It was the dropper submit that hogged the headlines following Matej Mohorič’s victory at Milan-San Remo, however Cyclingnews has since uncovered one other secret tech trick that helped his decisive assault on the vertiginous descent from the Poggio onto the Through Roma.
The Slovenian nationwide highway champion additionally used enlarged disc brake rotors to optimise his braking.
Whereas he’d have ordinarily run a 160mm Shimano rotor on the entrance wheel, this time he went as much as 180mm, which is simply too huge for a lot of normal highway frames and past the really helpful measurement for the Merida Scultura Crew on which he raced. Nevertheless, he thought of it so vital to his success that he ordered his bike to be fitted with particular adapters to permit for the enlarged rotors.
On nearer inspection, Mohorič used a 180mm Shimano XTR disc rotor on the entrance wheel and a 160mm rotor on the rear. That is 20mm bigger than the extra frequent configuration of 160mm on the entrance and 140mm on the rear, whereas some riders go for the smallest and lightest 140mm possibility at every finish.
The advantages of the enlarged rotors are two-fold; a rise in rotor warmth administration beneath heavy braking and higher braking energy.
A 180mm rotor has 13 per cent extra braking floor space than that of a 160mm rotor and, when braking, the kinetic power is reworked into warmth. Having a bigger space to dissipate this warmth means much less warmth build-up and in flip, extra constant efficiency. On such a brief descent it is unlikely that this was Mohorič’s fundamental motivator; the rise in stopping energy would have been the first motive.
Fundamental physics tells us that greater rotors imply extra leverage performing on the wheel, which in flip means extra stopping energy for a similar enter utilized on the brake lever. This enhance in braking energy would theoretically enable Mohorič to decelerate sooner, permitting him to brake later into corners, sustaining his descending pace for a fraction of a second longer earlier than every flip.
Mohorič reportedly educated on the descent of the Poggio quite a few occasions to check his particular set-up, with Bahrain Victorious even contemplating asking native police to shut the highway so he might trip at race pace. That concept was scrapped however it’s clear Mohorič and Bahrain Victorious checked out each element to maximise a marginal achieve.
The delicate disc rotor modification flew beneath the radar as Mohorič pointed to his dropper submit – which allowed him to descend in a extra aerodynamic and managed style – when he crossed the road alone on the Through Roma, earlier than singing its praises to the press past the end line.
It was simply certainly one of a sequence of hacks that Mohorič thought up as he drew up his plans for Milan-San Remo success. So as to use an ordinary spherical dropper submit, he had to make use of Merida’s Scultura, which is a climber’s bike, moderately than the Reacto aero bike which has an aero-shaped seat submit. The Reacto would have accepted the enlarged rotor however the Scultura has a most disc capability of 160mm, therefore the necessity to match the adaptors.
There was no Scultura painted in Slovenian colors to match Mohorič nationwide champion’s jersey, however he was joyful to trip on team-issue paint so as to have the dropper submit. The bigger rotors had been undoubtedly extra delicate, however in addition they performed their very own half within the historic victory.