In 1966, Pierre Rensonnet creates PreciRay, an engine that allows you to adjust bike wheels within a revolutionary short time. He gets the gold medal at Lepine Contest the same year (patent 672.210).

PreciRay-B is quickly improved and Pierre Rensonnet expands his method of wheels centring to motos with PreciRay-M.

While searching for a workshop to build a part of PreciRay, he meets Albert Antoine, interested in building PreciRay in its whole, and so becoming exclusive constructor.

Success is immediate : professionals quickly understand how much time they could win. It's immediately in great request for most famous cycle teams, constructors, repairers, schools and resellers. One can see it in every international specialised trade fair and orders come soon. PreciRay is present on five continents and in 68 countries. Reseller's network grows firm.

PreciRay is now known as a part of indispensable elementary equipment for 2 wheels professionals. The fineness of its functioning is teached in specialised schools.

Obviously, it has been copied and so called improved, but no material answers as much to wills of professionals as PreciRay for its simplicity of use. PreciRay is completely mechanical, without any electric or electronic part, as its lasting is so quite unlimited. It weights 25 kg and can be easily moved.

In 2002, PreciRay enters the Web. Not anybody does visit fairs and such a tool should be accessed by any cyclist, from amateur to professional. Many still do without but, as Pierre Rensonnet says : "Working without is losing one's time".

Le PreciRay - M. Rensonnet - M. Demardi - M. Goffin (VAR) -
Mike Kluge - M. Orth