FORECAST FOR SELECTED CITIES.>>>THAT WRAPS UP THIS EDITION OF NHK “NEWSLINE.” I’M KEIKO KITAGAWA IN TOKYO. THANKS FOR JOINING US.>>>IN THIS EPISODE OF “SUPREME SKILLS” –>>WOW!>>AMAZING!>>THE TOKYO OLYMPICS ARE LESS THAN 1,000 DAYS AWAY. WE ARE GIVING THEM OUR FULL SUPPORT. ATHLETES AREN’T THE ONLY ONES WHO HAVE TO PREPARE FOR THE BIG EVENT. THE EQUIPMENT THEY USE MUST ALSO BE PERFECTED. THESE ARE CUSTOM MADE PRODUCTS THAT MAXIMIZE ATHLETIC PERFORMANCE. EVERY GOLD MEDAL AND EVERY WORLD RECORD IS SUPPORTED BY ATHLETIC EQUIPMENT. SUPREME SKILLS WANTS TO HELP. THAT’S WHY WE’RE FOCUSING TODAY ON THE DEVELOPMENT OF SPORTS EQUIPMENT. FIRST, WE’LL LOOK AT THE DISCUS THROW. WE’LL FOLLOW A PROMISING YOUNG ATHLETE WHO HAS HER SIGHTS SET ON TOKYO OLYMPICS. THE JAPANESE WERE ONCE STRONG CON TENNERS IN THE DISCUS THROW. IN FACT, THEY WON FOURTH PLACE IN THE HELSINKI GAMES. >>BUT SINCE 1968, JAPANESE ATHLETES HAVEN’T EVEN QUALIFIED MUCH LESS WON A MEDAL. NOW, SKILLED CRAFTS MEN AND RESEARCHERS HAVE STEPPED UP. THEY’RE GIVING IT EVERYTHING THEY’VE GOT.>>YOU LOOK READY TO THROW.>>AND WE HAVE ENLISTED THE HELP OF FORMER OLYMPIC ATHLETES.>>I’M ENVIOUS. I WISH I WERE BACK ON THE FIELD.>>I WISH YOU MADE HURDLES FOR US. >>AND THEN THERE’S ARCHERY.>>I CAN’T PULL IT AT ALL. >>REALLY?>>REALLY?>>HOPES WERE HIGH IN RIO BUT JAPAN LOST OUT WINNING NO MEDALS. A SMALL NEIGHBORHOOD FACTORY HAS STEPPED INTO THE BREACH. MAKE US A WINNING BOW. THE GOAL?>>GOLD, OF COURSE.>>JAPANESE MANUFACTURING EXPERTISE COMES TO THE RESCUE. CAN MADE IN JAPAN WIN OLYMPIC GLORY? SUPREME SKILLS!>>WELCOME. I’M YOUR HOST CHIHARA JUNIOR AND I’M MEISOEJIMA. THE OLYMPICS ARE LESS THAN 1,000 DAYS AWAY. >>THAT’S RIGHT. AND WE ARE GETTING INVOLVED. >>YOU SAID IT. >>WHAT A FINE PROGRAM WE HAVE BECOME.>>THIS TIME, WE’RE FOCUSING ON THE BOW USED IN ARCHERY AND THE DISCUS USED IN THE DISCUS THROW.>>AND THESE CAN ACTUALLY BE USED OLYMPIC COMPETITION. RIGHT?>>THAT’S OUR DREAM. AND TO HELP REALIZE IT, WE HAVE ASKED FORMER OLYMPIANS TO JOIN US.>>DAI TAMESUE KNOWN AS THE SAMURAI HURDLER APPEARED IN THE GAMES. HE KNOW IT IS OLYMPICS WELL. YUKA MUROFUSHI COMPETED IN THE HAMMER THROW IN THE ATHENS OLYMPICS. IN THE DISCUS THROW, SHE WON TEN JAPAN CHAMPIONSHIPS IN A ROW MAKING HER A TOP ATHLETE.>>WE’RE HAVING A DISCUS MADE FOR THIS PROGRAM.>>I NEVER THOUGHT ABOUT THAT BEFORE. I WISH I’D MADE ONE MYSELF.>>WHAT ABOUT SHOES, TAMESUE?>>WELL, I WAS A SHORT DISTANCE HURDLER. THE DISTANCE IS SET AND WE HAVE TO PLACE OUR FEET IN THE SAME PLACE EACH TIME REGARDLESS OF WHICH WAY THE WIND’S BLOWING. SO, I CHOSE MY SHOES ACCORDINGLY. >>STRONG WIND MAKES YOU CHOOSE ONE TYPE OF SHOE OVER ANOTHER?>>YES. >>OH. ARE YOUR SHOES MADE IN JAPAN?>>YEAH, NO.>>OVERSEAS?>>YEAH. I STARTED TO SAY YES BUT — >>OUR TESTER FOR THE NEW DISCUS MADE FOR THIS PROGRAM IS A PROMISING YOUNG ATHLETE. SHE HOPES TO COMPETE IN THE TOKYO OLYMPICS.>>LET’S START BY LOOKING AT JUST HOW FAR THE JAPANESE RECORD FOR DISCUS THROWING IS. LOOK OVER THERE. YOU CAN SEE SOMEONE HOLDING A RED FLAG. THAT SPOT MARKS 58.62 METERS. THAT RECORD IS HELD BY MUROFUSHI-SAN HERE WITH US TODAY. >>THE RECORD STILL HOLDS?>>YES. >>AMAZING. WHAT AN HONOR. HAVE YOU MET BEFORE?>>YES, ONCE.>>WE’VE NEVER COMPETED TOGETHER. I’VE BEEN WATCHING HER WONDERFUL THROWING TECHNIQUE, THOUGH. SHE’S GOT A LOT OF SPEED IN HER THROW SO I’M SURE SHE’LL DO REALLY WELL.>>KORI CAUGHT MUROFUSHI’S ADMIRING EYE. SHE IS CURRENTLY JAPAN’S TOP FEMALE DISCUS THROWER. >>YOU HAVE HIGH HOPES?>>THE TOKYO OLYMPICS. >>TO COMPETE? BUT NO JAPANESE HAS COMPETED IN THE DISCUS THROW SINCE THE 1964 GAMES.>>DOES THAT HAVE TO DO WITH HOW JAPANESE BODIES ARE SHAPED? WHAT DO YOU THINK?>>YES. AND ALSO, A PROBLEM OF TECHNIQUE. BUT CERTAINLY, PHYSICAL STRENGTH IS AN ISSUE.>>DO YOU THINK THE JAPANESE ARE AT A DISADVANTAGE?>>THE AVERAGE HEIGHT IS 187 CENTIMETERS. >>I’M 181. THAT’S MUCH TALLER THAN ME. >>YES.>>LIKE YOUR BROTHER.>>YES. I WAS ONLY 170. MY DAD RECENTLY SAID THAT I’D CHOSEN A SPORT I WAS LEAST SUITED FOR. NOW HE TELLS ME.>>THIS IS THE TYPE OF DISCUS YOU USUALLY USE, RIGHT, KORI-SAN?