Quote:
Originally Posted by cRiPpLe_rOoStEr
BMW was involved in a project targetting the usage of an electric starter motor bolted to turbochargers to make them "fill-up" faster.
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There are several problems with using a starter motor... they are brushed and well wear out quickly compared to alternator/brushless motors. High temperatures from the turbine housing will demagnetize the motor... high end rc car motors demagnetize around 240*f. That's internal not external temperature. One reason why you're not suppose to keep cranking your motor for too long. Turbos operate from 50-150 thousand rpm and good luck getting a 12.6 volt starter spinning close to add the necessary power. Not to mention the HP needed would put too much side load and could damage the bearings.
Not saying its impossible. But rather difficult to use existing systems. Probably needs a ground up design