I'm not familiar with "hoop strength" in tapered tubes? Hookes law is typically only applies to parallel wall cylinders-typical pressure vessel design using Hookes Law omiting the third dimension, not tapered tubes
I do not believe in PMsMSc , BEng (Hons) and Pm sent.
that's unfortunate Lohi, it was about to become interesting.I do not believe in PMs
Scanny - please divulge on NRX vs Reaction in non-physics format - I haven't played with either?
Lohi - Hexagraph construction makes sense to me apart from the tubular spigots which means flat spot and/or ovality surely? they did consider cane style spliced ferrules at one point I believe to alleviate this
Springer - the TCR DH's in my experience aren't tip action like the trout rods just very strong - the recovery isn't as fast as some DH either; TCX appears to have quicker recovery but not the power.
Does ovality really occur during normal "optimal" loading casting or just bending into that 30lb heading off to the rapids?
Perhaps we need archetyphal examples of tip vs medium vs through action with slow/med/fast recovery rates we can all relate to for clarity?
Examples of different rod actions are many, off the top of my head good examples would be;
Fast Action - Guideline LPXe, Vision GT4 Catapult
Medium Action - Guideline Le Cie, Loop Multi
Slow Action - Scott LS2, Vision Cult, Hardy Demon
All of the above have fast/med fast recovery. Very few rods have slow recovery these days due to the advancements in carbon fiber although I can think of examples, probably best I dont mention them.
I did quite a bit of testing with the Vision Cult's(13'2, 13'4 and 13'8) and for me they felt more like a med-fast rod then a med/full flex rod. They had a lot more tip action then I anticipated and a solid butt section. A very nice and versitale set of rods and especially the 13'4 was a real masterpiece. I did compare them with Meiser 14' #7 S rod, Echo TR 13' #7, Echo DH 13'6 #9 and DTX 14' #9 and found the action on the Cult's to be stiffer then the Echo's and more in the same ballpark with the S rod and DTX. Don't know if you guys have a different batch of them in the UK or something? Or maybe it has something to do with casting style.
What are you confused about Newfly?
Confused about how different actions affect the way a rod is cast.
For example if an average but competent castor who can cast a reasonable distance with good presentation using say a Hardy Swift changed to a different actioned rod, would he have to change the way he casts and if so in what way.
Vision themselves describe the Cult as a full flexing rod, I have found this to be the case myself. As for any similarity to a DTX I would say chalk and cheese.
One thing for sure is that people often use or test a rod with lines that were different in length and weight from what the designers originally intended. This of course can have some effect on changing how a rod feels. Manufacturers often prefer to steer clear of line weight recommendations and this can further exasperate the problem IMHO.