Review: Blue Flow BF37/31 All Mountain Carbon Wheels

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Rachel’s been testing some value-oriented carbon mountain bike wheels from a UK-based company called Blue Flow Wheels. How did they hold up? Over to Rachel for the review! I first came across Blue Flow when researching carbon wheel crash replacement schemes (see our ‘Ten Best Carbon Wheel Crash Replacement Schemes’ story). Based in Nottingham, it’s one of a few small UK companies that hand builds its wheels using sourced carbon rims and dependable hubs to produce competitively priced wheels. The Hardware Blue Flow’s component choice has been designed to provide a strong and reliable no-nonsense wheelset for a variety of difference riding styles. Rims are constructed from unidirectional Toray T700 carbon fibre and are available in 27.5in and 29in sizes, across four models: BF30/24: 24mm internal width for tyres up to 2.2in wide BF37/31: 31mm internal width for tyres 2.2-2.6in wide BF42/35: 35mm internal width for tyres 2.3-2.8in wide BF50/43: 43mm internal width for tyres 2.8-3.25in wide All the rims are asymmetric to equalise spoke tensions, which increases the stiffness and strength of the wheel. When compared to an alloy rim the profile of the carbon rim is noticeably different. The 3.25mm thickness of carbon on each side of the hookless rim makes for a beefy looking and strong profile. Wheelsets are hand built to order onto Hope Pro4 hubs using either DT Swiss Competition or Sapim CX Ray spokes. Opting for the CX Ray will give you extra reliability and a weight saving of around 90g per wheelset but...

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