bandit365 wrote:
the other thing is how do you test the stiffness of a rod as i have to rods both medium heavy action but the one is stiff and the other is as stiff as eighty year old man that does not know what viagra is.
can you help?
The difference might be the action of the rod. Remember that you get different medium/heavy action rods
This is what action means Action: This describes how much of the rod deflects (bends) when you put pressure on the tip. A fast action rod will bend in only the top third or less of the blank, a medium or moderate action will bend in the top half or so and a slow action will bend starting in the lower third of the rod. Sometimes slow action rods are termed 'parabolic', meaning the bend of the rod is similar throughout the length. This description is subject to the type of rod you may be talking about at the time; a fast action fly rod or steelhead rod will bend much lower and more easily than a fast action bass rod or offshore rod.
Most bass rod actions are fast to very fast because this action generally provides better sensitivity and faster power for hook setting. By faster power we mean the rod 'shuts off' faster, or the bend ends higher on the blank, which means you don't have to move the rod as far on the hookset to get into the stiffer part of the blank. Fast action rods are great for most applications where a short to long casting distance is involved and single hooks are the rule, such as worm and jig fishing.
Medium and medium-fast rods will usually provide a little more casting distance and still provide adequate hooksetting power. These actions are often used for applications that involve treble hooks, such as crankbaits and topwater lures or other reaction baits such as spinnerbaits. The 'bite' of a treble hook is not as deep as a big single worm hook and it is easier to tear the hook out of a strong fish, plus the slower action will not pull the lure out of the fish's mouth before it fully engulfs it. The type of lure you use will usually determine the action of the rod you should use.
Taper: Often used synonymously with "action", taper describes not only the thickness of the rod but also the thickness of the wall of the blank and where along the blank less material is used allowing more bend. For our purposes taper is the same as action.
Power: This describes the strength of the rod or it's lifting power. When someone says this rod has a lot of backbone, they mean it has a lot of power. Power ratings are usually describes as heavy, medium heavy, medium, etc. Power is closely related to the line strength; heavier power rods will handle heavy line weights and lighter powers will be good for light lines. It is fairly important to keep your line test within the limits printed on the rod since a heavy power rod will snap light lines too easily and heavy lines can snap a light rod. Power ratings vary by the type of rod described; a heavy bass rod and a heavy offshore rod will definitely not feel the same. One might be rated for 25lb line and the other for 80lb line.
The type of water you're fishing will help determine the power of the rod you should select. Thick, heavy cover will require a strong rod to get the fish out before it can tie you up. Clear, open water will often require thin, hard to see lines in order to get bit, meaning you will need a lighter power rod.
Responsiveness: Related to modulus this is an idea that reflects the ability of the entire rod to flex under load and release the stored energy in the cast. As we will see below, a finished rod may be the result of different layers of different material, all of which contributes to the responsiveness of the rod. One thing is for sure, the lighter the rod, especially the tip, the more responsive it will be. As Gary Loomis puts it, weight is the deterrent to performance. Overall, the higher the modulus the more efficiently it will store and release energy, which gives you the ability to flick an accurate cast on a lower trajectory.
This article is from Tacklewarehouse