I haven't decided on running an alternator in my R8 yet. Installing an engine from a Renault 17tl and there aren't room for the alternator without cutting some metal. Could move the alternator to the other end of the engine and drive it of the fan/crankshaft pulley though. But since this is a rallycrosscar it runs only a few minutes each heat. And therefore I am thinking of running it without an alternator. My question is if it is possible to calculate which battery capacity I need. Thinking of using a 30ah 450cca mc-battery. My biggest concern is the 2 small cooling fans I am going to use. Haven't had a problem running without alternator on other cars before, but that was with a beltdriven cooling fan, and a normal car battery.
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