Halo Carbaura RCD 700c wheelset review
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Halo Carbaura RCD 700c wheelset review

Budget, aero, carbon disc wheels

Our rating

3.5

1070.00

David Caudery / Immediate Media

Published: June 26, 2020 at 4:18 pm

Our review
Halo’s RCD 35 wheelset is relatively quick, light and cheap

Pros:

Decent performance; good value

Cons:

Freehub noise

Halo’s disc-brake version of the Carbaura wheelset is available in 35mm or 50mm depths. I tested a pair of the 35mm tall Halos, which have unidirectional carbon rims measuring 25mm wide externally and 19mm internally.

They’re laced to the RD2 hubs with 24 J-bend, slim, black Aero Racing Spokes per wheel with brass nipples.

To counteract the forces from the disc brakes and drivetrain, the wheels have eight spokes crossed once on one side and 16 spokes crossed twice on the other.

The freehub uses Halo’s 120-point engagement Supadrive system, which is said to engage almost instantly and is available in Campagnolo, SRAM XDR or Shimano fit.

My pair of RCD 35s weighed 1,546g, including 12mm thru-axle end caps and tubeless rim tape. Halo says that the rims have been aerodynamically shaped by Computational Fluid Dynamics (CFD) testing.

The rims are a symmetric, broad V-shape with a fairly blunt leading edge, not parallel-sided with a rounded edge profile, like some of the leading aero rims.

They are tubeless ready with tubeless tape fitted and are claimed to be suitable for tyres from 25mm to 35mm wide.

Instantly noticeable is the high-pitched noise from the Supadrive freehub, which sounds urgent even when pushing the bike. When freewheeling, it sounds like a sackful of crickets, but the drive does pick up quickly when you press on the pedals.

When attacking hills or sudden sprints, the Halos feel laterally stiff, helping accurate line control. Using slim, J-bend spokes adds some ride compliance making the wheels feel a little less taut than straight-pull spoked models and producing effectively quick, rather than aggressive, acceleration.

They gain speed keenly, sustain it willingly on flat or undulating terrain and are predictably solid in crosswinds but, at least in my tested configuration, lacked a real kick when climbing.

The RCD 35’s straightforward build promises simple maintenance and this is a decent value carbon fibre aero wheelset. Their performance isn’t class-leading but, then again, neither is the price.

Product

Brand halo
Price 1070.00 GBP
Weight 1546.0000, GRAM (35mm) - including 12mm thru-axle end caps and tubeless rim tape

Features

br_rimMaterial carbon
br_tubelessCompatibility tubeless_ready
br_wheelSize 29in_700c
br_brakeTypeSimple disc
br_spokes Halo Black Aero Racing Stainless spokes
br_freehub 120-point engagement Supadrive system (available in Campagnolo, SRAM XDR or Shimano fit)
br_rimDepth 25mm
br_rimInternalWidth 19mm
br_spokeCountRear 24
br_spokeCountFront 24