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A ZipString is an incredible device that rapidly propels, a loop of string. When the strings momentum is balanced within the forces of gravity, lift, and drag, the string actually flies.
The momentum of the string is derived from its speed and its mass. Optimal strings are moving fast, and the string is made light.
In a ZipString, the string is moving at about 35 miles or 65 Kilometers per hour. And the string is made from very light fibers.
Another important feature is the fact that the string in the ZipString isn’t smooth. This is critical to help the string fly. When we look closely, we can see that the string has lots of small filaments that radiate outward. As these filaments move through the air, they create drag. So much so in fact, when you put your hand near the string, you can feel the air movement.
Technically, the string is always under tension. Since the string is a loop, as the string is propelled out of the device, it eventually has to return. As the string begins its return, gravity pulls it downward, but because of the speed of the string, and the drag from the filaments around the string, it creates lift. This lift is mostly pronounced at the distal end, the end farthest from the device. When there’s more lift than the actual weight of the string, the string begins to fly. Another interesting observation is that because of the opposing forces of gravity and lift on the loop of string, the string always orients itself vertically.
So the key to ZipString is moving a light fuzzy string through the air fast enough that it creates enough lift to overcome its weight. When that happens the string is flying.
Shipping Rates
Standard shipping rates to destinations in the continental USA are as follows:
$0 - $25 $7.99
$25 - $50 $9.99
$50 - $100 $12.99
$100 + FREE*
*Your order sub-total must equal $100+ after any discounts and before tax is applied to receive FREE Shipping.
Oversize or additional shipping charges may apply to some items due to their size and weight, regardless of the purchase amount. The product page will denote if an item is excluded from the free shipping promotion. Customers will be advised shipping costs for orders going outside the continental USA for customer approval.
Shipping Methods
STANDARD SERVICE: All items ship from our Southampton, NY location within 1-2 business days. Orders with Standard service will be shipped via USPS First Class, USPS Priority Mail, UPS Ground, UPS Surepost, or FedEx Home Delivery.
EXPEDITED SERVICE: Please call us for a quote if you wish to have your items shipped using an expedited shipping service such as UPS Two Day or Next Day..
Estimated Delivery Times
We will provide an ESTIMATED delivery timeframe at checkout based on the items in your order and your location. Some orders may arrive in multiple shipments.
Delivery timeframes are not guaranteed by any carrier, so please place time-sensitive orders in advance.
Items Lost or Damaged in Transit
Please contact us by email or calling in the event your shipment is lost or damaged. In the event of visible damage, please keep all packaging material. Stevenson’s will provide tracking numbers for all shipments and is not responsible for items not received that the tracking shows as having been delivered.
PICK-UP
We offer pick-up at both our Southampton store and our East Hampton store. Please indicate at checkout where you would like to pick up your item(s) or call us at 631-283-2111.
International Orders
At this time we are unable to ship international orders.
