Scott has launched its newly up to date Foil RC aero street bike forward of the Tour de France. To be ridden by WorldTour outfit Staff DSM on the Grand Boucle, the brand new race machine guarantees spectacular beneficial properties throughout the holy trinity of motorcycle efficiency: aerodynamics, weight and stiffness.
The model has labored with aero professional Simon Sensible to develop the brand new frameset, leading to a claimed 16-watt saving at 40km/h – or a one minute, 18-second saving over 40km at that velocity.
On the similar time, Scott has achieved a 915g body weight in its lightest HMX SL carbon layup, a 9 per cent drop on the previous-generation Foil.
The geometry has additionally been tweaked, now largely mirroring the Swiss model’s Addict RC light-weight race bike for responsive and agile dealing with.
The Foil RC will likely be obtainable in 5 fashions by the 12 months’s finish, with costs set to be confirmed later within the 12 months.
Aero first with Drag2Zero
If Drag2Zero sounds acquainted, it’s as a result of the corporate has a historical past of working with Scott on the earlier generations of the Foil, plus a long-standing relationship with ENVE, amongst a number of different cycling-related team-ups. Its founder, aerodynamics professional Simon Sensible, has had a big affect on aero improvement lately.
A 3-year joint improvement course of has yielded, Scott claims, the quickest bike the Swiss model has ever produced, reaching 10 per cent higher effectivity within the wind tunnel than the earlier era of the Foil.
This has been achieved with in depth computational fluid dynamic (CFD) testing throughout each tube profile within the new Foil RC, the place every NACA-inspired tube is examined individually and once more as a whole frameset mockup.
NACA profiles (the place the rearside edge is squared off to a point) are nothing new in current aero bike design, however Scott says it has labored with Drag2Zero to optimise airflow across the full package deal.
“One mistake generally made by bike manufacturers is that they concentrate on the frameset or full bike in isolation,” says Drag2Zero’s Sensible. “In that case, you’ll be able to find yourself with a frameset that’s extremely quick on paper, however then you definitely put a rider on it and discover that they’re in a much less aero place, slowing the entire system down.”
For the Foil RC, Sensible oversaw the a number of iterations of CFD simulations to seek out the quickest answer on paper, full with wheels and rider, earlier than testing them for actual within the Mercedes F1 group’s wind tunnel.
Sensible concedes that optimising airflow over bikes is an actual problem as a result of the air is consistently altering. Because of this, the Foil RC has been developed to function most effectively in a 4- to 10-degree yaw angle sweetspot zone, and at 32 and 48km/h speeds.
These wind instructions and speeds, Scott says, greatest approximate the broad sort of driving a Foil RC rider is more likely to encounter.
Visually, the Foil RC carries some neat particulars, a few of that are a response to a UCI regulation change that allowed for ‘compensation zones’ throughout the body design. A big part of carbon has appeared above the underside bracket, whereas a smaller fill is notable on the head tube/high tube junction.
Moulded strafes are seen behind a slimmed-down fork crown and on the seatstay-seat tube junction, whereas the dropped seatstays are toed inwards at 10 levels to direct air outwards, lowering interplay and turbulence across the inside fringe of a wheel, in accordance with Scott.
The fork legs are asymmetrical, with a extra curved profile on the non-driveside versus a flatter form on the driveside, whereas the brake calipers are properly tucked in away from the wind.
A one-piece Syncros Creston iC SL cockpit has been developed particularly for the Foil RC, which Scott says brings a six-watt saving versus the earlier Foil, that includes absolutely built-in brake hose routing by the pinnacle tube. There are additionally two-piece variations of the Creston for fashions additional down the vary.
An fascinating omission is a scarcity of recessed bottle cage mounts, just like what’s used on the Pinarello Dogma F and BMC Timemachine Street, which Sensible says didn’t produce a significant efficiency enchancment in testing with a bottle in place.
All in, Scott and Sensible declare the brand new Foil RC saves 16 watts of drag at 40km/h, which equals a one minute, 18-second saving over 40km.
915g body weight, 9% lighter than earlier than
Scott says the brand new Foil RC isn’t nearly aero efficiency, making the daring (but well-repeated) declare that it’s additionally addressed weight and stiffness.
558 particular person items of HMX-SL carbon fibre (the very best grade of carbon utilized by Scott) are used to make the top-level Foil RC body, that are damaged down into simply 4 chunks: the principle body triangle, the 2 seatstay/chainstay assemblies and the seatpost sleeve.
Utilizing Finite Component Evaluation, Scott says the Foil RC’s ‘stress zones’ have been examined utilizing simulations that reveal the weight-to-stiffness ratio when materials is utilized or faraway from the body. For instance, a 10g addition of carbon would possibly yield a good thing about 8 stiffness ‘factors’, equalling a ratio of 1.25.
