Customising with Lead Tape

Lead tape is the most effective and reversible way to change a racquet's performance characteristics. A few grams of tape applied in the right position can transform a racquet's feel, stability, and power profile. It costs almost nothing and is used by both Tour players and recreational players worldwide.

Why It Works

Lead tape adds mass at a specific distance from the racquet's pivot point and long axis. Because swing weight and twistweight are functions of mass × distance², adding even a small amount of weight far from the pivot or axis has a disproportionately large effect.

Formula: ΔI = Δm × r²

The change in moment of inertia equals the added mass (kg) times the square of its distance (m) from the pivot. Weight at the head (large r) has a larger effect than weight at the handle.

Common Positions and Their Effects

3 & 9 o'clock (sides of the head)

The most versatile and recommended starting position. Adding equal amounts at both sides:

• Increases twistweight significantly (most efficient position)
• Increases swing weight moderately
• Increases balance slightly toward head-heavy
• Increases static weight

Typical starting amount: 0.5–1g each side (1–2g total)

Use this if: shots feel unstable on wide hits; you want more stability without drastically changing balance.

12 o'clock (top of the head)

Adds maximum swing weight per gram, with minimal twistweight increase.

• Increases swing weight greatly
• Increases twistweight minimally
• Pushes balance more head-heavy
• Increases static weight

Typical amount: 1–3g

Use this if: you want significantly more power and stability against heavy incoming balls; you are a strong player who can handle the extra swing weight.

Warning: Adding too much weight at 12 o'clock without addressing the handle can make a racquet feel very top-heavy and slow. Compensate with some weight in the handle if you add more than 3g at 12.

Handle (inside grip or under butt cap)

Adding weight in the handle:

• Decreases balance toward head-light
• Slightly increases swing weight (handle is close to the pivot, so effect is small)
• Slightly increases twistweight
• Increases static weight

Typical use: Silicone sealant or tungsten putty injected under the butt cap: 2–8g

Use this if: racquet feels too head-heavy after adding head weight; you want to increase total weight without affecting dynamics much; you play lots of volleys and want a more maneuverable feel.

Butterfly (equal amounts at 10 & 2 o'clock)

A refinement of the 12 o'clock approach. Splits weight between 10 and 2 positions:

• Increases both swing weight and twistweight more equally than pure 12 o'clock
• Common in professional customisation setups

Weight Guide

| Position | Amount | Primary Effect | |---|---|---| | 3 & 9 (sides) | 0.5–1g each | Stability on mishits (+twistweight) | | 12 (top) | 1–3g | Power and stability (+swing weight, head-heavy) | | Handle | 2–8g | Balance towards head-light, adds total weight | | 10 & 2 (butterfly) | 0.5–2g each | Balanced SW + TW increase |

How to Apply

1. Clean the surface — use isopropyl alcohol on the frame surface where you'll apply the tape.
2. Cut small pieces — start with 5 cm strips of 1/4-inch wide tape (~0.5g per strip). You can always add more.
3. Apply and press firmly. Use a fingernail or coin to press edges down completely.
4. Cover with grip at the handle, or with frame tape / overgrip at the head to protect the lead from peeling.
5. Measure and play-test before committing to the final amount.

Calculating Spec Changes

Adding 1g of lead tape at the following positions changes swing weight approximately:

| Position | SW Change per 1g | Balance Change per 1g | |---|---|---| | 12 o'clock (340 mm from butt) | +9 kg·cm² | +1.5 pts HH | | 3&9 o'clock (280 mm from butt) | +6 kg·cm² | +1.2 pts HH | | Handle (50 mm from butt) | +0.3 kg·cm² | -2 pts HL |

Approximate values for a standard 685 mm racquet. Use the Arcus Calculator for precise predictions.

Tip: Use the Arcus Customization Calculator to simulate spec changes before applying tape. Input your current specs and target values, and the calculator will tell you exactly where and how much tape to apply.

When Not to Use Lead Tape

Lead tape isn't always the answer:

• If the racquet is already heavy and you have arm issues, adding more weight will make things worse.
• If you find yourself adding lots of weight everywhere to "fix" a racquet, it may be the wrong frame for you — consider a different model.
• Don't apply lead under a shrink sleeve or permanent overcoat without being sure you'll want it permanently.