Download the article A quick guide to measuring your trampoline from frame to spring
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After a few years of wear and tear, you may need to order replacement parts for your trampoline. However, before you can do that, you’ll need to know how big it is and therefore how to measure it. Luckily, it’s incredibly easy – just measure the widest part of the farthest frame! If you’re not sure where that is (or what to do with rectangular trampolines), keep reading for our ultimate guide to trampolines.
- For circular and square trampolines, measure the frame from one point on the outer metal frame to a point directly across from it on the opposite side.
- Take another measurement perpendicular to the first, then take the average of both measurements.
- For rectangular and oval trampolines, measure the width and length separately. For octagonal trampolines, measure from opposite corner to opposite corner.
Circular frames Measure from one point on the outer metal frame (not the inner jumping surface) to a point directly on the opposite side. Record the distance, then measure again across the trampoline, this time perpendicular to the original line. Take the average of the two measurements.[1]
- Take two measurements, in case the frame is bent or the trampoline is on uneven ground. Trampolines are measured in whole feet or meters (10′ instead of 10′ 5”, 3 m instead of 290 cm).
Square frames Measure along one side of the frame from corner to corner. Measure the other side (always starting at the outermost edge), then take the average of the two sides.[2]
Octagonal frames Measure from one corner of the outer metal frame to the opposite corner (not side to side!). Then remeasure the angles that are perpendicular to your original line.[3]
Take the average of the two measurements to get your trampoline size.- There are 3 angles between each opposite angle and one angle between each perpendicular angle.
Rectangular and oval frames Measure the length (long side) of the outer metal frame, then measure the width (short side) of the frame.[4]
Always start from the furthest edge to ensure you get an accurate reading.- Rectangular and oval trampolines are measured by width and length, so your trampoline size would be approximately 10’x12′ or 3×4 feet.
- For oval trampolines, take a second to determine where the trampoline is longest and widest. Measure a few times to make sure they are correct.
Look for spare parts that match the dimensions of the frame. Most spare parts for trampolines require frame measurements. If you have a 10’x12′ (3×4 meter) rectangular frame or a 10′ circular frame, look for parts that match that measurement.
Measure the frame of the trampoline. Starting at the outer edge of the metal frame, measure the distance from side to side, then measure again, this time starting perpendicular to your last measurement. Take the average of your measurements.[5]
- For rectangular and oval frames, measure the length and width, but do not take the average.
- For octagonal frames, measure from the corners, not the sides.
- Trampoline mats are sold by frame size, not mat size.
Count the V-rings. V-rings are the triangular rings in your mat that the springs clip into. Go around your trampoline and count how many you have.[6]
If you don’t have a mat, count the number of spring holes in the metal frame.Measure the spring that is not connected to the base. Unhook the spring from the trampoline frame and mat and measure it from end to end of the hook.[7]
Make sure that the spring is completely unstretched and not deformed. If you think your spring is bent in any way, measure a few of them.Use measurements to find replacement parts. Replacement trampoline mats and safety pads are sold by frame size, number of v-rings and spring size. So, if you have a 12′ (4 m) trampoline with 50 V-rings and 5 inch (12 cm) springs, look for mats or pads with these specifications.
Determine what type of posts your case uses if you already have one. There are 5 types of case columns: straight columns (which are completely straight), straight curved columns (straight then curved at the top), arched columns (which look like upside down U-shaped columns), curved columns (which are completely curved), and the upper ring casings (a large ring supported by columns).[8]
- Straight poles come in two varieties, one that holds the net with a screw and the other that pierces the net with a ring or handle.
Measure the frame of your trampoline. Run the tape measure from edge to edge of your metal frame, straight across. Take your measurements again, this time perpendicular to where you first started. Take the average of the two measurements to determine the frame size.[9]
- For rectangular and oval frames, measure the widest and longest part of the trampoline. For octagonal frames, measure from one corner to the corner on the opposite side.
Count the number of security posts or arches in your enclosure. Finally, count how many poles or arches your trampoline has.[10]
If you’re shopping for a new safety net, find one that matches your pole style, frame size, and number of poles you have.Buy replacement nets to match the style of your posts. For example, if you have a top ring enclosure on a 12′ round frame with 6 flat posts, look for products that say “top ring enclosure mesh for 6 flat posts 12” round frames.
Buy a grid and post enclosure if you don’t already have one. If your trampoline’s legs are completely straight and flush with the edge of the frame, buy an enclosure with the same number of posts as the legs on your trampoline to match its size and shape. If not, buy a universal case that fits your frame.
- Check with your manufacturer what types of enclosures you can use with your trampoline.
Determine the shape of the pole and measure its length. Remove one column and compare it to the possible column styles for the case: straight columns, straight curved columns (which are curved only at the top), curved columns, or arches (which look like an upside-down U).[11]
Measure the pole from end to end.- If your case has a ring that extends around the top of it, it’s called a “top ring” case.
- If you have a straight curved post, measure the straight and curved part separately. Some poles are sold based on total length, but some are sold based on the length of each section.
Measure the circumference of the posts and sockets. Measure the circumference somewhere along the pole, then measure again where the pole enters the socket. Some posts are smaller at the base to fit into the socket.[12]
Buy replacement poles based on their shapes, lengths and girths. Find a replacement pole that fits your case by looking for ones with the same measurements. If you have a tapered end, make sure your replacement does too.
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Source: HIS Education