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Rod Blank Curve

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How much curve in a rod blank is generally acceptable to you? Just got in a new rod, and it has a little more than I’m used to seeing (in a graphite rod). 
 

I don’t believe it affects the rods performance, and this one is assembled on the spine, which is (arguably) nice. But when it’s enough to be visible it kind of affects the aesthetics of a rod. 
 

So to the techy rod guys… what say you?

7DD397F0-EEF7-4CA9-BB74-CCFAAD417FFC.jpeg

I don’t know if that’s technically a problem, but it would drive me insane. I would see it every time I pick up the rod. 

5 hours ago, AmmoGuy said:

How much curve in a rod blank is generally acceptable to you? Just got in a new rod, and it has a little more than I’m used to seeing (in a graphite rod). 
 

I don’t believe it affects the rods performance, and this one is assembled on the spine, which is (arguably) nice. But when it’s enough to be visible it kind of affects the aesthetics of a rod. 
 

So to the techy rod guys… what say you?

7DD397F0-EEF7-4CA9-BB74-CCFAAD417FFC.jpeg

 

This signals problems: 1- Bad storage in very hot condition and with the rod under tension. 2- The carbon mesh was blended with low quality resin, with low heat tolerance.

  • Author
1 hour ago, Deleted account said:

Along with the camera...


Trying to get a clear picture of something 7” away, and 7’ away at the same time is….. challenging. 

  • Super User

tripod and focus-stacking - spiral-wrap slow jig rod

 

ATby3Hk.jpg

 

@AmmoGuy - I would consider that rod damaged beyond use - I suspect it will break on a good fish. 

You can be sure it came off the mandrel straighter than that.  It was probably bent during transport 

  • Author
3 hours ago, ska4fun said:

 

This signals problems: 1- Bad storage in very hot condition and with the rod under tension. 2- The carbon mesh was blended with low quality resin, with low heat tolerance.


I’m not sure that’s correct. It is VERY hard to a graphite blank to take a set. I’m pretty sure this blank finished the manufacturing process thus way. 

 

19 minutes ago, bulldog1935 said:

tripod and focus-stacking - spiral-wrap slow jig rod

 

ATby3Hk.jpg


“Point iPhone at the rod and hit the button” is my method. ?

  • Super User
9 hours ago, AmmoGuy said:

How much curve in a rod blank is generally acceptable to you? Just got in a new rod, and it has a little more than I’m used to seeing (in a graphite rod). 
 

I don’t believe it affects the rods performance, and this one is assembled on the spine, which is (arguably) nice. But when it’s enough to be visible it kind of affects the aesthetics of a rod. 
 

So to the techy rod guys… what say you?

7DD397F0-EEF7-4CA9-BB74-CCFAAD417FFC.jpeg

What rod is that? I don't think that would be acceptable. 

  • Super User

Most rod blanks aren't perfectly straight but are built in such a way that the curve isn't noticeable. Most custom rod builders don't build on the spine but the straightest axis to minimize the appearance of the curve.

This is pretty extreme though and I would definitely take it back.

There's no world in which I keep that rod. I've sent rods back for much less noticeable curvature.

  • Super User
1 hour ago, dodgeguy said:

Rods should be perfectly straight.

There is no such thing, straight to the eye, yes.

  • Author
5 minutes ago, Deleted account said:

There is no such thing, straight to the eye, yes.

 

(In my best dodgeguy voice)

 

LEW'S RODS ARE ALWAYS PERFECTLY STRAIGHT!

 

 

  • Super User
21 minutes ago, AmmoGuy said:

 

(In my best dodgeguy voice)

 

LEW'S RODS ARE ALWAYS PERFECTLY STRAIGHT!

 

 

Straight to my eye yes they are but I haven't checked everyone I've seen. Most brands are straight. I also check to make sure the guides are straight. If they aren't I don't buy it. If I ordered the rod and the blank is not straight or the guides it goes back.

  • Super User
2 hours ago, bulldog1935 said:

tripod and focus-stacking - spiral-wrap slow jig rod

 

ATby3Hk.jpg

 

@AmmoGuy - I would consider that rod damaged beyond use - I suspect it will break on a good fish. 

You can be sure it came off the mandrel straighter than that.  It was probably bent during transport 

I've seen some glass rods warp when left in hot cars and other toastie places, and graphite rods will take a set, but assuming that pic is accurate, that's extreme. I'd be curious to find out if it started life that way or not.

  • Author
5 minutes ago, Deleted account said:

I'd be curious to find out if it started life that way or not.

 

The guides are assembled perfectly opposite the direction of the curve, and on the "spine".  So I'm assuming it started out this way. 

Have to agree that would drive me nuts and I'd return it too. 

  • Super User

I don't get why anyone would even consider keeping it. 

No blank is arrow straight but a bend that deep in the blank is unusual. Whether or not it indicates potential failure is conjecture but better safe than sorry. 

On 7/20/2022 at 12:37 PM, Deleted account said:

I've seen some glass rods warp when left in hot cars and other toastie places, and graphite rods will take a set, but assuming that pic is accurate, that's extreme. I'd be curious to find out if it started life that way or not.

Actually this is pretty common. Blanks losing mesh stability over thermal stress.

  • Super User

I would send that back. A little bit off is normal, but that looks like there is pressure being applied to it.

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