"Andrew E. Mileski" wrote: > > > David Zucker wrote: > > > > Can anyone give me the specifcs on the legal size battery for an F3B Contest. 500 >CCA? > > 5.3.2.2 Launching > > c) The power source shall be a 12-volt lead/acid battery. The maximum cold > cranking ampere capacity should be not more than > > 275 Amperes DIN, or > 310 Amperes IEC, or > 460 Amperes SAE, or <-- North America > 455 Amperes EN.
OOPS! That was the 2001 rules, which seem to have been changed. a) The winch shall be fitted with a single starter motor. The drum must have a fixed diameter and the width between winch drum flanges shall be 75 mm minimum. The power source shall be a 12 volt lead/acid battery. The cold cranking capability of the winch battery must be specified according to one of the following standards: 300 amperes max. according to DIN 43539-02 (30s/9V at 18 OC). 355 amperes max. according to IEC/CEI 95-1 (60s/8,4V at 18 OC). 500 amperes max. according to SAE J537, 30s Test (30s/7,2V at 0 OF). 495 amperes max. according to EN 60095-1 (10s/7.5V at 18 OC). So yes, 500 CCA in North America (SAE) Sorry for the misinforation :( -- Andrew E. Mileski Ottawa, Canada RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
