HUNT 48 LIMITLESS AERO DISC WHEELSET - Tubeless Ready

THE WORLD'S FASTEST DISC-BRAKE WHEELS UNDER 50mm

HUNT LIMITLESS technology (pending patent*) for low weight and extra-wide aerodynamics

AXLE OPTIONS - Front: QR, Bolt thru 12/9mm / Rear: QR, Bolt thru 12x142, 12x135, 10x135mm

H_CARE: FREE LIFETIME CRASH REPLACEMENT FOR FIRST OWNERS 

48 DEEP | 35 WIDE | 22.5 INTL W I 1,582G | CERAMICSPEED I 3 pawls of 7.5 degree engagement

"자전거 업계에서 자신의 에어로 휠셋이 다른 것보다 빠르다는 수많은 주장들이 넘쳐나고 있다. 이러한 혼란스런 상황을 잘 알고 있는 Hunt는 자신의 주장에 대해 아주 투명하게 공개하기로 한다. 이에 모든 technical white paper의 상세한 내용을 공개하게 된다. 그 내용은 윈드 터널 테스트 방법에 대한 연구 계획에 대한 data/graphs와 비교 테스트로 사용되는 모든 휠들의 비교 결과에 대한 정보가 담겨 있다."  

WIDER TIRES & WIDER WHEELS | RIDE FASTER 

논쟁할 수 없는 공기 역학적 성능으로 rim-brake wheels은 과거 23mm가 주류를 이루었던 시기를 지나 현재는 27-28mm 광폭으로 이전해가고 있다. 하지만 rim brake calipers로 인한 공기 역학 성능 제한과 아직도 23mm 타이어 장착을 기본으로 rim-brake wheels이 출시되는 상황이다. 그러나, 이미 프로 선수들을 포함하여 일반 라이더들도 25mm, 28mm 또는 심지어 30mm 타이어를 적극적으로 선택하는 움직임이 더욱 두드러지고 있다. 광폭 타이어 장착으로 인하여 얻는 향상되는 그립감, 승차감, 그리고 공기역학적 성능이 더 많은 라이더들의 선택을 유인할 것이라고 판단하여 Hunt는 road disc aero wheels은 광폭 타이어 장착을 염두해두고 디자인되는 것이 당연하다고 판단하였다. 

INDUSTRY-LEADING AERO KNOWLEDGE

2017년 HUNT에 합류한 Luisa Grappone (MSc Aerospace Engineering)은 wind tunnel 테스트와 aerodynamic wheels 개발을 10년 간 해온 경험을 바탕으로 (with World Tour pros from BMC Racing, Team Movistar & Cervelo Test Team) 새로운 HUNT의 세계적인 수준의 공기역학 성능을 지닌 신규 디스크 휠셋 개발을 Peter (Co-Founder & Materials Scientist)와 Tom (Co-Founder & Product Manager) and 다른 팀원들과 함께 주도하고 있다. 

HOW WIDE?

몇몇 리딩하는 휠 제조사와 자전거 회사들은 타이어보다 넓은 림의 장점에 대해 (심지어 28C 타이어보다도) 알고 있고 따라서 가장 효과적인 휠과 타이어 모두를 감안하여 aerofoil shape을 디자인하고 스포크 베드로의 공기흐름에서 발생하는 난기류를 줄이고자 하고 있다. 지금 분명한 것은 disc-brake road rims 또한 최상의 공기역학 성능을 얻기위해 충분히 더 넓어져야한다는 사실이다. HUNT는 이러한 새로운 자전거 휠셋의 변화 속에서 disc brake road wheels은 매우 큰 기회를 제공하고 있다는 점을 인식하고 30mm+ 초광폭 휠셋 개발을 다른 회사에서 개발한다는 소식이 알려지기 1년 전인 2017년 가을부터 초광폭 휠셋 개발에 착수하였다. 공기역학 전문 엔지니어인 Luisa는 여러 개의 3D-printed prototypes을 만들어 유럽의 유명 윈드 터널과 밀접하게 같이 테스트를 진행하였다. 18개월간의 고통스러운 연구와 디자인과 수차례의 윈드 터널 방문으로 드디어 34.5mm wide shape를 가진 48 Limitless Aero Disc Wheelset이 탄생하게 된다.

