I have a fairly decent grasp on the laws of physics, and
all I can see from all these posts is that Rara has a
pretty good grasp too. You maybe need to study this stuff
better before you waste alot of money on your prototypes.
First of all, a starter motor doesn't come anywhere near
even close to 10 hp. The only reason it can turn an engine
over is because it is gear reducted (ie. big flywheel vs.
tiny starter gear). If you were to gear it the other way
to try and turn a compressor impeller the speed necessary
to feed an engine running at 5000rpms with 4psi say, I
don't even think the starter would barely turn over (the
vacuum from the engine's intake across the impeller would
probably help the starter turn a little). I don't even think
you could get .001 psi at 5000rpm with a typical starter motor
off a car. A guy I know has slow-acting hydralics on his
Impala (not even fast acting mind you), and he requires 6
Optima batteries in the trunk to run just 2 motors and they
don't last very long at all. You are going to find that
electricity is not very efficient for trying to run
compressors. Do you know how hard it is to even turn a
compressor by hand? I have a customer that we put a Paxton
supercharger kit on his truck a while back, and when you
take the belt off it and try to turn the pulley with your
hand, it is VERY hard to turn. You cannot even make it
spin by it self (you'd have to mount a huge flywheel to it to
make it do that). You are going to find that you are
trying to accomplish the unsolvable task doing this on a
backyard budget. Believe that Ford, Chevy, Chrysler,
Kenworth, Peterbuilt, John Deere, Case, Caterpillar, and
others have experimented with this idea for years, and
who knows,
maybe in 10-20 years they will be able to make this
workable, but don't hold your breathe. I'm not trying to
discourage you, I'm only trying to save you $$$. You don't
think people have tried this crap for years? People have
tried every way to convert the engine's byproduct energy or
other engine energy into power and so far, turbo and
blower is the best that's out.
Here, read this:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2426797798&category=33742
and this:
http://www.bamaclassifieds.com/ebay/warning.htm
And check this out:
eBay search page
and
http://www.electricsupercharger.com (haha)
Those are all the current scams out because this topic of
electric superchargers is such an easily convincible
subject, because at first quick thought it
sounds 'feasible' but if it REALLY was then don't you
suppose the professional racers (with millions of dollars in
sponser money mind you) and the automakers would be in on this too? Trust
me, this is not just some well kept secret. There's just
too much efficiency loss, and high-powered electric motors
are really HEAVY. Why not just use a pulley/belt and a
shaft (ie. Vortec) to get the power directly and avoid all the heat losses from
electron movement (not to mention the weight from motors and batteries)
, or use the 'free' exhaust gases (heat energy) that the
motor just throws away anyways and convert that to usable
energy (ie. conventional methods)??
By the way, I had your same idea when I was like 18-19 years
old and it DOES sure sound like a good idea on paper, but it just can't
work with today's technology. Wouldn't you just rather work
extra hard for a summer and then just buy the complete turbo
kit? Sounds much easier to me than trying to defy the laws of physics