High End QR 700c (ETRTO 622×17) Road Racing Bike 8/9/10/11 Speed Wheelset - Super Lightweight 1500g - Taiwan Sealed Bearings Hubs - 4D Technology - AERO bladed spokes

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Product code: 894970
Brand - Madspeed7
High End 700c (ETRTO 622×17) super light racing wheelset
Precision hand built
Professional stress relief makes for longevity and a stronger set of wheels
Clincher wheels
Aerodynamic sleeved rims
Reinforced 3mm wall thickness
4 dimensional spoke hole drilling (The 4D spoke drilling technology is what makes this wheelset so special. Read below. This wheelset can last you a very long time without ever breaking a spoke)
High end Taiwan NBK sealed bearings hubs
Front hub 2 sealed bearings, rear hub 4 sealed bearings
Rear hub - 10x130mm QR
Front hub - 9x100mm QR
11 speed compatible rear hub (Please note spacer is supplied for use of 8/9/10 speed cassettes. Hub is compatible with Shimano, Sunrace cassettes. NOT compatible with campagnolo cassettes)
High quality stainless steel AERO bladed spokes with brass nipples 
20 spokes front radial lacing & 24 spokes rear 2 to 1 spoke ratio (Read below Fulcrum 2:1 spoke ratio patent technology)
A pair of quick release skewers included
Spare spokes included
For rim brakes only (NOT suitable for disc brakes)
Suitable for 23-32C tyres
Wheelset weight  - 1500g

WHY 4D drilling technology?
With standard wheels, the traditional drilling holes are vertical angle holes, the assembly holes and spokes holes are completely perpendicular to the rim center point. This process is more convenient for machining and proofreading, with high production efficiency. But when assembly the wheel group, the disadvantage is coming. Because the flange hole and spokes holes always have a 5 degrees angles in both longitudinal and radial directions, so the connection between spoke and spoke cap will always have a bend and can never be in a straight line. If the tension is a little high, the spokes has a higher chance of breaking when riding.

With the 4D technology drilling, the drilling angle is slightly inclined. According to the pulling angle of each spoke, it is in the longitudinal and radial direction, each offset is about 5 degrees, so that it is in line with the angle of the flange to ensure the nipples and spokes to form a straight line as much as possible, thus fundamentally solving the problem with spokes angle which massively reduces the chance of spokes breaking. 

When you push on the pedals, the rotational force on the sprocket induces a slackening of the freewheel spokes with a consequent loss of rim tension.
This results in undesirable flex of the whole wheel and an unavoidable loss of energy. Fulcrum® has solved this classic cycling problem with its 2:1 Two-to-One™ Spoke Ratio patent, by doubling the spokes in the critical zones.

As a result there are two spokes which carry out the function of one, slackening and torsion are limited and the transfer of the athlete’s power is much more effective. Also, thanks to this system, spoke tensions are balanced more evenly between drive and non-drive sides and the fatigue life of the rim, hub and spokes is lengthened.

Customer Reviews

Based on 1 review
matt (Sheffield, GB)

Perfect all round, exactly what I was looking for. Superb fast delivery

We offer deliveries within the UK only.
We offer free next working day delivery (Via DPD) on all our products to customers within the UK Mainland.
For customers outside the UK Mainland, there will be extra charge for delivery which will be applied automatically at the checkout and delivery can take up to 2-3 working days.
Regrettably we do not post to the Channel Islands currently.
We aim to dispatch all orders same day when placed before 3pm Monday to Friday. Orders placed after 3pm, will be posted on the next following working day. We are closed on weekends and public holidays.

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