THE SOLUTION | HUNT LIMITLESS TECHNOLOGY (PENDING PATENT)

림이 광폭화됨으로써 얻는 공기역학적 혜택은 23/25mm tires와의 호환성을 잃을 수도있고 사이드월 강화를 위한 추가적인 카본 소재를 더함으로써 무게가 늘어나는 단점이 발생할 수 있다. HUNT 48 Limitless Aero Disc rim은 사이드월 부위에 추가적인 강도를 제공하는 co-molded low density polymer (density only 0.7g/cm3 vs carbon fibre prepreg of 1.6g/cm3)를 적용하여 무게를 낮게 유지하면서 초광폭을 실현할 수 있게 되었다. 이 기술을 LIMITLESS로 명명하고 HUNT는 patent 등록을 진행하고 있고 HUNT wheels에만 독점적으로 적용되는 기술이다. 이 기술 덕분에 당신은 세계에서 가장 빠르면서도 놀랍도록 낮은 무게를 가진 에어로 휠셋을 가질 수 있게 되었다. 

Fobes Article on Hunt Limitless Technology - https://www.forbes.com/sites/carltonreid/2019/07/19/aerodynamicist-luisa-grappone-designs-fatter-yet-faster-bicycle-wheels/#16f39a891f63

HUNT 48 LIMITLESS Aero Disc Test White Paper - https://cdn.shopify.com/s/files/1/0686/6341/files/The_HUNT_LIMITLESS_48_AERO_DISC.pdf

CERAMICSPEED BEARINGS: Hunt 36 UD Carbon Spoke Wheel은 CeramicSpeed's industry-leading hybrid ceramic bearings이 freehub body까지 기본 장착된다. CeramicSpeed Balls은 최고급의 Grade 3 Silicon Nitride로서 최상의 표면 처리와 완벽한 구의 형태를 가진다. Bearing balls은 베어링의 성능과 수명을 결정하는데 CeramicSpeed Balls은 비교할 수 없는 수준의 충격 강도 (impact strength), 부드러운 윤활성 (smoothness), 완벽한 구의 형태 (roundness) 그리고 매짐성 (brittleness: 유리처럼 연성이 없이 깨지는 성질)을 가진다. [주의] 세라믹스피드 세라믹 베어링은 3,000km 또는 1년중 빨리 도달하는 때에 맞추어 베어링 세척후 전용 그리스로 새롭게 도포후 사용해야 되며 이러한 기본적인 베어링 관리를 지키지 않아 생기는 문제에 대해서는 무상 AS가 불가능하오니 유의하시기 바랍니다. 

FEATURES

PATENTED LIMITLESS TECHNOLOGY - 가장 공기역학적으로 우수하고 안정적인 rim shape을 만들기 위해서 rim bed는 22.5mm의 내부 폭을 가질 필요가 있다. 이러한 내부 폭이 만들어내는 tire profile에서 가장 이상적인 형상의 rim의 외부 폭은 35mm이다. 이러한 초광폭의 도입으로 인한 무게 증가를 극복하기 위해서 저밀도의 polymer insert를 카본 pre-preg과정에서 만들어낸 공간에 삽입한 후 curing process에서 카본과 완전히 하나로 붙게하여 굉장히 강한 결합이 되게 한다. carbon의 밀도는 1.6g per cubic centimetre인데 반해 polymer insert는 단지 0.7g per cubic centimetre 밖에 안나가기에 하나의 림에서 50g의 감량을 실현할 수 있었다. 

