How Mountain Bike Tires Are Made | How It’s Made

How Mountain Bike Tires Are Made | How It’s Made


Narrator: MOUNTAIN BIKE TIRES
ARE TRUE TRAILBLAZERS, SPECIFICALLY DESIGNED
FOR OFF-ROAD RIDING. WIDER THAN
REGULAR ROAD TIRES, MOUNTAIN BIKE TIRES
HAVE RAISED KNOBS OR LUGS THAT ADD STABILITY
ON UNEVEN TERRAIN. BUILT TO WITHSTAND THE TRAIL,
THESE TIRES CAN HANDLE IT ALL. WHEN THE RUBBER HITS THE DIRT,
IT’S ALL ABOUT CONTROL. MOUNTAIN BIKE TIRES ARE DESIGNED
TO GRIP THE GROUND AND PROVIDE TRACTION
OFF-ROAD. FIRST, DESIGNERS USE
A COMPUTER MODEL OF A TIRE TO SIMULATE THE EFFECTS
OF DIFFERENT RUBBER COMPOUNDS. CONSTRUCTION BEGINS
WITH RUBBER COMPOUNDS BEING MIXED TOGETHER
TO CREATE PARTS OF THE TIRE. INGREDIENTS INCLUDE SYNTHETIC
AND NATURAL RUBBERS, SULFUR,
AND OTHER CHEMICALS. ROTATING SPIRAL BLADES
BREAK DOWN THE MATERIALS. FRICTION FROM THE MIXING
HEATS AND SOFTENS THEM. THIS TRANSFORMS
THE INGREDIENTS INTO A DOUGH-LIKE
RUBBER COMPOUND. POWERFUL ROLLERS SQUEEZE THE
COMPOUND INTO THICK LONG SHEETS, AND BLADES CUT THE ROLLED RUBBER
INTO NARROW STRIPS. THEN, THE RUBBER TRAVELS
THROUGH MORE ROLLERS THAT SQUEEZE IT DOWN
TO THE DESIRED THICKNESS. THE RUBBER SHEETS LAND ON
A CART, READY FOR USE. ♪♪ TECHNICIANS INCASE
STEEL BEAD WIRE WITH ONE OF
THESE COMPOUNDS. THE BEAD WIRE IS
THE PART OF THE TIRE THAT CONNECTS TO
THE WHEEL’S RIM. AS STEEL WIRE TRAVELS
THROUGH AN APERTURE, THE RUBBER IS EXTRUDED
TO FORM THE CASING. THE MACHINE DELIVERS
THE BEAD WIRE TO A SPINNING DISK. THE DISK WINDS
THE BEAD WIRE, SHAPING IT INTO RINGS,
WHICH FIT TO A WHEEL RIM. ♪♪ TO MAINTAIN THE DIAMETER
OF THE WIRE, THE TECHNICIAN TAPES
THE ENDS TOGETHER, HOLDING THE SHAPE UNTIL
THE NEXT STAGE OF PRODUCTION. NEXT, RUBBER SHEETS WITH
VARYING CHARACTERISTICS ENTER AN EXTRUDER. USING HEAT AND PRESSURE, THE EXTRUDER FORCES THE RUBBER
THROUGH DIES. THIS PROCESS MERGES
THEIR CHARACTERISTICS INTO A SINGLE SHEET. THE SHEET WILL BE USED
TO MAKE THE BICYCLE’S TREAD. THE TREAD RUBBER TRAVELS
THROUGH A CHANNEL OF COOL WATER. MEANWHILE, ROLLERS COAT FABRIC
WITH RUBBER TO MAKE PLIES
FOR THE TIRE CASING. A MOVING BLADE
CUTS IT INTO STRIPS. THIS RUBBER
IS NATURALLY TACKY, SO THE PIECES
CAN BE EASILY SPLICED. THE SYSTEM FEEDS THE STRIPS
TO TIRE-BUILDING MACHINE. A SKILLED ASSEMBLER WRAPS
THE STRIPS TO THE MACHINE DRUM TO FORM THE TIRE CASING, AND SPLICES THE RUBBER
WHERE THE ENDS MEET. NEXT, ROBOTS SLIDE TWO
WIRE BEADS AROUND THE CASING. THE ENDS OF THE DRUM
FOLD THE SIDES OF THE CASING OVER THE BEAD WIRES. THE TECHNICIAN APPLIES
RUBBER-COATED FABRIC TO THE BEAD WIRES,
STRENGTHENING THE AREA. THE TREAD RUBBER
IS PLACED IN THE CENTER. A ROLLER APPLIES PRESSURE
AS THE DRUM SPINS TO WIND THE TREAD
AROUND THE CASING. THEN, THE ENDS ARE
PRESSED TOGETHER MANUALLY. AND ONE MORE TURN OF THE DRUM
SECURES THE TREAD RUBBER TO THE CASING. ONCE VENT HOLES HAVE BEEN
CUT IN THE RUBBER, IT’S OVER TO AN EXPANDING MOLD,
WHERE THE TIRE TAKES SHAPE. THE TECHNICIAN INSERTS
A RUBBER CURING BLADDER TO MAINTAIN
THE SHAPE OF THE TIRE. THEN, HE PLACES THE MOUNTAIN
BIKE TIRES IN CURING MOLDS. THESE INDIVIDUAL MOLDS WILL STEAM-COOK THE TIRES
UNDER PRESSURE TO FURTHER SHAPE THEM. THIS PROCESS FORMS KNOBS
AND OTHER PROTRUSIONS ON THE TIRE SURFACE THAT ARE DESIGNED TO GRIP
A RUGGED TERRAIN. LIKE A BIG WAFFLE IRON,
THIS MOLD HAS COOKED, AND FORMED
THE MOUNTAIN BIKE TIRE. THE TIRE IS THEN PLACED
ON A RACK TO COOL. NEXT, THE BIKE TIRE
UNDERGOES A DURABILITY TEST WHILE A COMPUTER MEASURES
ROLLING RESISTANCE. THAT’S THE ENERGY LOST
WHEN THE TIRE ROTATES, AND AN INDICATION OF
HOW EASILY THE TIRE WILL ROLL. THIS MOUNTAIN BIKE TIRE IS NOW CLEARED
TO TRAVEL OFF THE BEATEN PATH. ♪♪