>>SPRES IF I CASES FOR THE DISCUS ARE VERY PRECISE. MANUFACTURERS AROUND THE WORLD COMPETE FIERCELY WITHIN THESE PERMITTED RANGES.>>WHAT’S THIS?>>I ACTUALLY USED THIS ONE. IT HAS JAPAN WRITTEN ON IT. >>YOUR OWN DISCUS?>>I CAN FEEL KORI HOLDING IT. >>I USED IT IN INTERNATIONAL COMPETITIONS. ACTUALLY, ONCE A DISK IS INSPECTED IT CAN BE USED BY ANYONE. >>I SEE.>>DISCUS IS MADE OVER SEAS BREAK EASILY. THEY TEND TO FALL APART. JAPANESE MADE ONES ARE HIGHLY PRIZED BECAUSE THEY’RE DURABLE AND EASY TO THROW. LOTS OF OTHER ATHLETES USED MINE, EVEN WHEN I WANTED THE USE IT MYSELF. >>REALLY? ♪♪>>WILL KORI USE A SUPREME SKILLS DISCUS IN THE TOKYO OLYMPIC GAMES? OUR PROJECT BEGINS. THE DEVELOPMENT TEAM IS LED BY PROFESSOR KAZUYA SEO OF YAMAGATA UNIVERSITY. SEO SPECIALIZES IN SPORTS ENGINEERING. HE’S DEVELOPED VARIOUS TYPES OF EQUIPMENT INCLUDING BICYCLES FOR THE PARALYMPICS AND SKI JUMP EQUIPMENT. NOW, HE’S FOCUSING ON DEVELOPING A DISCUS THAT WILL MAXIMIZE KORI’S POWER. THE FIRST STEP IS TO WATCH AN ACTUAL DISCUS THROW.>>I THOUGHT THE DISCUS WAS SURPRISINGLY STEADY WHEN SHE RELEASED IT BUT IT DID WOBBLE A LITTLE. SEO NOTED THE WAY THE DISCUS WOBBLED DURING THE FLIGHT. IT DOES SHAKE A LITTLE LEFT AND RIGHT AS IT FLIES. THE WOBBLE CAUSES AIR RESISTANCE. IF THE DISCUS COULD BE MADE TO FLY MORE SMOOTHLY IT SHOULD BE POSSIBLE TO THROW IT FURTHER. THE TOWN OF NAKAYAMA IS IN YAMAGATA PREFECTURE. SEO HEADS TO A CERTAIN AUTO FABRICATION SHOP. HE ASKS HIS LONG TIME FRIEND HIDEO SAITO TO MAKE A DISCUS FOR HIM. THOUGH SMALL, THE FABRICATION SHOP IS FAMOUS THROUGHOUT JAPAN. THAT’S BECAUSE HE HOLDS AN IMPRESSIVE PERFORMANCE RECORD IN NATION ALECK COE CAR CHAMPIONSHIPS.>>THIS WAS SPECIFICALLY DESIGNED FOR A COMPETITION TO SEE HOW FAR YOU CAN GO ON ONE LITER OF FUEL.>>HOW FAR?>>ABOUT 1,800 KILOMETERS.>>1,800 PER LITER. >>A LITER?>>YES.>>SAITO MAKES ALL OF HIS CARS BY HAND. SEO WANTS TO USE SAITO’S AMAZING TECHNICAL SKILLS. OF COURSE, SAITO’S NEVER MADE A DISCUS BEFORE. HE STARTS BY TAKING ONE APART. A DISCUS CONSISTS OF A BODY, FITTINGS AND AN OUTER RING MADE OF METAL. THE BALANCE BETWEEN THE OUTER RING AND THE BODY IS KEY.>>SAITO FOCUSES ON THE BALANCE OF WEIGHT BETWEEN OUTER RING AND THE BODY. TOPS CAN BE USED TO ILLUSTRATE. ONE TOP HAS A HEAVIER OUTER RING. BOTH ARE SPUN AT THE SAME TIME. THE ORDINARY TOP WOBBLES AND FALLS RIGHT AWAY. BUT THE WEIGHTED ONE KEEPS SPINNING STABLY FOR A LONG TIME. SAITO WILL APPLY THIS PRINCIPLE.>>I’D LIKE TO MAKE THE OUTER RING ABOUT 80% OF THE TOTAL WEIGHT.>>THE RING ON THE DISCUS KORI USES WEIGHS 750 GRAMS. THEY’LL INCREASE THAT WEIGHT BY 40 GRAMS. THE TOTAL WEIGHT OF THE DISCUS HAS TO BE 1 KILOGRAM. IF THE OUTER RING IS MADE HEAVIER, WEIGHT WILL HAVE TO BE REDUCED ELSEWHERE.>>WHAT PART CAN BE MADE LIGHTER? SAITO FOCUSES ON THE SECOND HEAVIEST COMPONENT. THE BODY. HE DECIDES TO USE CARBON FIBER, A MATERIAL THAT’S BOTH STRONG AND LIGHT.>>I’LL OFFSET IT 45 DEGREES. >>HE GLUES SHEETS OF CARBON FIBER TOGETHER WITH RESIN. AFTER EACH ADDITION, HE CAREFULLY ROLLS OUT THE SURFACE. WHY?>>THERE ARE AIR BUBBLES IN THE RESIN. THIS IS HOW I GET THEM OUT. OTHERWISE, THE BUBBLES WOULD COMPROMISE STRENGTH. THE DENSER THE MATERIAL, THE STRONGER IT IS.>>SAITO USES EIGHT SHEETS OF CARBON FIBER. HE CAREFULLY ROLLS OUT THE AIR BUBBLES ON EACH SHEET. AFTER DRYING OVERNIGHT, THE PROTOTYPE BODY IS FINISHED. IT’S DEFINITELY LIGHTER.>>THE NEXT TASK IS MACHINING THE ALL-IMPORTANT OUTER RING. FOR THAT, SAITO VISITS A NEARBY WORKSHOP. TOKAIRIN SEISAKUSHO HAS WORKED WITH HIM FOR YEARS. >>WE HAVE ALL THE LATEST EQUIPMENT. THAT’S THE DYE CUTTER. WE CAN DRILL A HOLE JUST A TEBT OF A MILLIMETER IN DIAMETER. WE HAVE CUTTING EDGE EQUIPMENT. >>HE STARTS WORK ON THE RING USING THE BELOVED MACHINES. CUTTING LITTLE METAL AT A TIME, HE SLOWLY AND CAREFULLY APPROACHES THE WEIGHT SEO SPECIFIED.>>IT’S DONE.>>ACHIEVING THE PRECISE WEIGHT IS EASY AS PIE. BUT WEIGHT ISN’T THE ONLY CONCERN. THERE’S ANOTHER INNOVATION HIDDEN HERE. HOW’S THIS RING DIFFERENT FROM A CON ESSENTIALAL ONE? LET’S COMPARE THE CONTOUR OF A CONVENTIONAL RING WITH THE CUTTING BLADE.