RIM PROFILE - Patented LIMITLESS technology로 22.5mm rim bed와 34.5mm external rim width를 실현할 수 있었고 이는 rim이 타이어보다 더 넓게 자리하게 됨으로써 공기역학적 우수성을 확보할 수 있게 된다. 

CERAMICSPEED BEARINGS - 48 Limitless Aero Disc는 CeramicSpeed's hybrid ceramic bearings을 채택한다. CeramicSpeed Balls은 최고 품질인 3 Silicon Nitride으로 가장 높은 수준의 표면 마감과 구형상을 가지며 비교할 수 없는 수준의 충격 강성과 부드러움을 가진다.

FREEHUB BODY - 3개의 pawls은 각각 3 teeth를 가지며 48t ratchet과 체결되는데 인상적으로 낮은 7.5도의 체결 각도로 즉각적인 체결이 가능하다. Steel Spline Insert가 삽입되어 cassette sprocket damage로부터 보호해주도록 내구성을 강화하였다. 각 Freehub Body에는 2개의 CeramicSpeed bearings이 들어있다.

NIPPLES - 공기역학적 우수성을 얻기위해 디자인을 하면서도 정비 용이성과 사용편의성 또한 충분히 염두해두고 개발하였다. 그래서 external spoke nipples을 채택하였고 특히 튜브리스 타이어를 사용할 경우 만약에 internal nipples일 경우하면 nipples 접근을 위해서 튜브리스 테이프를 제거해야만 한다는 불편한 점이 없기에 올바른 선택이였다. 

WING SPOKES - 경쟁사들의 스포크들을 포함하여 다양한 스포크를 테스트한 결과 aerofoil profile of Pillar's Wing 20 spokes가 flat/blade options보다 훨씬 더 공기역학적 성능이 뛰어난 것을 발견하여 채택하게 되었다. 

WIND TUNNEL TESTED - 공기 역학 전문가인 Luisa Grappone는 수년 간의 경험을 바탕으로 50mm이하 휠셋에서는 세계에서 가장 빠른 휠셋을 개발하기 위해서 모든 사항에 대해 재점검하며 처음부터 다시 디자인하였다.

REAL WORLD TESTED - Paris Roubaix 경우에서 가장 어려운 cobbled sector인 Trouée d'Arenberg 코스에서 가장 빠른 기록을 실현하였다. 

SPECS OVERVIEW

THE FASTEST WHEELSET IS THE SUM OF THE FASTEST PARTS

LIMITLESS Rims | Wind tunnel에서 개발된 디스크 전용 림으로 unidirectional T24/30 소재가 적용되었다. 22.5mm 내부 폭과 35mm 외부 폭 그리고 48mm U-shape aero profile을 가진다.

Tires | Aerodynamically optimised for wider 25-28c tires. Tubeless-ready for lower weight and rolling resistance, featuring H-Lock technology for easy and secure tubeless installation. As with all our current HUNT rims, the LIMITLESS wheels have a normal hooked sidewall and are suitable for all clincher road tires including Continental.

FastEngage 7.5 Hubs | SPRINT straight-pull center-lock hubs이며 leaf-sprung pawls와 48 ratchets덕분에  7.5°의 낮은 각도의 즉각적인 체결이 가능한 허브이다.  

CeramicSpeed Bearings I 최고 품질의 Grade 3 Silicon Nitride으로 최상의 표면 마감과 구형상을 가진다. 다른 일반 세라믹 볼보다 15% 더 강하고 99% 더 높은 하중을 견딜 수 있고 100% 더 부드럽다. 6년 보증기간을 제공한다. 

Elliptical Wing Spokes | aerofoil profile을 가진 Pillar Wing 20 spokes가 사용되며 이는 Pillar나 다른 경쟁사의 flat/bladed options 보다 더 공기역학적으로 우수했다. 

Axles | Front - QR, Bolt thru 12/9mm, Rear - QR, Bolt thru 12x142, 12x135, 10x135. (front 15mm 미지원)

Weight | 1,582g

Max Rider Weight I 100Kg (including luggages)

Maximum tire pressure I 100psi with 25-28mm tires, 30mm do not exceed 70psi, 33mm do not exceed 50psi, 35-45mm do not exceed 40psi, 46mm+ do not exceed 35psi. 

