the rod (even to first order) does not. Really..??!!!.. Blimey..thats going to set the cat amongst the pige...