>>SEE? A GAP. >>THE NEW RING IS JUST A LITTLE THICKER. SUPPOSEDLY THIS CHANGE WILL MAKE THE DISCUS FLY FURTHER. SEO CHOSE THIS DESIGN. WHAT SHAPE WILL MAXIMIZE FLIGHT DISTANCE? USING THE LATEST TECHNOLOGY, HE’S SEEKING THE IDEAL CONTOUR.>>THE CALCULATIONS RESULTED IN A DISCUS THAT’S JUST 1 MILLIMETER THICKER. THE RADIUS OF THE EDGE IS ALSO LARGER BY 0.15 MILLIMETERS.>>SEO SAYS THE DIFFERENCE IN THICKNESS IS SMALL BUT IMPORTANT. BUT HOW DID HE COME UP WITH A DESIGN? HE FOCUSED ON THE ANGLE OF THE DISCUS DURING FLY. TOWARD THE END OF THE FLIGHT, THE ANGLE ALWAYS INCREASES. THIS INCREASES AIR RESISTANCE WHICH SLOWS FLIGHT SPEED AND MAKES THE DISCUS FALL LIKE A STONE. THAT’S WHERE THE SECRET PLAN KICKS IN. WHAT DOES THE EXTRA THICKNESS DO? HE CONDUCTS CHECKS TO TEST AIR FLOW. THE INCREASED ANGLE OF A CONVENTIONAL DISCUS DISRUPTS AIR FLOW. BUT LOOK AT SEO’S DISCUS. THE AIR FLOWS SMOOTHLY AROUND IT. THIS WILL HELP REDUCE THE LOSS OF SPEED LATE IN THE FLIGHT. S AITO TAKES THE FINISHED PROTOTYPE TO KORI.>>HELLO.>>THEY’LL ASK HER TO TRY IT OUT.>>WOW. AMAZING. LOOKS GREAT.>>HELLO. WE JUST FINISHED IT LAST NIGHT.>>IT FEELS GOOD. I CAN THROW THIS. I’LL TRY IT.>>ACTUALLY, THIS PROJECT IS A BIG TURNING POINT FOR KORI, TOO. IN HER CAREER AS A HIGH SCHOOL ATHLETE, SHE CONSISTENTLY WON DOMESTIC CHAMPIONSHIPS HELD IN JAPAN. BUT SINCE ENTERING COLLEGE, SHE’S FAILED TO MAKE THE CUT IN INTERNATIONAL CHAMPIONSHIPS. SHE SAYS SHE FEELS A BARRIER WHEN IT COMES TO COMPETING ON A GLOBAL LEVEL.>>IN JAPAN, I OFTEN MADE IT TO THE FINAL ROUNDS EVEN IF I HAD SOME BAD THROWS. BUT THAT KIND OF PERFORMANCE JUST ISN’T GOOD ENOUGH FOR INTERNATIONAL COMPETITION. IT’S FRUSTRATING.>>JAPANESE DISCUS.>>HERE GOES!>>CAN IT BE REVIVED AFTER SO MANY YEARS?>>WELL, THAT IS NO ORDINARY DISCUS.>>IT CERTAINLY WOBBLES LESS THAN BEFORE. BUT DOES IT FLY FARTHER AS SEO HOPES?>>THAT WAS A GOOD THROW. AND IT FEELS LIKE I COULD GO EVEN FARTHER.>>I WATCH HER EVERY DAY AND IT DID SEEM TO STAY UP LONGER.>>IT FLIES BETTER?>>YEAH. TAKES LONGER TO FALL.>>IT FEELS GOOD. BUT THEN –>>THE SURFACE IS VERY SMOOTH. IT’D BE NICE IF IT HAD MORE TEXTURE. MY OLD ONES ARE REALLY RUSTY. GIVEN A CHOICE I’D RATHER THROW A WELL-USED DISCUS THAN A NEW ONE. >>A RUSTY DISCUS IS BETTER THAN A NEW ONE? SO IS THE NEW ONE REJECTED?>>KORI-SAN, WHAT WAS IT LIKE TO THROW IT?>>IT WAS EASY TO THROW. >>SO THE DESIGN IS GOOD, HUH? WITH THE THICKER EDGE.>>THE SHARPER EDGE IS OLD STYLE. IT’S EDGY LIKE JUNIOR-SAN WAS IN THE OLD DAYS. MORE ANGULAR. BUT THE NEW ONE IS MORE GENTLE. MORE LIKE JUNIOR-SAN IS NOW. IT GLIDES MORE SMOOTHLY THROUGH THE AIR AND TECHNICAL TERMS FLOW SEPARATION DOESN’T OCCUR. SO THE DISCUS MAINTAINS ITS LIFT ALL THE WAY TO THE END OF THE FLIGHT.>>BUT IT’S HARD TO GRIP. IS THAT IT?>>THAT’S RIGHT.>>NOW CAN WE ASK MUROFUSHI-SAN TO EXPLAIN HOW A DISCUS IS THROWN?>>THE RELEASE IS DONE WITH THE SNAP OF THE WRIST. INSTEAD OF SPINNING IT THIS WAY, YOU USE YOUR FINGERS TO SPIN IT OUTWARD. >>THE OPPOSITE DIRECTION. >>IT’S RELEASED LIKE THIS.>>SO THAT’S WHY YOU SAID THAT YOU COULDN’T GET A PROPER GRIP ON IT.>>IF IT’S RUSTY, MY FINGERS DON’T SLIP LIKE THEY DO WITH A NEW DISCUS. WHEN THEY SLIP, IT’S HARDER TO THROW.>>DO THE RULES ALLOW A RUSTY DISCUS?>>AS LONG AS IT DOESN’T AFFECT THE WEIGHT. JUST A LITTLE SIDE STORY. I WAS IN A COMPETITION ONCE WHERE ALL THE DISCUSS AVAILABLE WERE BRAND NEW. SO EVERYONE WENT LOOKING FOR A SAND PIT WHERE THEY COULD SCRUB THE SURFACE OF THEIR DISCUS WITH SAND TO ROUGHEN IT UP. >>TRACK AND FIELD EVENTS ABOUT MUSCLE THROUGH FRICTION. FOR RUNNERS, THAT MEANS MAKING SURE OUR FEET DON’T SLIP ON THE GROUND. FOR DISCUS THROWERS IT MEANS USING RUST SO THE FINGERS DON’T SLIP AND APPLY THE FULL SPEED. >>I SEE. >>ATHLETES ARE OBSESSED WITH FRICTION. >>WHAT DID YOU THINK WHEN SHE ASKED YOU TO MAKE IT RUSTY?>>WE TRIED TO MAKE BEAUTIFUL THINGS. THAT’S WHAT WE HAVE ALWAYS DONE SO WHEN SHE SAID TO MAKE IT RUSTY, TO MAKE IT ROUGH, THIS’S THE OPPOSITE OF WHAT WE USUALLY DO. AT THE SAME TIME, WE WANTED TO DO EVERYTHING WE CAN TO SATISFY KORI-SAN. DOWN TO THE SMALLEST DETAIL. WE’RE COMMITTED TO DOING THE BEST JOB WE CAN.