RECOMMENDED TUBELESS TIRES

• SCHWALBE PRO ONE TUBELESS TIRES - 28mm
• CONTINENTAL GP5000 TL - 28mm or 32mm
• SCHWALBE G-ONE SPEED TUBELESS TIRES - 30mm 

IN THE BOX

• Hunt 48 Limitless Aero Disc Wheelset
• HUNT Black Shield tubeless tape fitted to wheels
• The axle adapters needed for your bike
• Cassette spacer for 8/9/10 speed
• Tubeless Valves
• Spare of each spoke plus nipples
• Quality control card signed by your wheel builder

보증 기간: 3 YEARS / CERMICSPEED: 6 YEARS

원산지: DESIGNED IN THE UK AND MADE IN TAIWAN

HUNT 48 LIMITLESS AERO DISC WHEELSET - Tubeless Ready

THE WORLD'S FASTEST DISC-BRAKE WHEELS UNDER 50mm

Designed by HUNT Product Engineering Manager, Luisa Grappone (Aerospace Engineering) HUNT LIMITLESS technology (pending patent*) for low weight and extra-wide aerodynamics

AXLE OPTIONS - Front: QR, Bolt thru 12/9mm / Rear: QR, Bolt thru 12x142, 12x135, 10x135mm

48 DEEP | 35 WIDE | 1,582G | CERAMICSPEED

"There are always tons of claims in the bike industry about how one aero product is faster than the next. Hunt knows that too, so they’ve tried to be totally transparent about how they make those claims. A full technical white paper is available that details their research protocols for wind tunnel testing methodology, including data/graphs and the full range of wheels that were tested against. Read it yourself here."  (the white paper)

BIKE RUMOR - HUNT 48 LIMITLESS AERO DISC “WORLD’S FASTEST” ROAD DISC BRAKE WHEELS ARE READY

WIDER TIRES & WIDER WHEELS | RIDE FASTER 

Leading rim-brake wheels have been at the 27-28mm wide mark for some time, with undisputed aero benefits over narrower designs. However, they are aerodynamically limited by rim brake calipers limiting the maximum width of the brake track. Further, most are optimised for narrower tires. 23mm tires used to be the standard… but for us, you and most pro riders, 25/28 and even 30mm tires are the preferred choice. Let’s face it: when leaning in on the final turn of a mass bunch sprint or descending sweeping alpine bends, you want serious grip! Plus, the lower rolling resistance benefits of 25 and 28mm tires* mean that road disc aero wheels should be specifically designed around these wider tires. Accordingly, this wheelset has been designed using schematics and feedback from Schwalbe's own engineers. (*Especially rider-system benefits, wheel & tire only tests do not include rider damped losses, and how lower pressures reduce these losses by reducing rider movement. This is a whole other area we will be releasing scientific data on.)

INDUSTRY-LEADING AERO KNOWLEDGE

We were ecstatic when Luisa Grappone (MSc Aerospace Engineering) approached us in 2017 about joining HUNT. Luisa’s experience in wind tunnel testing and developing wheels for 10 years (with World Tour pros from BMC Racing, Team Movistar & Cervelo Test Team) showed her industry-leading experience. So of course we welcomed Luisa to join us as HUNT Product Engineering Manager in August 2017. Using Luisa as our Engineering lead, Peter (Co-Founder & Materials Scientist), Tom (Co-Founder & Product Manager) and the whole team here set to work immediately to develop you the fastest ‘unlimited’ road disc-brake wheelset in the world!

HOW WIDE?

