When the sum of the downward ball speed and the upward spin speed are equal but opposite directions, vc will be zero. Some restrictions apply. Movie Screen 11 The only circumstance where you would see a rising ball with backspin is if your opponent slices the ball and you hit a volley. 4 comments. Figure 2 Relative path diagram for incident falling topspin, rising surface. That means that the spin reversed direction during contact. I demoed both Whiteout & Blackout XTDs last month, and am now part of the current Blackout XTD playtest. Tennis News & Discussion. It is free (except for shipping), fast and super easy. Notice that the ball still bounces downward even though the surface is moving upward and the spin has reversed direction. Press J to jump to the feed. But we are often surprised by our actual results. 2. The friction force acts upward, resulting in spin reversal and a substantial topspin exit. *Price comparisons are based on the Manufacturer's Suggested Retail Price ("MSRP") or Original Selling Price. merchant website to ensure validity before making a purchase. Ongoing. RacquetGuys - The RacquetGuys Online Demo Program allows you to test up to three rackets for up to 5 days at a cost of $15 per demo. For a better experience, please enable JavaScript in your browser before proceeding. Delivery takes 2-3 days to most areas. New. Actual sales may not have occurred at this price. ), Movie Screen 4 A ball incident at an oblique angle with no spin will bounce in the same direction with topspin. Receive a $25 rebate that can be applied to 1st new racquet purchase of $149+. The relative motion is determined by the ball's incident spin, speed and angle and the swing speed, angle, and tilt of the racquet. The specs on those Speeds are all over the place. The net speed, in this bounce, is to the right, so friction slows the ball, increases the bounce angle, and increases the topspin. Plus, with our no-risk program, shipping is refunded when you decide to buy a new racket within 3 weeks after demoing. With that, we strongly encourage doubling the effort by disinfecting the handle a second time prior to personal use. In this case, the tilt was enough to make the relative incident path downward across the racquet face, in spite of the incident ball's ascending trajectory. *Price comparisons are based on the Manufacturer's Suggested Retail Price ("MSRP") or Original Selling Price. 90-Day Returns. (Note: Use "double-arrow" movie controls for frame-by-frame play. The best they can do is match manufacturers quoted unstrung weight and balance. Review our privacy policy by clicking herehere. The Speed stock strung specs are 326g with a 6hl balance. Why Is String Stiffness So Important To Power? Movie Screen 14 Adding the paths of the racquet and ball together to get the relative ball path to the racquet, we see that the incident upward speed is quite high and at a substantial angle to the racquet face (which increases that angle by tilting slightly backward). To return to Tennis-Point you may drop off at any UPS store or follow instructions on return label for alternate drop-off options. Example: Receive them on Monday, keep them until the next Monday. (Note: Use "double-arrow" movie controls for frame-by-frame play.). Program Details: Cost: Demo cost is $30 for up to 3 racquets. **There are no additional fees when you return the racquets, assuming you've returned them on time. This is a DEMO racket Test it for 7 days, then return it ** Price is a deposit only ** Quantity: Add to Cart. If I did not receive an email, am I to assume the frame(s) I demoed are not part of the offer? Once you have decided on a new racquet, you can use the demo discount code attached to your order to get $25 off your brand new racquet over $149. If you receive them on a Monday then you have to ship them back to us the following Monday. r/tennis. Yonex EZONE 98 Racquets: http://www.tennis-warehouse.com/descpage-305YEZ.html Yonex EZONE 100 Racquets: http://www.tennis-warehouse.com/descpage-YE100.html . Racquets . Actual sales may not have occurred at this price. Most unused products can be returned within 365 days of purchase for a full refund. He will probably want something with a deep throat though. Altering these will change the contact velocity of the ball relative to the strings. English Franais Deutsch Italiano Espaol. The shot path was downward to the observer's point of view, but still greater than the perpendicular to the racquet face. If you're more than 7 days late and we are unable to reach you, we will charge your credit card for the full price of the racquets, minus whats already been accrued in late fees. Subscribe to the email list to get early access to sales and notifications of new products and specials. It may not display this or other websites correctly. For more about this website, and its current promotions connect with them on Twitter @TennisWarehouse, Facebook, Pinterest or Instagram. The net effect of all these variables can lead to results that are counter-intuitive or contrary to conventional wisdom or rules of thumb. English If you are more than 7 days late, we will keep the deposit and invoice you the full retail price of the rackets. Movie Screen 10 It is somewhat shocking to see a rebound with no spin. Technologies: XEva: Sandwich construction of the core with 3 different EVA layers adapted to each racquet. We do NOT accept Gift Cards, PayPal or Amazon Pay as payment for demo orders. The first five videos are simply examples of basic bounces off a secured, stationary segment of court surface. Now it is easier visualize what the bounce will look like and why. From the videos below it is easy to see the direction of vc due to the rebound angle and resulting spin. We ship demo rackets to following countries: