Ducati Regulator Gilles 3
Why no failure ?
Many homebuilders may not experience regulator failures
There are two reasons :
- Many use but one tenth of the nominal power advertised by ROTAX.
- It takes 45 min for the regulator to reach its max temperature (thermal time constant on the order of 15 min)
Cooling
With a PC type fan, the regulator heat sink thermal resistance drops to about 0.5°C/W. At sea level and nominal output, the ambient temperature needs to stay below :
125 - 80×(0.5 + 0.3) = + 61°C
Much more reasonable.
See Gilles website:
http://contrails.free.fr/elec_ducati_en.php
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Full size:
300x258
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