Shimano Curado 200 M HG Real-World Re-Spool Test
ReelCalc Real-World Test #003
Shimano Curado 200 M HG Real-World Re-Spool Test
Switching from 10 lb InvizX fluorocarbon to 10 lb Sunline Super Natural mono without replacing the backing.
ReelCalc Real-World Test Result
The new line fit well, and the backing stayed put. About 65 yards of fresh Sunline mono brought the spool back to a fill that looked right.
The Reel and Line Used
Reel
- Model
- Shimano Curado 200 M HG (CU200HGM)
- Type
- Right-hand baitcaster
- Use here
- Squarebill crankbait setup
New working line
- Product
- Sunline Super Natural nylon monofilament
- Strength
- 10 lb
- Package diameter
- 0.010 in / 0.260 mm
- Target amount
- 65 yd
- Retail spool
- 330 yd / 300 m
Existing backing
- Product
- Berkley Trilene Big Game monofilament
- Strength
- 10 lb
- Listed diameter
- 0.012 in
- Earlier setup
- 108 yd, left in place
Spooling gear
- Knot
- Uni-to-Uni
- Counter
- Rapala digital line counter
- Supply spool
- Table-mounted spooling stand
Why the Fluorocarbon Was Replaced
The Curado started with 65 yards of InvizX over mono backing. After reties, trimming, tangles, and break-offs, that top section had gotten short. There had also been two breaks during casts that seemed to happen away from the knot. The cause was unclear.
It was time for fresh line, and a chance to try mono for squarebill fishing. That does not mean InvizX was faulty; it was simply a different line to try on this setup.
Why This 10 lb Mono Was Chosen
The ReelCalc line database helped find a mono close to the thickness of the old InvizX. With a similar diameter and the same length, the new line should take up about the same spool space. The diameter mattered, not just the 10 lb label.
| Working line | Published diameter | Working length |
|---|---|---|
| Seaguar InvizX 10 lb fluorocarbon | 0.010 in / 0.26 mm in the catalog | Originally 65 yd; shortened with use |
| Sunline Super Natural 10 lb mono | Package: 0.010 in / 0.260 mm ReelCalc catalog: 0.0102 in | 65 yd replacement target |
Sunline's package rounds the inch size to 0.010; ReelCalc lists it as 0.0102 in. These are close listed sizes, not lines measured by hand for this refill.
The ReelCalc Setup
Entering the new Sunline line and a 65-yard length gave 108 yards of Big Game backing, matching the earlier setup. That backing was still usable, so there was no need to start over.
The reel used here is model CU200HGM, matching the Curado 200 M 200 HG RH entry selected in the calculator.
How the Curado Was Re-Spooled
Strip Off the Old Line
The shortened InvizX was removed down to the backing knot.
Leave the Existing Backing in Place
The Big Game underneath was still usable, so it stayed on the spool. No new backing was installed.
Connect With a Uni-to-Uni Knot
The new Sunline mono was joined to the existing Big Game backing using a Uni-to-Uni knot.
Wind On the New Mono
The Sunline spool went on the stand, with the line running through the Rapala counter. The new mono was wound on with steady tension.
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Stop at About 65 Yards
The counter measures in feet, so the target was 195 feet for 65 yards. It finished at 195.4 feet, or about 65.1 yards.
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Check the Finished Spool
The fill looked right: not obviously overfilled or left well short. The photos below show the final line level from two angles.
Trying This on Your Own Reel?
Is 65 yards enough for everyone?
No. It was the amount chosen for this squarebill setup. Leave enough working line for your longest casts, fish runs, and trimming. Your fishing may call for a longer section.
What if the new line is thicker, or more line is needed?
Check the backing amount again with ReelCalc. Either change takes up more space, so some backing may need to come off. Keep an eye on the fill as you wind; do not force on extra line just to reach a number.
Can backing stay on the reel indefinitely?
No. Reuse it only while it is still in good condition. If it is damaged or questionable, replace it rather than covering it with new line.
A Note About This Re-Spool
This was a refill over existing backing, not a test of how much line an empty Curado can hold. The 108-yard backing figure comes from the earlier ReelCalc setup; it was not remeasured. Only the fresh line went through the counter, and the final fill was checked by eye.
The useful takeaway: Changing line does not always mean stripping the whole reel. With a similar diameter and the same working length, this Curado could switch from fluoro to mono and keep its usable backing.
Line details: Sunline Super Natural and Seaguar InvizX.
Plan Your Own Working-Line Refill
Find a suitable line diameter, choose enough working line for your fishing, and check the backing plan for your reel.
Related Curado and ReelCalc Resources
- Curado 200 M 200 HG RH Guide: the Reel Used in This Test
- Sunline Super Natural Diameter & Capacity Guide
- Seaguar InvizX Guide: the Previous Working Line
- Berkley Trilene Big Game Guide: the Retained Backing
- How Much Backing Do I Need on a Fishing Reel?
- How Much Line Should You Put on a Baitcaster?
- Compare Lines in the Diameter Database
- More ReelCalc Real-World Tests