France, Germany, Austria, Italy, Netherlands, Denmark, Hungary, Croatia, Estonia, Romania, Lithuania, Latvia, Slovenia, Czech Republic, Finland, Sweden, Luxembourg, Poland and Spain (not Canary Islands). If the racquets are shipped back late, you will be charged $2.00 per racquet, per day that it is late. If you dont get all the racquets youd like the first time, submit a new order once the previous order is returned! As one of the top online tennis stores with a tennis warehouse of 40,000 sq. Orders over $50 will ship for free! (Note: Use "double-arrow" movie controls for frame-by-frame play.). The demo I received was 336g with a balance of 3. (Note: Use "double-arrow" movie controls for frame-by-frame play.). Once the demos ship, you'll receive them via UPS within two business days. If one of your demo racquets is not in stock, all other racquets in your order will wait to ship out . Simply place the return label over the demo boxs existing label and ship it back to Tennis Warehouse Europe. No P.O. We ship anywhere in the continental U.S. for the same price (racquets must ship to the billing address on the credit card. Beam: 38mm. Enter your zip code while you're adding demos to your shopping cart to see your shipping charges, ranging from as little as $15.00 up to a maximum of $25.00, depending on location. Our demo racquets are strung with manufacturer recommended string. So I have been thinking about demoing the aero and blade racquets, and I'm assuming the discount applies. First let me say, that TW has a great demo program. As a result, there is no relative horizontal motion of the ball and the surface when the ball strikes the surface, which means that the ball does not slide across the surface during the bounce. Now there is no relative motion between the surfaces and friction will decrease to near zero. The company carries full lines of tennis equipment, accessories, shoes, and apparel for men, women, and children. Rod Cross, University of Sydney, Sydney, Australia, Energy Flow and Return Between a Tennis Ball and Stringbed, Free-standing vs Hand-held Racquet Testing. The result depends on the net sum of all incident ball speed, angle, and spin and racquet speed, angle, and tilt. Tennis Warehouse is the 'go-to' company for product reviews, demo programs, expert stringing . Select 1 - 3 demo racquets from the brands above. Our local Houston customers may take advantage of our online demo service or swing by our store to demo up to four racquets for 3 days for $5 each or a week for $10 each. Different sunscreen options with various SPF levels are effective at preventing sunburns. We normally expect topspin from a racquet that is swinging upward, tilted forward or both. Send them back to us using the pre-paid shipping label provided. These will give us a contextual baseline for when we graduate to more complicated bounces off moving surfaces and swinging racquets. Fast and simple. Boxes.) We ship anywhere in the continental U.S. for the same price (racquets must ship to the billing address on the credit card. Demo & save! Thread starter fernandogonzolezbeast; Start date Jan 13, 2010; F . . Prospectus will be available for download 1 week before the date of enrolment.Competition Schedule will be available for download 1 week before the commencement data of competition.Result will be available for download 10 working days upon the completion of the competition.Record of Best Results of District Age Group Athletic Meet and District Age Group Swimming Competition will be available for download 10 working days upon the completion of the competition. . You are using an out of date browser. Click "Mailing List" in the header menu to sign up. Core Composition: XEva. TORONTO DOMINION BANK. And they burned through a lot of racquets. In order to be eligible for a full refund, items must be returned in brand new and resell-able condition. The resultant upward friction was enough to just barely reverse the spin direction. not to complain toooooo much, but the last 2 times I have ordered demos from TW or anywhere, they came in. I just wish they would do a better job of ensuring the demo racquets are somewhat close to spec. With each coupon or promo code thats used, a donation will be made to charity. It may not display this or other websites correctly. Some videos have moving bounce surfaces and others are stationary, and some surfaces are moving vertically as in a tennis stroke and others are horizontal as in a bounce off a court. We offer 100% Price Protection for 7 days on all orders. Use this promo code from Tennis Warehouse to receive 25% off on your shopping cart. It takes two days from the day we ship the demos for the racquets to reach you. You will receive an e-mail the minute they are shipped with a tracking number. Mark also noted the simplicity of power generation. Video 7 shows the surface moving left to right while the ball is incident left to right at the same horizontal speed. There are also expedited shipping services available at a discounted price. Wish Lists. Relative Motion The bounce of a ball off the court surface is easily explained since the court remains at rest. JavaScript is disabled. If youre looking for some tennis memorabilia, you can order autographed shirts, hats, and shoes. If one of your demo racquets is not in stock, all other racquets in your order will wait to ship out until the final racquet arrives in our store). ), Movie Screen 7 A ball incident left to right without spin onto suface moving in same direction at same speed bounces left to right with no spin. As a matter of convention, a ball has topspin if the rotational motion at the top of the ball is in the same direction as the linear direction of the center of the ball. 1. Click "Specials" in the left-side menu of the website to find current seasonal sales and specials with discounts around 30% off regular price.