Manual

94
WARN ING:
RAR E EART H M AGN ETS ARE EAS I LY D AM AG ED AND TH E
PEEN IN G P RO C ES S (O R LO CATIO N BY G RUB S C REWS ETC)
SHOULD BE VERY CAREFULLY CARRIED OUT SO AS NOT TO
DAMAGE THE MAGNETS . IF DAMAGED THEY WILL NOT HAVE
S UFFICIENT M AGN ETIC S TRENGT H O R M AY FAIL
MAGN ET ICALLY O R PH YS ICALLY AFT ER A P ERIO D O F TIM E.
IF INSTALLED CORRECTLY THE MAGNETS WILL HAVE A LONG
LIFE.
Note: In the following examp les, for ease of reference, the magnets are shown
mounted on the circumference of a wheel with the Haltech Hall effect sensor
oriented to one side. If so mounted the magnets need to be mounted with
sufficient strength to resist centrifugal force. In p ractice the magnets are often
mounted within the circumference of the wheel and the sensor is mounted so
that its base is p ointed towards the magnets in the face of the wheel.
Ty pica l s e t-ups - S3
4 cylinder / 2 rotor engine
For a four cylinder 2 magnets are required in total, positioned exactly 180° apart.
Figure 1: Typical 4 cylinder/ 2 rotor application