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  1. I can't wait to get out on my bike this summer. I drive in the winter months and ride in the summertime to save gas money and it's great for your body. I work 14 miles from home so starting within the next few weeks I'll be riding 28 miles a day 5 days a week.

  2. @Science channel, some of us got recently blocked from some of your vids. Says they're not available in our region. I've seen multiple people saying this. Could you make them available or at least explain whats going on? Thanks!

  3. You did not show how you make Black ruber, how yo put net armature inside ruber, and how you make other tire components. Ok video but some important production steps are missing

  4. Me:
    Youtube: How Mountain Bike Tires Are Made
    Me:
    Youtube: How Mountain Bike Tires Are Made
    Me:
    Youtube: How Mountain Bike Tires Are Made
    Me: OK OK FINE! THERE! I CLICKED IT!

  5. The machinery looks old,slow and dangerous. Thanks for the video, always interesting to see how things are made.

  6. دائما تحتاج صناعه الاطارات الى يد عامله ماهره …. عمل رائع

  7. I like how they just leave all the packaging on the ingredients for the rubber compound when they dump them in the mixer

  8. Hurry!!! hide the children that actually make the tires and lets put an adult in the video!
    Chinese labor (slave) camps. It is mostly the machines doing the work, I see no reason why this shouldn't be made in America.

  9. The narrator's way of speaking is very similar to that of the guide telling old people about geysers in "BnB do America" 🙂

  10. This ain't right, I didn't hear no ghost. Where are the time traveling aliens from Uranus? And why weren't there any old guys in a van trying to buy all the old equipment? It must be a conspiracy.

  11. 4:26 hey those are kenda small block eights… That's sad that I can recognize that just by the tread

  12. It’s the tire is THIN ITS TOO THIN Rubs down to the threads touching the tube make it thicker way too thin 😒😞 🚲

  13. It looks like pasta. Not gonna lie, I forgot I was watching a video about tires for a second, and I thought I was watching a video about pasta.

  14. Yeah but they didnt show when they add the kevlar or steel mesh reinforcents to avoid small things or pieces of glass from piercing the rubber and the inner tube.

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