>>SO THE MISSION BECOMES RECREATE THE EFFECT OF RUST.>>HE ACCEPTS THIS DIFFICULT CHALLENGE. SHINJI SAITO. AFTER GRADUATING FROM COLLEGE, SHINJI JOINED A COMPANY IN TOKYO. BUT TWO YEARS AGO, HE LEFT THAT COMPANY AND RETURNED TO YAMAGATA. SAITO HOPES HIS SON WILL CARRY ON THE BUSINESS. HE GAVE THE JOB TO SHINJI THINKING IT WOULD EXPAND HIS TECHNICAL EXPERIENCE.>>I WANT TO EXPOSE HIM TO VARIOUS POSSIBILITIES AND CHALLENGES. IT’S GOOD FOR ME, TOO. I FEEL THAT’S IMPORTANT.>>SHINJI FEELS THE PRESSURE OF HIS FATHER’S HIGH EXPECTATIONS. HE DECIDES TO TRY A SPECIAL TECHNIQUE NOT USED IN THE AUTOMOTIVE INDUSTRY. HE TAKES OUT A SPRAYER USED TO PAINT CARS. HE STARTS PAINTING FROM A SLIGHTLY GREATER DISTANCE THAN USUAL. CAN HE CREATE A RUST-LIKE SURFACE?>>INSTEAD OF PAINTING IT THE USUAL WAY I THOUGHT THIS MIGHT GIVE IT THE TEXTURE THAT KORI-SAN WANTS.>>WHEN IT DRIES — LOOK! IT’S GOT A ROUGH TEXTURE. BUT HOW DID HE DO IT? NORMALLY CARS ARE SPRAY PAINTED WITH A LOT OF POWER FROM A CLOSE DISTANCE. THAT MAKES THE SURFACE SMOOTH. BUT THIS TIME, SHINJI SPRAYED LARGE DROPLETS FROM A GREATER DISTANCE. THE DROPLETS DRY IN MIDAIR AND KEEP THE GRANULAR SHAPE ON THE SURFACE. LOOK HOW IT COMPARES WITH ACTUAL RUST. SEE? VIRTUALLY THE SAME. THIS SHOULD PROVIDE PLENTY OF FRICTION FOR KORI’S FINGERS. SHINJI’S DONE HIS PART. NOW IT’S HIS FATHER’S TURN. SAITO RECONSIDERS THE WEIGHT BALANCE. THIS TIME HE LOOKS AT THE METAL FITTINGS. HE WANTS TO MAKE THEM LIGHTER BY USING A DIFFERENT MATERIAL. THE CURRENT STAINLESS STEEL FITTINGS WEIGH 14 GRAMS.>>IF I USE TWO TITANIUM BOLTS, 5 GRAMS. THESE WILL HELP ME MINIMIZE THE WEIGHT.>>NEXT, THE BODY. TO MAKE IT LIGHTER, HE PUTS IT ON A CRASH DIET. THAT WAY HE CAN MAKE THE OUTER RING EVEN HEAVIER WHICH WILL FURTHER STABILIZE ROTATION. THIS TIME, SAITO PUTS THE NEWLY GLUED BODY INSIDE A PLASTIC BAG AND FOR SOME REASON REMOVES THE AIR?>>THIS DRAWS OUT EXCESS RESIN. IT WILL CUT THE WEIGHT BY ABOUT 20 GRAMS.>>BY DRAWING OUT THE EXCESS RESIN, SAITO MAKES THE BODY AS LIGHT AS HE POSSIBLY CAN. THREE HOURS LATER, IT’S DONE.>>GOOD.>>THE FATHER REDUCED THE WEIGHT EVEN FURTHER. WHILE THE SON RECREATED A RUST-LIKE SURFACE. GREAT COOPERATION. SUPREME SKILL!>>YOU TWO REALLY DID A GREAT JOB. YOU DON’T USUALLY DO THAT KIND OF PAINTING, DO YOU, SHINJI-SAN?>>OUR CLIENTS WOULD GET MAD IF I DID. >>BUT SOMEHOW YOU KNEW IT WOULD WORK. >>I USED TO THROW THE DISCUS MYSELF SO I HAVE A FEEL FOR IT. >>REALLY? WHAT A COINCIDENCE. WE WENT TO THE RIGHT PLACE. SO HOW DOES IT FEEL TO MAKE THINGS WITH YOUR FATHER?>>I HAVE ONLY BEEN AT IT FOR TWO YEARS. HE’S BEEN DOING THIS FOR DECADES SO THERE’S NO WAY I CAN MATCH HIM. I’M VERY AWARE OF MY OWN DEFICIENCIES.>>WHAT’S IT LIKE TO WORK WITH YOUR SON?>>I HAVE HIGH EXPECTATIONS FOR HIM. I THINK HE’LL ENJOY TACKLING HARD PROBLEMS AND CHALLENGES.>>I’M SURE YOU’RE RIGHT. LET’S TAKE A LOOK AT THE DISCUS THAT SAITO’S MADE. >>WOW. >>WE’VE ASKED KORI TO CHOOSE THE ONE SHE LIKES BEST. THE OUTER RINGS HAVE DIFFERENT WEIGHTS.>>SHINJI-SAN DID A FINE PAINT JOB. >>IT’S TRUE. IT’S GOT TEXTURE. HOW DID IT FEEL WHEN YOU HELD IT?>>IT FEELS BROKEN IN DESPITE BEING NEW. IT’S GOT A GREAT FEEL.>>WHAT DO YOU THINK?>>HARD TO BELIEVE IT’S NEW.>>LIKE A YO-YO. >>YOU LOOK READY TO THROW. >>IT REALLY GRABS THE FINGERS. >>GREAT FRICTION. HERE’S A HEAVY ONE. >>OKAY. AH, IT DOES FEEL HEAVY. >>HEAVY?>>YES. >>THE TOTAL WEIGHT’S THE SAME.>>YEAH. BUT THIS ONE LETS ME DIG IN WITH MY FINGERS AN USE MY FULL STRENGTH. IT’S SO SOLID. I THINK IT WILL REQUIRE A CHANGE IN THROWING TECHNIQUE.>>THE OUTER RING’S HEAVIER SO THERE’S MORE RESISTANCE. >>EXACTLY. I THINK SHE’LL HAVE TO CHANGE HER BODY MOVEMENT.>>THEY WORK SO HARD JUST FOR YOU. DON’T YOU FEEL LUCKY, KORI-SAN? DON’T LET ANYONE ELSE USE THESE. OKAY. CAN WE PUT THESE TO THE TEST? WHICH WILL YOU THROW, LIGHT OR HEAVIER?>>THE LIGHTER ONE. >>THE LIGHTER ONE IT IS.>>WILL KORI APPROVE THE NEW DISCUS? IT’S TIME TO PUT IT TO THE TEST.