Does anyone remember what each foot increase of rod length increases distance ?

[cyclops2]

 Having a bad senior morning.   Going from 6' to 7' rod  using 4# soft Ande Monofilament.

Thank you.

[bulldog1935]

Rotational speed (angular velocity) being equal, every 20% increase in rod length doubles cast distance. 

Simple ballistics. 

 

btw, a trebouchet makes a pretty good spiral cast

 

[WRB]

You need to take in the rod flex, it’s not a rigid arm.

Between a 6’ to 7’ rod of the same power/action/ lure/line the tip velocity will be greater increasing casting distance. 40 yards to 48 yards to equal rod length increase %....

Tom

[Hulkster]

for what its worth, i've been upgrading all my 6'6 and 7' rods to 7'5 and 7'6 rods and I do notice longer casting. how  much I don't know 

 

I won't buy a rod anymore that isn't 7'5 or 7'6. I like them too much. 

Im a bank fisherman though, so the extra casting distance really helps. 

[Tennessee Boy]

Casting distance is not a function of the length of the rod.   There are many variable that determine the distance of a cast.  Theoretically,  if you increase the distance from the tip of the rod to the fulcrum (pivot point) by a certain percentage then the velocity of the tip will increase by the same percentage for a given angular velocity.  If you increase the length of the rod by adding length to the butt of the rod,  the tip velocity will not changed.    

 

At lease that's what they taught me in my engineering dynamics class 40 years ago.  They may have changed the laws of physics since then.  

[JustJames]

Also upgrade from 6’ to 7’ rod doesn’t really mean you gain 12” of casting advantage. Often time longer rod would have longer handle to balance out the whole length. 

[Choporoz]

4 hours ago, bulldog1935 said:

Simple ballistics. 

Lol....is that class in the same wing as elementary organic chem?

[bulldog1935]

@Choporoz - no, it's in sophomore physics.

________________________________________________________

 

Just like the trebouchet, rod flex is a spring - it doesn't subtract from release velocity,  as long as your cast weight is in the normal working range of the rod. 

Should have put on my hippers to return to this thread. 

The fact is, people don't cast a longer rod with the same angular velocity as they do with a shorter rod, but the physics is sound - take it up with Galileo and Newton. 

 

 

 

Try choking down on the rod handle with your next 2-hand cast, and watch how far it freaking goes. Even more, get brave, on release let go of the rod with your thumb hand, and continue to stretch with your choke hand. 

[WC53]

Don’t leave out wind resistance and terminal velocity of different lures. Simple math…

[bulldog1935]

those are going to be constant for what you're throwing, whether it's a rock, a boat tail hollow point, or a fishing lure. 

What we're talking about is the result of release velocity increase gained by a longer rod. 

Where are those hippers...

 

I've been side-by-side with guides (more than one) on their deck when they explained how my spiral cast didn't load the rod properly.  We were throwing the same unweighted shrimp with a hook, and my baitcaster could double their spinning cast distance by making a good spiral cast (that works out to a 20% increase in release velocity).  They didn't like that, but I made them look good at the dock. 

To jerk that same 20% increase on a spinning rod, the live shrimp goes even farther, but it leaves the hook behind. 

[Choporoz]

I wasn't challenging anything you said about casting....or trebuchets....my (too subtle?) point was that I don't find anything about ballistics, mechanics or any other physics to be 'simple'... in fact, it was Statics that began my precipitous drop through and out of engineering 

  

[WRB]

Casting skill has more to do with casting distance then simply using longer rods. Everything being equal longer rods help a skilled angler.

Tom

 

[new2BC4bass]

54 minutes ago, WRB said:

Casting skill has more to do with casting distance then simply using longer rods. Everything being equal longer rods help a skilled angler.

Tom

 

Used to have a young friend that could make the rod whistle on a cast.  No way was I going to get the same distance with the same rod and reel.  Didn't have his power.  Didn't help that I am about 40 years older than he is.

[BigAngus752]

10 hours ago, bulldog1935 said:

Rotational speed (angular velocity) being equal, every 20% increase in rod length doubles cast distance. 

Simple ballistics. 

 

btw, a trebouchet makes a pretty good spiral cast

 

 

7 hours ago, WRB said:

You need to take in the rod flex, it’s not a rigid arm.

Between a 6’ to 7’ rod of the same power/action/ lure/line the tip velocity will be greater increasing casting distance. 40 yards to 48 yards to equal rod length increase %....

Tom

 

6 hours ago, Tennessee Boy said:

Casting distance is not a function of the length of the rod.   There are many variable that determine the distance of a cast.  Theoretically,  if you increase the distance from the tip of the rod to the fulcrum (pivot point) by a certain percentage then the velocity of the tip will increase by the same percentage for a given angular velocity.  If you increase the length of the rod by adding length to the butt of the rod,  the tip velocity will not changed.    

 

At lease that's what they taught me in my engineering dynamics class 40 years ago.  They may have changed the laws of physics since then.  

 

5 hours ago, bulldog1935 said:

@Choporoz - no, it's in physics.

________________________________________________________

 

Just like the trebouchet, rod flex is a spring - it doesn't subtract from release velocity,  as long as your cast weight is in the normal working range of the rod. 

Should have put on my hippers to return to this thread. 

The fact is, people don't cast a longer rod with the same angular velocity as they do with a shorter rod, but the physics is sound - take it up with Galileo and Newton. 

 

 

 

Try choking down on the rod handle with your next 2-hand cast, and watch how far it freaking goes. 

I counted all my toes today and did NOT eat any of my crayons.  

[Bird]

Every time I upgrade a rod it's always a shorter version that I go with.

I simply can't cast a long rod with much accuracy, especially docks and tight cover.

 

Seems like every year, rods get longer and longer, I ain't biting. Lol

[cyclops2]

Thanks all of you. But I changed my casting hand / wrist to Arthritic. Wind was high. I had no accuracy at all.  But The distance was very good into the wind, with a 11/2" Rapala  floater.

 

I measured the ACTUAL casting lengths of both rods leaning in the corner. The 7' is 6" longer with reels side by side. ............BUTT     I refilled the Mitchel 300. It has the new Ande 4# right near  the spool lip.  That probably is the biggest change.