Cycle News

Cycle News Issue 14 April 10

Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles

Issue link: https://magazine.cyclenews.com/i/963756

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BRIDGESTONE BATTL AX ADVENTURE A41 PRODUCT TEST P122 "High-speed stability is abso- lutely crucial in the adventure/ on-road segment," says Francois. "We have achieved a better result in the A41 compared to the A40 by changing the tire tread pattern and the block design between the treads. This happens by the changes in the pattern but also by the block rigidity. The block design between the grooves is really im- portant for this tire." The Adventure A41 is con- structed using Bridgestone's MSB (Monospiral Belt Construction), with a stiffer case construction to aid in the high-speed stability desired by the engineers. The rear compound (and most of the fronts, save for 21-inch tires, for example) uses a Cap and Base design. That allows for the harder center compound to be run underneath the softer side compounds, thus giving the carcass extra stiff- ness, more rigidity and better stability when braking and cornering. This allows the softer compound to flex, bend and grip to the road and trial conditions, resulting in a five-percent-larger contact patch. Wet weather performance was also improved, with Bridgestone claiming an eight-percent-faster lap time around their wet testing facility in Rome, Italy. Unfor- tunately for us, this was an area we simply couldn't test in the arid, near Martian landscape of Morocco, the one of the most northern points of Africa. Q u i c k Te s t s i n Pa r a d i s e Not often in any westerner's life do they get the op- portunity to ride the motorcycle in Morocco, so we jumped at the chance to put the new A41s through their paces in a land seemingly built for them. Here you can see Bridgestone's Monospiral Belt Construction (in blue) for the A41. The A41 was a good companion for the big GS, offering excellent braking and high speed stability on Ouarzazate's albeit excellent (when tarred) roads.

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