>>TO HELP HER MAKE AN ACCURATE COMPARISON, WE’LL RECREATE NEAR CHAMPIONSHIP CONDITIONS.>>BEFORE SHE THROWS THE NEWLY MADE DISCUS SHE’LL THROW THE ONE SHE’S ALWAYS USED. THAT WAY WE CAN COMPARE THEM.>>HERE GOES! DID IT GO PAST THE 40-METER MARK?>>HOW FAR?>>44.92 METERS.>>IT’S NOT THAT GREAT OF A THROW FOR KORI. ACTUALLY, TODAY’S NOT AN IDEAL DAY FOR DISCUS THROWING.>>THERE’S A TAIL WIND TODAY. IT’S DIFFICULT. COMING IN FROM THE SEA.>>A HEAD WIND IS BETTER?>>THAT’S RIGHT. WITH A HEAD WIND YOU GET BETTER LIFT LIKE UNDER A BIRD’S WING.>>WE DO THE WIND WAVES. >>WIND WAVES?>>THAT’S RIGHT.>>JUMPERS DO THAT, TOO.>>NOW SHE’LL THROW THE DISCUS WITH THE 790-GRAM OUTER RING.>>HERE GOES!>>HOW WILL SHE DO?>>HOW’D SHE DO?>>LOOKS GOOD. >>YEAH. HOW FAR?>>47.16 METERS.>>DESPITE THE BAD CONDITIONS, THE SUPREME SKILL DISCUS EXTENDS THE DISTANCE. IT FLIES MORE THAN TWO METERS FARTHER THAN A REGULAR DISCUS.>>KORI-SAN, WHAT DO YOU THINK?>>IF I HAD A PROPER HEAD WIND DURING PRACTICE AND WAS IN GOOD CONDITION, I THINK IT WOULDN’T GO DOWN SO QUICKLY. I THINK THIS DISCUS WOULD STAY UP MUCH LONGER THAN THE OTHERS. EVERYONE WORKED SO HARD TO MAKE THIS SO I WANT TO PRACTICE AND LEARN HOW TO USE THIS DISCUS WELL.>>WHAT DO YOU THINK, COACH?>>I THINK THIS DISCUS WOULD REALLY FLY A LONG WAY IF WE HAD A HEAD WIND.>>BOTH KORI AND HER COACH GIVE IT HIGH MARKS. PROVISIONALLY PROPROVED, WITH FURTHER DEVELOPMENTS AHEAD.>>I FEEL RESPONSIBLE FOR TAILORING THE SHAPE TO HER NEEDS A LITTLE MORE. I WANT TO FIND A BETTER SHAPE TO SUIT HER. I FEEL THAT THIS PROGRAM HAS GIVEN ME THAT ASSIGNMENT.>>I THINK ATHLETES CAN GROW IN RESPONSE TO THEIR EQUIPMENT. AS THEY MASTER A NEW TOOL, ATHLETES GROW IN VARIOUS WAYS. IT’S WONDERFUL IF THE EQUIPMENT AND THE ATHLETE IMPROVE TOGETHER.>>IT’S RARE FOR EQUIPMENT MAKERS AND ATHLETES TO WORK TOGETHER LIKE THIS. I HOPE THAT WHAT WE DID HERE TODAY CAN BE A STARTING POINT FOR FURTHER PROGRESS. >>DOES IT MAKE YOU ENVIOUS?>>YES, I’M ENVIOUS. I WISH I WERE BACK ON THE FIELD.>>BUT WE’RE NOT DONE YET. THE NEXT SPORT SUPREME SKILL WANTS TO SUPPORT IS ARCHERY. IN THE 2012 LONDON OLYMPICS, TAKAHARU FURUKAWA WON THE SILL RER IN THE MEN’S INDIVIDUAL EVENT. THE WOMEN’S TEAM ALSO DID WELL WINNING YEAH PAN’S FIRST MEDAL IN WOMEN’S ARCHERY. BUT IN RIO IN 2016, IT WAS A DIFFERENT STORY. NOT A SINGLE MEDAL. SO DISAPPOINTING. BUT NOW ONE MAN STEPPED UP TO HELP JAPAN. YOSHIHISA NISHIKAWA. NISHIKAWA OPERATES A METAL WORKING FACTORY IN TOKYO. HIS SHOP MANUFACTURES JIGS WHICH ARE USED TO TEMPORARILY HOLD COMPONENTS IN PLACE IN ASSEMBLY OPERATIONS. HIS PRODUCTS ARE THE UNSEEN HEROES OF THE PRODUCTION LINE AND HERE’S ONE OF HIS BEST.>>THIS JIG HOLDS PRINTED CIRCUITS FOR PLAETDING. IT WAS USED TO BUILD THE K COMPUTER. >>WHOA! IT HELPED MAKE ONE OF THE WORLD’S MOST POWERFUL SUPER COMPUTERS. NISHIKAWA’S CONCEPTS AND MANUFACTURING PRECISION ARE HIGHLY RESPECTED. AND NOW WE HAVE ASKED HIM TO FOCUS HIS TECHNICAL SKILLS ON MAKING AN ARCHERY BOW THAT HAS A NEW KIND OF MECHANISM. HIS GOAL?>>I WANT TO MAKE A UNIQUELY JAPANESE BOW SPECIALLY MADE FOR USE BY JAPANESE ATHLETES.>>A BOW FOR JAPANESE ATHLETES? ACTUALLY, ALL BOWS USED IN ARCHERY ARE MADE OVERSEAS. NONE ARE MADE IN JAPAN. CAN JAPANESE TECHNOLOGY HELP WIN MORE MEDALS? WE’LL FIND OUT WITH THE ARCHERY PROJECT ON SUPREME SKILL!>>NO JAPANESE MADE BOWS, HUH?>>THAT’S RIGHT. THAT’S WHY THIS CHALLENGE HAS BEEN ACCEPTED BY NISHIKAWA-SAN AND KURIBAYASHI-SAN. >>HAVE YOU EVER DONE ARCHERY?>>I CAME TO IT LATE BUT YES, I HAVE. >>OH, YOU HAVE?>>JUST A LITTLE. >>AS A HOBBY, HUH?>>I’VE NEVER SEEN A JAPANESE MADE BOW SO I FIGURED SINCE OUR SHOP MANUFACTURES SPECIALTY JIGS I WANTED TO MAKE SOMETHING PEOPLE COULD USE. WE’RE IN THE BUSINESS OF MAKING TOOLS, AFTER ALL. SO THAT DESIRE IS WHAT LED ME TO ACCEPT THIS CHALLENGE. >>THEY SAY IF YOU CATCH A COLD ABROAD TAKE FOREIGN MEDICINE. SO HOME GROWN BOW IS BEST, HUH?>>NISHIKAWA’S BOW WILL BE TESTED BY YUHO MAEDA. HE’S WON JAPAN’S NATIONAL SPORTS FESTIVAL AND HOLDS THE RECORD FOR INDOOR ARCHERY.