Motorcycle Mojo – July 2019

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56 MOTORCYCLE MOJO JULY 2019

UNOBTAINIUM VANDERHEIDE V4


wanted to include all the ‘front-end feel’


options to give people the opportunity


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Overheating Potential


Another piece of innovation, this time


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as the Saxon Triumph I used to race, is


the rear-mounted radiator positioned


under the seat. The rad cools via ducting


incorporated in the monocoque, which


allows the engine to be positioned


further forward in the 1,440 mm


wheelbase than would be possible with


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a 51.5/48.5 per cent forward bias for


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full street equipment, which includes


twin 320 mm Brembo front discs with


radially-mounted four-piston Brembo


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disc with a two-piston caliper). But


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a similar rear-mounted radiator, the


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dispose of the hot air.


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cooling design needed to be recon-


sidered; when I came to ride Rolf’s


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the potent Aprilia engine to overheat if


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was with a secondary coolant radiator


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needed here – but, according to Sjors,


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since my ride by simply changing to


another product.


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standard, Euro 4-compliant 201 hp


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wiring loom, engine control unit,


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catalyst and an APRC electronics


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digital throttle, which offers three


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selectable via a switch on the left


handlebar – and eight-level Aprilia


traction control plus three-stage


anti-wheelie control. Emissions weren’t


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failed its Euro 4 examination. Why so?


“It’s stupid,” says Rolf – and it really


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for 2016, and we prepared everything


according to 2015 rules, which we


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a solution, and will re-test it to get it


homologated.” (It’s now homologated


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25 replicas they plan to construct of


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complete freedom of choice for purchas-


ers of colour and trim – including the


leather seat cover and matching leather


handlebar grips. Buyers also have the


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version of the Aprilia engine, which the


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to provide.


Having spent three days beside


each other at Goodwood 2016 and after


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rewarding and an honour.


Finally, the Test Ride


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subconsciously it’s going to feel wide


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the complete opposite of what awaits


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compact, and while the seat positions


you quite high up at 830 mm, you feel


ensconced within it rather than perched


on top, and this helps you feel at one


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not overly high footrests were perfectly


positioned for my 5’10” stature, and the


fact that the monocoque isn’t too wide


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I could put both feet on the ground


at rest. The brothers insist that each


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purchaser.


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cross-section handlebar is clamped to a


strut running forward from the upper


wishbone pivot and gives a slightly


leaned-forward sporting stance that


isn’t tiring. It just feels natural, without


excessive weight on your arms and

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