Firstly, you typically wouldn't want to use standard batts as then you would be adding tons of weight. Hawker Odysee batts are very compact lightweight batteries. The supercharger weight is negligeable as you'd have roughly the same weight in any supercharger setup. I think the battery weight might add around 40-50 lbs total. As far as starter motor speed, I'm sure that the adapter is not just for mating the gear directly to the input shaft. It's probably using some sort of gear ratio to get the rpm difference needed. Torque sacrificed for speed would thusly fascilitate the need for 3 starter motors. Now I'm no engineer, (changed major to computer science instead) but the science sounds doable. I understand and agree with the weight loss factor, but don't forget that you are also not parasitic to the engine when running directly from the battery gaining a few precious extra horses which should compensate some for a little extra weight. As far as drag on the engine when the unit is not in use, I believe there is a gate involved to allow free flow around the unit when powered down. The way I compare this is as follows: Traditional uperchargers and turbos are obviously the pick of choice when available due to constant hp gains available all the time.
NOS is great when trying to save a few bucks on initial install or when an SC or turbo is not available. Unfortunately of course hp gains though substantial are available only in small doses, and excessive use gets expensive very quickly.
The electric SC as described by BOOSTHEAD is a good alternative between the two. Firstly, it's compatible with all types of engines like NOS. Secondly, it's longterm use (battery replacement excluded) costs you the same as a standard SC or turbo.
In summation, I'm not trying to say that there is anything better than a SC or turbo, but this is a good alternative if one is not available and you don't want to have to keep buying bottles of NOS when you want to have a heavy foot.
That's just my opinion, I could be wrong. <img src="/forums/images/graemlins/cheers.gif" alt="" />
