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The Ercolina DOPPIA FORZA is used by Rezac, De Bertolis, now also Magnificat, and some other top athletes.
It is equipped with the same belt transmission like a normal Ercolina, and the same braking system with magnets, but the flywheel connected to the shaft have 3 times the inertial moment of the normal Ercolina machine. This is because heavier and bigger athletes need a different machine response.
On the snow if an athlete weight 65kg, there is a certain amount of force applied to the poles to proceed forward due to the formula Force = Mass x Acceleration, In the case the athlete weight 88kg the Force applied to the poles is greater due to the fact the mass of the athlete is bigger. So it is logic that if you want to have the same feeling for two different athletes (65kgs and 88kgs) you must have different machines.
Practically the effect of the Ercolina DOPPIA FORZA (this for athletes of any weight) is comparable to the slow rollers skiis effect. You know than when you use very slow rollerskis, for an hour or so, then just after you change and go on fast rollerskis, the effect is that you literally fly with fast Rollerskis. That is the same with the DOPPIA FORZA and the normal Ercolina.
Use the DOPPIA FORZA first for few minutes, and then when you use the normal Ercolina just after that it seem like the normal Ercolina… is for children. The difference is due to the bigger inertial response of the flywheel.
There can be other considerations, about positive effects of the DOPPIA FORZA, for example, due to the bigger inertia the machine it is harder to accelerate: so it is good to use it also if you want to train your capacity to accelerate. You know that to win races final acceleration is very important, but also acceleration during the race is important to fill a gap and stay “on the wheel”, or to make a gap between you and the group so that they do not stay “on your wheel”.
The price of this new Ercolina DOPPIA FORZA is 125 euro more than the normal Ercolina because the main shafts are longer, there is another flywheel at the other end of each shaft, each one big flywheel have its own protection, and also the frames of the 2 sides is different.
Det kan installeres både inne og ute på en vegg med to ekspansjonsplugger eller med personlig tilpassede braketter. Lav vekt og små dimensjoner gjør det enkelt å transportere, og det kan også fraktes i bag’en som kan bestilles.
TEKNISKE DATA - størelse 53 cm (74 max) x 23cm x 22 cm. Vekt: 10,7 kilo.
Fabrikanten kan endre tekniske data og andre detaljer for å forbedre kvaliteten på produktet.