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Willspeed XRay XB2 Fast Fox Conversion Kit WFFXB2
Brand: Willspeed
Part No: WFFXB2
Expected Tue 10 Nov
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Description
The Willspeed XRay XB2 Fast Fox Conversion Kit, part number WFFXB2, is a lightweight conversion system for an Xray XB2 model car, combining a 2mm chassis with cantilever suspension. An Xray XB2 donor car is required to complete the conversion, with suggested compatibility covering versions 24, 25 and 26; version 27 is still to be confirmed.
The Fast Fox layout moves the dampers and their mounts inboard and below the upper link level. This lowers the centre of gravity and centralises mass, helping to reduce body roll and change the car's response during cornering. The cantilever arrangement also provides additional suspension adjustment while allowing a setup from the standard kit suspension to be transferred to the converted chassis.
With the dampers and towers moved away from the front and rear ends, the design reduces the frontal area around the wheels and tyres by almost 30 percent, according to the manufacturer. This creates a clearer airflow path to the wings and provides another area for adjustment. The conversion uses carbon and billet aluminium chassis components together with front and rear rocker plates, a Formula bodyshell and the required fitting hardware.
What's Included
- WS Fast Fox XB2 carbon chassis with a 2mm chassis design
- Left and right billet aluminium chassis rails, kick-up section and carbon rail inlays
- Four rocker posts, four rocker pivots and four rocker pivot crush washers
- Left- and right-hand front and rear carbon rocker plates
- Carbon wing plate, spacers, M3 ball joints and 4x8x3 bearings
- WS Fast Fox Formula XB2 bodyshell and decal sheet
- Button-head, countersunk and grub screws with M3 Nyloc nuts
The supplied components are intended to be assembled with parts from the donor car. The kit shown by the manufacturer was built from an XB2 26 Carpet model, providing a reference for the conversion layout.
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Specifications
Willspeed XB2 Fast Fox Conversion
With the XB2 version there are a number of updates over the original B7 Fast Fox which focuses on an improved lightweight design including a 2mm chassis.
Revolution starts here!
Innovation never stops and as refinement continues in model car racing, an alternate step is required to bring the next stage, the new era.
We at WS pride our selves in both innovative thinking and engineering ability, combining those entities Fast Fox was born.
Introducing a cantilever suspension system, this provides significant benefits applicable to all tracks and conditions -
Lower CoG
In race cars, full size and model lower the Centre of Gravity reduces body roll and increases stability allowing for increased cornering speeds, increased setup ability with less risk of flipping over.
With all the damper mass moved below the upper link level there's a significant amount of mass significantly lower!
Polar MoI
The unique positioning of the dampers on the Fast Fox is intentional.
Polar Moment of Inertia is about centralising mass. By moving the shocks and their associated mounts inboard we have taken weight out of the ends of the car without adding sprung mass.
This will both speed up the response of the car when turning but also help the suspension to maintain a steady platform over the bumps.
Aero
The dampers and the towers are not in the way!
Ignore the wheels and tires the frontal area of the car is almost 30% less. This not only reduces drag but, just as significantly, creates a smooth path for the air flow to the wings, the drag is much more effective and adjustable.
Adjustability
One of the key requirements for the design during the development phase was to create a system that responds just like the kit suspension does. If you have a setup dialled in at your home track you can transfer this to the new chassis and go racing. Then with the improvements detailed above and the extra adjustability that a push rod, inboard suspension system brings you can start finding new gains that simply weren’t available you before..
Cantilevers bring a whole new world of adjustment which has only just been unleashed.
In a time dominated by small changes this could well be next big milestone change!
What's Included / What's Required
A Xray XB2 donor car is required to complete the conversion. 24, 25, 26 versions are compatible (27 tbc) The kit in the images is built from a 26 Carpet model.
Included Components -
Manual Download here -
W3149 - WS Fast Fox XB2 Carbon Chassis (1)
W3150 - WS Fast Fox XB2 Billet Aluminium Chassis Rail - Left (1)
W3151 - WS Fast Fox XB2 Billet Aluminium Chassis Rail - Right (1)
W3152 - WS Fast Fox XB2 Billet Aluminium Chassis Kick Up Section (1)
W3131 - WS Fast Fox Rocker Post (4)
W3132 - WS Fast Fox Rocker Pivot (4)
W3153 - WS Fast Fox XB2 Chassis Rail Carbon Inlay (2)
W3135L - WS Fast Fox Front Carbon Rocker Plate - LH (1)
W3135R - WS Fast Fox Front Carbon Rocker Plate - RH (1)
W3136L - WS Fast Fox Rear Carbon Rocker Plate - LH (1)
W3136R - WS Fast Fox Rear Carbon Rocker Plate - RH (1)
W3154 - WS Fast Fox XB2 Carbon Wing Plate (1)
W3139 - 3x7.5x2 Spacer (2)
W3140 - M3 Ball Joint (8)
W3143 - WS Fast Fox Rocker Pivot Crush Washer (4)
W3158 - WS Fast Fox "Formula" Bodyshell - XB2 (1)
W3146 - WS Fast Fox Decal Sheet (1)
Bearing 4X8X3 (8)
3X5 Button Head Screws (4)
3X6 Countersunk Screws (9)
3X8 Button Head Screws (8)
3X12 Countersunk Screws (2)
3X16 Grub Screws (4)
3X14 Button Head Screws (6)
3X16 Button Head Screws (4)
3X18 Button Head Screws (4)
M3 Nyloc Nuts (12)
4mm Spacers (8)
Key Info:
- Brand: Willspeed
- Part No: WFFXB2
- Fitment: Option Part
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