34.5mm! In the last 9 months, road aero disc-brake rim widths have been creeping out to 30-32mm, with several leading wheel and bike companies realizing the benefits of having a rim wider than the tire (even a 28mm tire). This creates the most effective overall aerofoil shape (when considering the wheel and tire together) and reduces turbulence as airflow transitions into the spoke bed. It is now obvious that disc-brake road rims need to be significantly wider to be at their best aerodynamically. With our experience at HUNT, we knew disc brakes provided us a huge opportunity to smash open this area of wheel development. In autumn 2017, a full year before anyone knew about any other wheel companies’ 30mm+ development, we set about unleashing wheel widths, and Luisa designed several 3D-printed prototypes for wind tunnel testing. Luisa worked closely with Europe’s leading bicycle wind tunnel, and over 18 months of painstaking research, design and multiple wind tunnel visits, developed the 34.5mm wide shape for the new 48 Limitless Aero Disc.

WIDE RIM = WEIGHT OR TIRE PROBLEM?

The aero benefits of going wide, can come with downsides, as usually a compromise choice has to be made: - Go for a wider internal rim of 24 or 25mm = LOSE TIRE COMPATABILITY with 23/25mm tires from leading brands. - Choose to add extra carbon material to thicken the sidewalls, in order to maintain the wide aero shape = HEAVY RIM WEIGHT

THE SOLUTION | HUNT LIMITLESS TECHNOLOGY (PENDING PATENT)

The HUNT 48 Limitless Aero Disc rim has as much carbon-fibre material and mass as any other comparable road disc wheelset, and far surpasses ISO impact testing. Added to the sidewall area is an extra-strengthening co-molded low density polymer (density only 0.7g/cm3 vs carbon fibre prepreg of 1.6g/cm3) that keeps the weight low whilst allowing the extra width. LIMITLESS is a pending patent owned by HUNT and developed by Luisa, Tom and Pete, and is exclusive to HUNT wheels. So, you can have a wheelset with the world’s fastest aero shape but also impressively low weight.

Fobes Article - https://www.forbes.com/sites/carltonreid/2019/07/19/aerodynamicist-luisa-grappone-designs-fatter-yet-faster-bicycle-wheels/#16f39a891f63

THE RESULTS…

The wind tunnel data we recorded is shown against the full range of incumbent world-class aero wheels in the charts below. The results speak for themselves. It was amazing to see Luisa’s face when it became evident what we'd achieved for riders. It’s been hard work but it’s been very worthwhile. This process and the knowledge gained from pushing the boundaries of aero wheel development creates huge opportunities to serve you with a wide range of world leading aerodynamic wheels…this is just the beginning! 

FEATURES

PATENTED LIMITLESS TECHNOLOGY - In order to create the most aerodynamic & stable shape for the tire, a rim bed of 22.5mm is needed. With the tire profile this creates, the ideal shape of the rim curves out to an external width of 35mm. To overcome the weight penalty associated with this, we use a (non-structural) low density expanding polymer insert, inside a channel carved out during pre-preg. This is bonded to the carbon during the curing process, resulting in an exceptionally strong bond. The density of carbon is 1.6g per cubic centimetre, whereas the polymer insert weighs just 0.7g per cubic centimetre, resulting in a (rotational) mass loss of just over 50g per rim. This patented technology enables us to consider the limits of material properties, and smash right past them.

RIM PROFILE - Patented LIMITLESS technology allows for a 22.5mm rim bed and a huge 34.5mm external rim width, meaning the rim sits far wider than the tire for aerodynamic superiority.

CERAMICSPEED BEARINGS - The 48 Limitless Aero Disc will come fully equipped with CeramicSpeed's industry-leading hybrid ceramic bearings, even in the freehub body. All CeramicSpeed Balls are of the highest quality Grade 3 Silicon Nitride, featuring the highest achievable surface finish and roundness. The quality of the balls is what determines the performance and lifetime of a bearing. The CeramicSpeed Balls feature unparalleled impact strength, smoothness, roundness and brittleness.