>>THANKS FOR COMING. SO TELL ME, WHAT MAKES ARCHERY SO INTERESTING?>>GOOD QUESTION. FOR ME, IT’S THE FEELING I GET WHEN I MAKE A GOOD SHOT AND THE ARROW HITS THE BULL’S EYE. IT FEELS GREAT.>>BUT THAT’S THE TARGET THERE. RIGHT? IT’S SO FAR AWAY.>>YES. IT’S 70 METERS. >>SO WHERE WAS YOUR BOW MADE?>>SOUTH KOREA.>>SOUTH KOREA? IS ARCHERY POPULAR THERE?>>AT THE RIO OLYMPICS, ALL FOUR GOLD MEDALS WERE WON BY SOUTH KOREA. >>REALLY? THEN I GUESS THE BOWS THEY MAKE THERE ARE REALLY ADVANCED. SO THIS IS A BIG CHALLENGE FOR YOU, NISHIKAWA-SAN. DO YOU MIND IF I HOLD IT?>>HOLD IT HERE WITH YOUR LEFT HAND AND PULL THE STRING WITH THREE FINGERS. PULL IT TO YOUR CHIN.>>I CAN’T PULL IT. WAIT. I CAN’T PULL IT AT ALL.>>REALLY?>>REALLY. I REALLY TRIED. HERE. YOU DO IT.>>UNBELIEVABLE. HOLD IT WITH YOUR LEFT HAND AND PULL IT TO YOUR CHIN.>>YOU MAKE IT LOOK EASY. OH! SCARY.>>NOW, USE THE SIGHTING DEVICE TO AIM AT THE TARGET 70 METERS AWAY. >>DON’T SHAKE NOW.>>OH.>>MAEDA IS A WORLD CLASS ARCHER. LET’S WATCH HIM SHOOT USING HIS USUAL BOW.>>HERE GOES.>>THERE’S A SLIGHT TAIL WIND. HE TAKES A STANCE. AND SHOOTS.>>NINE POINTS.>>WHAT’S WRONG? WHY AREN’T YOU CHEERING?>>I WANTED TEN POINTS.>>TELL ME, THE BULL’S EYE IS STANDARD?>>YES.>>SO REALLY, PEOPLE COUNT HOW MANY SHOTS ARE NOT TEN?>>AT THE TOP LEVEL, YES.>>THAT’S AMAZING.>>TO PUSH THE LIMITS OF ARCHERY, HE TURNS TO ANOTHER PERSON FOR HELP.>>HELLO. HOW ARE YOU?>>TAKESHI MIYAZAKI TEACHES. >>I WANT TO HELP ANY WAY I CAN.>>HIS SPECIALTY IS FLUID DYNAMICS. HE’S RESEARCHED HOW ARROWS FLY. TO HELP IN THAT RESEARCH, HE BUILT THIS. AN ARCHERY ROBOT. THIS INCREDIBLE MACHINE ALWAYS SHOOTS THE ARROW IN THE SAME WAY. IN THE SPRING OF 2017, EXPERIMENTS CONDUCTED WITH THIS MACHINE CLARIFIED A PROBLEM WITH MODERN-DAY ARCHERY. 30 ARROWS WERE SHOT WITHOUT CHANGING THE MACHINE SETTINGS. ALTHOUGH IT WAS AIMED AT THE CENTER OF THE BULL’S EYE, THE MACHINE MISSED A FEW SHOTS. IT’S NOT HUMAN ERROR. IT’S THE BOW!>>THERE MIGHT BE SOME VIBRATION IN THE JOINTS BETWEEN THE RISER AND THE LIMBS.>>HUH? VIBRATION IN THE RISER JOINTS? ACTUALLY, ARCHERY BOWS ARE COMPRISED OF A CENTRAL RISER OR HANDLE AND TWO LIMBS THAT PROVIDE RECOIL.>>I DIDN’T KNOW.>>HE’S FOCUSED ON THE JOINTS BETWEEN THE TWO. HE SUSPECTS THAT VIBRATION THERE AFFECT IT IS ARROW’S FLIGHT. IF WE OBSERVE THE JOINTS DURING A SHOT, IT’S CLEAR THERE’S SOME LATERAL VIBRATION. THIS SEEMS TO BE CAUSED BY THE WAY THE TWO PARTS ARE JOINED. IN EXISTING BOWS, THE LIMBS ARE INSERTED INTO GROOVES IN THE RISER. THIS LEAVES SMALL GAPS. THAT MIGHT BE A SOURCE OF THE SHAKING.>>THE JOINT PARTS ARE CALLED LIMB POCKETS. THEY’VE BEEN THE NORM FOR MANY YEARS.>>IT’S BEEN THE DOMINANT TRADITION FOR MORE THAN THREE DECADES. BUT NISHIKAWA THINKS HE HAS A BETTER IDEA. THIS MAN IS IN CHARGE OF FABRICATION. >>HERE WE GO.>>HE CUTS A RISER FROM A LARGE INGET OF ALUMINUM. THE PROCESS TAKES A FULL DAY TO COMPLETE.>>IT’S EXCITING. BEAUTIFUL.>>HE’S FINISHED THE ROUGH CUT. IT ALREADY LOOKS LIKE A RISER.>>NOW FOR THE FINAL FINISHING.>>THREE DAYS LATER, THE PROTOTYPE IS FINISHED. BUT WHAT INNOVATIVE DESIGN DID NISHIKAWA INCORPORATE TO STOP THE JOINTS FROM VIBRATING? INSTEAD OF THE TRADITIONAL GROOVE, HE USED A ROUND HOLE. WILL THAT DO THE TRICK? NISHIKAWA INVITES EXPERIENCED ARCHERS TO TAKE A LOOK. THEY HAVE MORE THAN 30 YEARS OF EXPERIENCE AND PARTICIPATED IN NATIONAL CHAMPIONSHIPS. WHAT DO THEY THINK OF NISHIKAWA’S INNOVATION?>>OH. OH? CHECK IT OUT.>>OH.>>THERE’S NO RATTLING. NO GAPS. IT’S SOLID.>>IS THAT USUAL?>>NOT AT ALL.>>NISHIKAWA’S NEW DESIGN USES A ROUND HOLE INSTEAD OF A GROOVE. THE SLANTED SIDES OF THE HOLE ARE CRUCIAL IN REDUCING VIBRATION TO NEARLY ZERO. THE HOLE NARROWS TOWARDS THE BOTTOM. THE LIMB BOLT IS HELD SNUGLY EVEN IF THERE’S MINOR DIMENSIONAL ERROR. THE JOINT BOLT IS ALSO NEW. IT’S FLEXIBLE. CONVENTIONAL BOLTS ARE SIMPLY SCREWED IN AND FIXED VERTICALLY. WHEN THE STRING IS DRAWN THE END OF THE LIMB IS BROUGHT INTO CONTACT AT A SINGLE POINT. BUT WITH NISHIKAWA’S DESIGN THE BOLT TILTS. WHEN THE LIMB AND RISES IT HITS THE WHOLE SURFACE FOR BETTER STABILITY. >>OH. I GET IT. I GET IT.