Gear Ratio to Line Takeup Discrepancy Between Manufacturers

[Bazoo]

I have been using an Abu Garcia Black Max baitcasting reel with 6.4:1 ratio as my primary reel. For a while it was my only baitcasting reel.

 

Then a member gifted me a Bass Pro Shops Pro Qualifier 2 with 5.3:1 ratio.

 

Then I was able to acquire a cheap Lews Speed Spool with 7.5:1 ratio.

 

Today I checked all 3 for line takeup per handle turn:

 

Abu Garcia            23"

Pro Qualifier 2      23"

Lews SS                28"

 

This surprised me, the Pro Qualifier 2 and Lews were right on what I'd expect, and the Abu Garcia is low compared to my expectations.

 

They are all full of line, so it isn't from that discrepancy. The Abu is spooled with 12 pound Trilene XL, on a backer, the Pro Qualifer 2 is spooled with 10 pound Trilene XL, and the Lews Speed Spool is spooled with 10 pound Trilene Big Game. I don't see how the pound test/diameter would make any difference, especially since they are so close to the same.

 

Any ideas why the Abu Garcia and the Pro Qualifier 2 would be the same IPT, why the Abu Garcia would be lower than expected? Is it just the difference in manufacturers?

 

Thanks for looking, 

Bazoo

[Team9nine]

Different spool diameters between models. A larger spool diameter can offset a slower speed reel, and vice versa. How much line you spool on can also play a small role, as well as things line line diameter and spool width (narrow vs. wide), though more indirectly.

[garroyo130]

How many times did you run the test? Its odd that your other 2 results are in line with manufacturer IPT but Abu is 23 vs 26 published. 

[Bazoo]

I ran the test 2 or 3 times per reel.

[LCG]

You are about to go down a deep rabbit hole

 

Spool diameter, line diameter (not lb test), Line type (Braid vs Nylon stack on the spool differently), Line capacity (full vs 3/4), gear ratio vs Ipt, manufacturer stated specs vs real world specs (what diameter line did they use to establish amount of line and ipt), torque vs speed, etc.

 

[bulldog1935]

It's only a rabbit hole if you overthink it, and published IPT has little to do with it (though they're probably reporting a full spool).  

 

Immediate IPT exactly = (Gear Ratio) x Pi x (spooled Diameter of line)

 

 

 

What you're measuring with your test is how full your spool is, which is the Only Variable.  

 

No Tom, it only gets more complicated if you want it to get that way.  

[WRB]

The actual spool diameter and how full it’s filled affects IPT.

PI X Diameter = circumference, it’s that simple when measuring the reel full of line.

The factors of how full is full is the only question.

Now pull off 30 yards and test IPT things get more complicated with spool width and line diameters etc.

Tom