bullhead. Don Green of Fenwick and Sage fame said to put the guides at right angles to the spine, thus making the rod track the same on both fore cast and back cast. Read here; https://swiftflyfish...or-not-to-spine
I've read another explanation that supports this, using rectangular materials to show that the weakest direction is the favored direction of bend and that guides in alignment with the spine (or stiff direction) will cause rod twist. I don't recall where, it was a bamboo site I think. It made perfect sense when I read it.
this what Steve said a while back on the rod building forum and a more recent one
Posted 13 November 2006 - 04:39 PM
To spine or not to spine is an argument as old as rod building. All I can tell you is this. I have done both ways...and "I personally" cant tell a difference ethier way myself . Now if someone says they can then I cant honestly tell them they cant can I? maybe they are a better caster than I, or they just have a better feel than I. It only takes about a few minutes to locate the guides on a spine though, so I do it. Theres no reason not to IMO. If the blank has a 'crook" in it that goes to one side, then I would send that blank back myself so that shouldnt play a factor in wether or not you spine a rod IMO.
Posted 25 March 2017 - 08:24 AM
The "to spine or not to spine" argument has been hashed out many many MANY times on every rod building website out there for decades. What it boils down to is this-
The spine in a fly rod is such a small thing far as true "rotational force" that it is next to pointless to even give it a second thought. Even in a 10wt and above you simply will not notice any difference in a rod that is spined and one that is not spined. I have tested that statement out first hand with identical rods I have built over the years. Having built over 1300+ rods to date I stopped spineing them many years ago and always build on the straightest axis. The whole "rotational force" thing is pointless. Factor in the weight of a reel hanging down from the rod, the fish pulling one way and the angler not always having the rod exactly 90 degrees to the surface of the water or directly in line with the fish etc etc and all that spine/rotational force garbage goes right out the window.
As with anything you will always have some people that feel one way and others that feel another. If someone feels they want to spine a rod then who am I to tell them not too, they are the ones building it and more power to them. My advice to you though Arkman is to not worry one bit about redoing anything on that rod. It would simply be a waste of time IMO to worry about any spine. Finish building it and have fun fishing it.