FREEHUB BODY - Featuring 3 multi-point pawls with 3 teeth each and a 48t ratchet ring. The result an impressively low 7.5 deg engagement angle. Durability is a theme for HUNT, and so all our freehub bodies have Steel Spline Insert re-enforcements to provide excellent durability against cassette sprocket damage often seen on standard alloy freehub bodies. Includes 2 CeramicSpeed bearings in the body.

NIPPLES - Despite designing a wheelset with aerodynamic supremacy in mind, serviceability and usability has always been a core philosophy of how we put wheels together. External spoke nipples are absolutely the right choice with this in mind, especially when running tubeless tyres as you would have to remove the tubeless tape to access the nipples were they to be internal

WING SPOKES - After considerable testing across multiple spoke types (including analysis against competitor spokes), we found that the aerofoil profile of Pillar's Wing 20 spokes offer even further aerodynamic advantages over flat/bladed options.

WIND TUNNEL TESTED - Developed by Luisa Grappone, with years in the wind tunnel spent testing every last detail. We've left no stone unturned in designing this wheelset from the ground up to be very fastest in the world within its class.

REAL WORLD TESTED - The fastest wheels ever down the Trouée d'Arenberg, the most hallowed (and, alongside Mons-en-Pévéle & Carrefour de l'Arbre, the hardest) of the cobbled sectors used in the Paris Roubaix. Nothing tests the limits of a wheelset like pavé.

SPECS OVERVIEW

THE FASTEST WHEELSET IS THE SUM OF THE FASTEST PARTS

LIMITLESS Rims | Wind tunnel developed, features disc-specific, unidirectional T24/30 rims, offering 22.5mm internal and 35mm external widths, and a 48mm u-shape aero profile.

Tires | Aerodynamically optimised for wider 25-28c tires. Tubeless-ready for lower weight and rolling resistance, featuring H-Lock technology for easy and secure tubeless installation. As with all our current HUNT rims, the LIMITLESS wheels have a normal hooked sidewall and are suitable for all clincher road tires including Continental.

FastEngage 7.5 Hubs | SPRINT straight-pull center-lock hubs, boasting an engagement rate of just 7.5° owing to the leaf-sprung, multi-point pawls and 48 ratchets in the hub shell. 

CeramicSpeed Bearings | CeramicSpeed clearly need little introduction. We were honoured when they approached us last year to work together for the LIMITLESS project. As you know, CeramicSpeed bearings are renowned for their low rolling resistance, and are chosen by the top international athletes and teams.

Elliptical Wing Spokes | Pillar Wing 20 spokes with aerofoil profile. Tested and proven to provide aerodynamic advantage over flat or bladed options both from Pillar and other competitors.

Axles | Front - QR, Bolt thru 12/9mm, Rear - QR, Bolt thru 12x142, 12x135, 10x135. (front 15mm 미지원)

Weight | 1,582g

Max Rider Weight I 100psi with 25-28mm tires, 30mm do not exceed 70psi, 33mm do not exceed 50psi, 35-45mm do not exceed 40psi, 46mm+ do not exceed 35psi. 

Maximum tire pressure I 100psi with 25-28mm tires, 30mm do not exceed 70psi, 33mm do not exceed 50psi, 35-45mm do not exceed 40psi, 46mm+ do not exceed 35psi. 

RECOMMENDED TUBELESS TIRES

• SCHWALBE PRO ONE TUBELESS TIRES - 28MM
• CONTINENTAL GP5000 TL - 28MM
• SCHWALBE G ONE SPEED TUBELESS TIRES - 30MM

IN THE BOX

• Hunt 48 Limitless Aero Disc Wheelset
• HUNT Black Shield tubeless tape fitted to wheels
• The axle adapters needed for your bike, just fill in the simple form shown after order completion, the form is also included in your order confirmation page.
• Cassette spacer for 8/9/10 speed
• Tubeless Valves
• Spare of each spoke plus nipples
• Quality control card signed by your wheel builder

WARRANTY: 3 YEARS

DESIGNED IN THE UK AND MADE IN TAIWAN