>>IT’S REALLY A GREAT IDEA.>>ARE YOU HAVING FUN?>>NISHIKAWA’S PROTOTYPE IS READY FOR TESTING. WILL HIS DESIGN REDUCE SHAKING, AND IF SO, BY HOW MUCH? A SENSOR IS INSTALLED TO MEASURE VIBRATIONS TOO SMALL TO SEE.>>HERE GOES. >>THREE, TWO, ONE.>>WHOA.>>THE ARROWS ALL LAND IN VIRTUALLY THE SAME SPOT. >>AMAZING. >>WHAT ABOUT THE VIBRATION?>>ALMOST GONE. JUST LOOK HOW IT COMPARES WITH A CONVENTIONAL BOW. THE SENSOR SHOWS THAT VIBRATION WAS CUT BY MORE THAN HALF.>>THAT’S INCREDIBLE.>>YOU DID IT, NISHIKAWA! YOUR NEW IDEAS TOTALLY DEMOLISHED TRADITIONAL BARRIERS. SUPREME SKILL!>>CONGRATULATIONS! NISHIKAWA-SAN?>>YES?>>I’M SURE YOU’RE DOING ARCHERY FOR TEN YEARS AS A HOBBY HELPED. SOMEONE WITHOUT EXPERIENCE WOULDN’T HAVE THOUGHT OF THAT. >>IT REALLY GOES TO SHOW THAT PERSONAL INVESTMENT IN SOMETHING IS GOOD FOR MANUFACTURING. >>NOW WE HAVE TO HOPE THAT OTHER ARCHERS AROUND THE WORLD WON’T SEE THIS PROGRAM. RIGHT?>>FOR SURE. >>YOU REALLY DELIVERED. >>THIS IS A CONVENTIONAL BOW SOLD IN STORES. FEEL IT HERE.>>THIS IS THE JOINT, HUH? I SEE.>>AND THIS IS THE NEW PROTOTYPE. FEEL THE JOINT AREA.>>NO WOBBLING. >>YOU’RE RIGHT. COMPLETELY DIFFERENT. ARE THERE WEIGHT RESTRICTIONS ON BOWS?>>THIS IS STILL THE ROUGH CUT. IT NEEDS FINAL FINISHING.>>I SEE.>>ACTUALLY, THERE ARE OTHER INNOVATIONS IN THIS PROTOTYPE. ONE OF THEM IS RIGHT HERE. TA-DA. >>WHAT?>>THAT IS TRADE SECRET. ISN’T THAT RIGHT?>>YOU MEAN WE CAN’T SHOW IT?>>WE’D REALLY RATHER NOT MAKE IT PUBLIC. >>I SEE. THE SECRET’S HIDDEN IN HERE?>>YES. IT’S A MECHANISM THAT ALLOWS THE ARCHER TO CHANGE THE ARROW’S RELEASE ANGLE. IT’S HIDDEN INSIDE.>>WHAT’S THE ADVANTAGE OF CHANGING THE ANGLE?>>WHEN AN ARROW IS SHOT TOWARD A DISTANT TARGET, IT FLIES ALONG A PARABOLIC LINE. DISTANCE IS INCREASED BY ANGLING THE ARROW UPWARD. THIS MEAN IT IS ARCHER HAS TO RAISE THEIR ARM ON A DIAGONAL BUT THIS INCREASES THE STRAIN ON THE SHOULDERS. WE DID AN EXPERIMENT TO FIND OUT JUST HOW MUCH THE LOAD INCREASES. WE FOUND THAT SHOOTING UPWARDS INCREASES MUSCULAR ACTIVITY BY 10% COMPARED BY A HORIZONTAL SHOT. NISHIKAWA FOUND A SOLUTION BY INVENTING A MECHANISM THAT CHANGES THE ARROW’S RELEASE ANGLE. THAT WAY THE ARCHER CAN PULL THE STRING BACK HORIZONTALLY AND STILL SHOOT UPWARD.>>SUCH A SMALL CHANGE IN ANGLE MAKE A DIFFERENCE?>>WE SHOOT 72 ARROWS IN A MATCH. IT CAN STRAIN THE SHOULDERS.>>SO, NISHIKAWA-SAN, YOU CAME UP WITH A MECHANISM TO SEND THE ARROW UP AT AN ANGLE?>>ALL OTHER BOWS HAVE A FIXED POSITION THAT FORCE THE ARCHERS TO ADAPT BUT WE CAN ADAPT THE BOW TO THE ARCHER INSTEAD. THAT’S A VERY JAPANESE APPROACH TO MATCH AN INDIVIDUAL.>>I SEE.>>THE TIME HAS COME FOR MAEDA TO PUT NISHIKAWA’S FIRST PROTOTYPE TO THE TEST. WILL THE BOW WIN MAEDA’S STAMP OF APPROVAL?>>PLEASE GO AHEAD.>>OKAY.>>HOW WILL IT GO?>>WOW. NINE POINTS. HOW DID IT FEEL?>>PRETTY GOOD. IT’S DIFFERENT FROM A REGULAR BOW AND I’M NOT USED TO IT BUT IT CERTAINLY FEELS VERY STABLE. THE ARROW REALLY SEEMS TO FLY STRAIGHT.>>MAEDA’S TRYING THE PROTOTYPE OUT FOR THE FIRST TIME. MAKING ADJUSTMENTS AFTER HIS FIRST SHOT, HE’LL SHOOT AGAIN.>>YES.>>BULL’S EYE.>>THAT WAS GREAT!>>INCREDIBLE.>>RIGHT IN THE MIDDLE.>>YOU HIT THE BULL’S EYE, MAEDA-SAN. AND ONLY AFTER A FEW HOURS WITH THE NEW BOW. >>IT SHOWS THAT IT HAS A LOT OF POTENTIAL.>>THERE ARE FEWER THAN 1,000 DAYS UNTIL THE OLYMPICS BUT I THINK I SEE A ROUND GOLD LIGHT. >>I’LL KEEP WORKING ON IT. IF THEY CAN KEEP THE STABILITY AND STRAIGHT RELEASE WHILE MAKING THE BOW LIGHTER, WE’LL REALLY HAVE SOMETHING.>>PLEASE LET ME KNOW HOW IT GOES.>>YOU BET.>>ISN’T THIS GREAT, NISHIKAWA-SAN? LOTS OF FUN. >>I JUST HOPE YOUR IDEAS AREN’T STOLEN. THANK YOU.>>I’VE NEVER SEEN ANYTHING LIKE THIS. I CAN’T STOP SMILING. IT’S AMAZING. I WISH I HAD A CAMERA.>>WE’RE FILMING IT. >>OH YEAH, OF COURSE.>>TOKYO OLYMPIANS, WE AT “SUPREME SKILL” ARE WITH YOU. GO FOR IT!>>>HELLO AND WELCOME TO NHK “NEWSLINE.” I’M KEIKO KITAGAWA IN TOKYO.>>>LEADERS IN TAIWAN HAVE UNVEILED A DEFENSE BUILD-UP PLAN AS CHINESE MILITARY JETS BECOME MORE ACTIVE IN THE REGION.

