Compound Bow Strings: Do They Stretch?

Compound bow strings, like all bow strings, are susceptible to stretching over time. This is due to the constant tension they are under, even when not in use. While a slight stretch is acceptable and beneficial as it allows the bowstring to absorb excess kinetic energy and soften vibrations, too much stretching can be harmful. This is because strings consume energy with each stretch, and longer strings consume more power.

Compound bow strings are not intended to be elastic

Materials for bow strings are chosen for their resistance to stretch. High-quality strings will stretch less, while cheaper strings will stretch more. However, all bow strings will eventually stretch to the point of needing to be replaced. This is due to the constant extreme tension the strings are under, even when the bow is not in use.

The amount of stretch in a bow string can be monitored by keeping an eye on the bow tuning and the peep sight. If your shots are degrading, or the peep sight is rotating, then the strings may have stretched.

To reduce the amount of stretch in a bow string, it is important to regularly inspect, clean, wax, and properly store the strings. It is also recommended to restring compound bow strings every two to three years, or every year in the case of target bows, which are used more frequently.

Bowstrings are consumable and will need to be replaced

All bowstrings stretch over time, and this is normal. However, if the strings become too fatigued, the draw length of the bow and ATA measurement will increase, and it will no longer be possible to tune the bow properly. This is known as "string stretch" or "creep". Creep is the worst of the two scenarios, as it is a non-recoverable elongation that requires immediate bowstring replacement.

Shooting frequency and environment play a significant role in determining how often bowstrings need to be replaced. Target bows, which are typically used more frequently and shoot lighter arrows, should have their strings replaced annually. Hunting bows, on the other hand, can go for two years between replacements. If you shoot very frequently, you may need to replace your strings every few weeks, as a typical string can last between 2,000 and 2,500 shots.

Proper storage and maintenance can help extend the life of your bowstrings. When storing your bow, keep the bowstring fully waxed, free of dust and debris, and out of direct sunlight and extreme temperatures. Mildew, mould, and dank conditions should also be avoided. A well-maintained and properly stored bowstring can last up to three years. Conversely, poor storage conditions can reduce this lifespan to a matter of weeks.

Additionally, the initial stringing process matters. Knowing how to string a compound bow correctly and doing it properly will improve the string's lifespan. It is recommended to visit your local archery shop or club if you are unsure about the process, as improper stringing can be dangerous.

It is also important to monitor your bowstring for signs of excessive stretching. One way to do this is by observing the rotation of your peep sight, if you have one. As the strings stretch and relax with age, the peep sight will rotate around the string. On cheaper strings, the peep may make a complete rotation once or twice a year.

Another way to monitor string stretch is by checking your axle-to-axle (ATA) measurement. If your strings are fatigued, this measurement may be significantly out of specification, indicating that it is time to replace them.

In summary, bowstrings are consumable and will need to be replaced periodically. The replacement frequency depends on various factors, including shooting frequency and environment, storage and maintenance practices, and the initial stringing process. Proper monitoring, maintenance, and storage can help extend the life of your bowstrings, but ultimately, they will need to be replaced to maintain performance and safety.

The frequency of use impacts the lifespan of bowstrings

For example, if you shoot a compound bow very frequently, a bowstring's lifetime is typically 2,000–2,500 shots. If you go through that many shots in a few weeks, you'll need a new string every few weeks. On the other hand, if you shoot weekly, your bowstrings might only last 1–2 years.

Additionally, the type of bow you use also affects how often you need to replace your bowstring. Target bows, which are used more frequently than hunting bows, typically need to be replaced annually, while hunting bows can go two years between replacements.

Proper storage and maintenance of your bow can also impact the lifespan of your bowstring. Keeping your bow string fully waxed, free of dust and debris, and stored in a case away from direct sunlight and extreme temperatures can help prolong the life of your bowstring. Conversely, poor storage conditions can significantly reduce the lifespan of your bowstring.

Therefore, it is important to consider the frequency of use and proper storage and maintenance when determining how often to replace your bowstring. Regular inspection, cleaning, and waxing of your bowstring can also help extend its lifespan.

Bowstrings should be regularly inspected, cleaned, waxed and stored properly

Compound bow strings do stretch and this can be dangerous, so it's important to regularly inspect your bowstring for any signs of wear and tear. This should be done at the start of the season, whether you're hunting or target shooting.

Look out for fuzzing on the bowstring or cables, which is normal wear, but can get worse over time. Pay particular attention to wear areas, such as where the cables pass through the cable slide, and below the centre serving, where archers will often rub the bowstring with their arm. Always keep an eye out for broken strands, which can be dangerous and cause damage to you or your bow. If you notice your peep sight has started to twist when drawing your bow back, then your bowstring has likely stretched. Serving slippage is another sign of a stretched bowstring.

To keep your bowstring in good condition, it should be regularly cleaned, waxed, and stored properly.

Cleaning

To clean your bowstring, you can use an old piece of centre serving to wrap around the string and pull off any dirt or wax build-up. Alternatively, use dental floss or any other type of string to do the same thing. Pulling hard will ensure the string is clean, and you can always add a new layer of wax after cleaning.

Waxing

Waxing is an essential part of bow maintenance and will prevent the string from fraying, add a waterproof element, and help retain twists. A properly waxed bowstring will feel smooth and slightly tacky. If the string feels dry or starts to discolour or fuzz out, it's time to wax it. Most top archers wax their strings every two to three weeks, and before competition if rain is forecast.

To wax your bowstring, you will need string wax, fabric cord, leather, or flexible card. Check your string is in good condition, with the right amount of twists for your set-up. Apply the wax directly to the length of the string and cables, then use your fingers to massage it in, pushing it into all the gaps between the strands. Wrap the fabric cord, leather, or card around the string and push it up and down to even out the spread of wax. Remove any leftover lumps with your fingers.

Storage

When storing your bowstring, make sure to keep it away from anything with a petroleum base, such as WD-40, as this can be harmful to the string.

Custom bowstrings are pre-stretched, tightly served and come with warranties

Compound bow strings are consumable resources, wearing out over time and eventually needing to be replaced. Custom bowstrings are an excellent option for archers looking to maximise their bow's performance and longevity.

Custom bowstrings are pre-stretched, tightly served, and often come with warranties. This means that they are less likely to stretch over time, providing stability and confidence to archers. The pre-stretching process involves applying hundreds of pounds of tension to the bowstring fibres, reducing the likelihood of further stretching and creep. This process also helps to stabilise peep sights, as custom bowstrings are designed to prevent peep rotation.

The tight serving of custom bowstrings ensures that the thin waxy thread wound around the bowstring to strengthen it in high-wear areas remains intact. This prevents serving separation, which can cause emergency fixes during archery season. The serving process is tailored to the specific requirements of different bows, ensuring optimal performance.

Custom bowstrings are made from more durable fibres, which are less prone to stretching and creep. This durability also helps to keep cams synchronised, improving the bow's tunability and overall feel. As a result, custom bowstrings can improve accuracy and consistency in archery.

In addition to their performance benefits, custom bowstrings also offer a range of colour options for personalisation. Archers can choose from a variety of colours to match their bow and express their style.

Overall, custom bowstrings provide a range of benefits, including improved stability, durability, accuracy, and personalisation. With their pre-stretching, tight serving, and warranties, custom bowstrings offer a reliable and high-performance option for archers.

Frequently asked questions