The decrease the ratio, the higher. Scott received’t reveal the precise ratios that it aimed for with the brand new Foil RC, nevertheless it does say that after over 300 iterations examined, an unpainted body weighs simply 805g in a 56cm dimension, saving 110g over the second-generation Foil.
The underside bracket is stiff to the tune of 60N/mm, whereas the pinnacle tube charges at 92N/mm – which, for comparability, Scott says matches its Addict RC bike, a machine that made our 2022 Bike of the 12 months shortlist.
With the body painted, Di2 battery holder in place and derailleur hangers fitted, the Foil RC HMX-SL body weighs 915g (dimension 56cm).
Improved consolation and sharp dealing with
The brand new Foil RC options equivalent geometry to the Addict RC, save for the Syncros Creston handlebar, which leads to a 10mm shorter attain.
Scott says this brings with it the sharp dealing with traits of its light-weight bike, whereas part arm Syncros has engineered flex into the brand new Duncan SL Aero CFT seatpost to clean the journey.
The seatpost is designed in three elements – the full-length submit with a big cut-out part, a stabilising rear part and a rubberised filler, which might be swapped with a further gentle (just like the system employed by Merida for its Reacto aero bike).
The design permits the weight-bearing full-length submit to flex in opposition to the top-most nook of the stabilising part, delivering motion in a tightly angled arc, which Scott claims improves ergonomics of the saddle contact level over a extra conventional, wider arc.
A particular silicone-based grease is utilized to the tessellating seatpost sections, which is alleged to cut back the possibilities of creaking. This must be cleaned and refreshed each 1,000km.
Scott additionally purposefully specifies the Foil RC with a 25mm entrance tyre and a 28mm rear tyre to strike a steadiness between front-facing airflow and rear consolation. You may go as much as 30mm broad if you wish to maximise consolation, although.
Total, Scott reckons the brand new body is 10 per cent extra snug than the earlier mannequin, not factoring in tyre alternative.
Scott Foil RC availability and costs
The Scott Foil RC is ready to be obtainable by the tip 2022, with 5 fashions obtainable at launch. Owing to the present international local weather and linked impacts on provide and prices, Scott wouldn’t affirm pricing at time of writing.
We’ll be receiving a motorbike to check quickly, after which extra particulars may turn into obtainable.
Within the meantime, take a look at our first journey evaluate proper right here.
Scott Foil RC specs
Scott Foil RC Final
- Body: HMX SL carbon
- Fork: HMX SL carbon
- Groupset: SRAM RED eTap AXS
- Energy meter: SRAM RED energy meter crankset
- Wheels: ZIPP 454 NSW
- Tyres: Schwalbe Professional One, tubeless, 25mm entrance / 28mm rear
- Seatpost: Syncros Duncan SL Aero CFT
- Handlebar/stem: Syncros Creston iC SL Aero
- Saddle: Syncros Belcarra V-Idea 1.0
Scott Foil RC Professional
- Body: HMX carbon
- Fork: HMX carbon
- Groupset: Shimano Dura-Ace R9170 Di2
- Energy meter: No
- Wheels: Shimano C50
- Tyres: Vittoria Corsa Management, tubeless, 25mm entrance / 28mm rear
- Seatpost: Syncros Duncan SL Aero CFT
- Handlebar/stem: Syncros Creston iC SL Aero
- Saddle: Syncros Belcarra V-Idea 1.0
Scott Foil RC 10
- Body: HMX carbon
- Fork: HMX carbon
- Groupset: Shimano Ultegra R8170 Di2
- Energy meter: No
- Wheels: Syncros Capital 1.0 50 Disc
- Tyres: Schwalbe One, tubeless, 25mm entrance / 28mm rear
- Seatpost: Syncros Duncan SL Aero CFT
- Handlebar/stem: Syncros Creston 1.0 Aero
- Saddle: Syncros Belcarra V-Idea 2.0
Scott Foil RC 20
- Body: HMX carbon
- Fork: HMX carbon
- Groupset: SRAM Rival eTap AXS
- Energy meter: No
- Wheels: Syncros Capital 1.0 50 Disc
- Tyres: Schwalbe One, tubeless, 25mm entrance / 28mm rear
- Seatpost: Syncros Duncan SL Aero CFT
- Handlebar/stem: Syncros Creston 2.0 Aero
- Saddle: Syncros Belcarra V-Idea 2.0
Scott Foil RC 30
- Body: HMX carbon
- Fork: HMX carbon
- Groupset: Shimano 105 R7170 105 Di2
- Energy meter: No
- Wheels: Syncros RR2.0 Disc
- Tyres: Schwalbe One, tubeless, 25mm entrance / 28mm rear
- Seatpost: Syncros Duncan SL Aero CFT
- Handlebar/stem: Syncros Creston 2.0 Aero
- Saddle: Syncros Belcarra V-Idea 2.0
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