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Dennis Veasley

38 thoughts on “Supreme Skills! Making the Ultimate Athletic Equipment!”

  1. Rather than focusing on enhancing the athlete's ability, it focuses on the tool. I am a big fan of the supreme skill series but this episode upsets me. This is demoralizing at the same time. It is just my opinion.

  2. Another excellent episode! As an American, I have to find good things to watch on the internet. I'm so jealous of this type of programming. Our children miss out!

  3. As a mechanical engineer and a hobbyist machinist, I can almost guarantee that the elevation changing mechanism on that bow is an eccentric bolt

  4. Excellent riser development! Notice they use win&win limbs instead of hoyt for the newly designed riser.

  5. When english speakers try(!) re-create the effect of japanese annoucers "enthusiasm/empathic-style" I always cringe. NHK speakers do this WAY too much. It is sooo ridiculous.

  6. . It's not competing for cash , It's all about making things go foward and learning . I love that show . Love that mentality . Thank you Japan !

  7. Im stoked and at the same time jealous, i wish our country have these kind of support from private and government and even individuals who has the capacity to help, without asking for any return… Keep it up guys… Make your country proud…

  8. If you guys want to excel in Olympics you should throw that stupid Samurai Pride honor shit, Get better Doctors that will make better drugs that won't be detected by test "just like the top countries" if you think gears arent used, we'll not my problem.

  9. The wobble doesnt cause air resistance, it is caused by air resistance being dissipated along the surface as it builds up to critical tilt causing pressure. The velocity dictates the resistance side and the angled sides take turns compressing air on the leading edge of the disk.

  10. 20-30 years and no human will design like they do. Why would you when even now AI can design and test hundreds of millions of designs in time that person needs to design and test couple.

  11. This is interesting though barely watchable because of the awful commentators. In any case, about the discus part: Higher rim mass proportion is nothing new, the textured rim is also nothing new (e.g. Berg's 1980s Supersegler came with a steel rim that had a texture for grip from new) and worse is that that painted on stuff will likely wear off quickly. A sandblasted surface may be too fine but perhaps could work. It depends what is allowed by the rules what would be optimal. Then about the shape, why no results on expected distance increase? (they showed the simulations but no expected difference in distance). Why did that thrower only do 2 throws with 2 discuses to 'show which one will fly further'? That result is meaningless! All throwers have variations of 2m and much more all the time in their throws, so the only good test would have been to try all 3 discuses in a row, 5 or 10 times, to get some indication of improvement. Or 3 throws with each discus, then 3 with the next etc. to get used to each one. Better yet that and mix up the order and do it over several days. I don't believe 2m difference is possible from the changes they made, on a throw of only 45 m… The real effects come into play at distances over 60-65 m when the discus flies higher, faster, longer. Even at close to 60m when I was a boy throwing the 1kg discus, I never had any issues with too much toppling of the discus that more mass in the rim could help against…

  12. Supreme Skills is a superb program that just goes to show you the ingenuity of how a potential problem can be improved, the little independent machine shops in Japan in particular, has such a dominance in the sense that they have provided excellent service and finished items for many markets. In the uk for example I would have to travel upto ten times the distance to find a similar amount of engineering shops, even then the uk company may not be interested in doing something like this as for the bow in example, the company could be doing a regular mass production run as to a single part, where the customer couldn’t afford to pay for a full days rate . That’s where we miss out, we have a good number of what some people called “Fred in a shed” basis for someone who has a concern at home willing to do this,

    Gratz to the companies who have been involved with the program, very impressed workmanship indeed!👍

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