Toymods Car Club Inc: Tech & Conversions => engine fan "VS" thermo (electric)

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oldcorollas
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Kita-Ku, Sapporo, Japan
Registered:
January 2003

Re: engine fan "VS" thermo (electric)	Thu, 04 November 2004 07:53

the thing with mechanical fans is.... as speed goes up, the power required to turn them increases by the square of RPM (or something like that ie non-linear) if your motor only turn to 4000, maybe it's not such an issue, but if it turns at 8000rpm.... at then one of the metal blades flies off and punctures your battery.... you start to appreciate elec fans basically, elec fans are at best advatage against an engine fan that has a solid centre and is attached to a high revving motor. a vicsous coupled fan will slip when the motor is spinning fast, and reduces the mechanical losses... if i had a choice, and revved to maybe.. 7000rpm.. (and i had the space) i'd go with a viscous coupled engine fan... if i was tight for space, or couldn't get a slippery centre fan in there, i'd use electric.. never using solid (metal) fans again Cya, Stewart ps, oh as for power gain, i noticed a large improvement, both in rate of engine revving, and also more power at top end.. but never dynoed it way back then.. [Report message to a moderator]

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