I have other things on my truck that I am working on right now... but I'll keep it
in mind. I'd like to give it a try. Can't hurt anything except my wallet, but
that's what I bought the dak for anyway ;)......
Jeff Durling
'96 RC Sport
Bernd D. Ratsch wrote:
> I thought that same thing at first...since I now have one on my truck, it
> really doesn't interrupt the airflow at all...performance is the same with
> it ON (and not operational) as with it OFF the truck.
>
> The variable flow is also a question I had asked Mark Kibort (part owner of
> eRacing) but the boost level would be too low and would also burn the motor
> out quicker than with it only operating at WOT. (Average lifespan is about
> 60K miles + or - 10,000.)
>
> I'l be at the Austin meet this weekend with the eRam installed if anyone is
> interested to take a look and see what it does.
>
> Bernd
>
> At 04:04 PM 07/14/1999 -0400, you wrote:
> >My question is this. Wouldn't the e-ram when the vehicle is not at wot
> restrict
> >airflow? I've seen the pics on the web page and the fan blades are large
> and it
> >seens that it would restrict airflow. It seems you would start reducing the
> >airflow back towards the point of the stock air intake. It seems that the
> e-ram
> >would work better if it was a variable device that accelerated as the vehicle
> >accelerated. When the throttle body opens up more the e-ram speeds up
> therefore
> >pushing more air at the appropriate times, not just at wot. I like the
> idea and
> >have been very curious but was wondering about this. Not flaming or
> discounting
> >the idea just covering all of the bases.
> >
> >Jeff Durling
> >'96 RC Sport
> >
> >Bernd D. Ratsch wrote:
> >
> >> Since we've all been talking about RamAIR, Cool Air Systems, etc...here's
> >> something interesting for you all....
> >>
> >> Just let them know of the basic formula for ram air. It is little known and
> >> generally misunderstood.
> >>
> >> Max ram at 80 mph is .08psi. max ram at 180 mph is .4psi (thats point 4
> >> psi !!) This is with a 75% efficient inlet like on a dragster, that you
> >> would never have with your daily truck/car. (Try 25 to 50% , best
> >> case!!)
> >>
> >> You can't get around physics, everyone tries. Anyway, this is right out of
> >> Carroll Smith's "Tune to Win" racing book, as well as a basic known fact in
> >> aerodynamics. (kind of easy to calculate.)
> >>
> >> No matter what the shape of the inlet , (funnel, scoop, horn, etc) it
> >> doesn't matter, ram just does not exist for our cars.
> >>
> >> This is where the eRAM comes into play. It just takes unused electrical
> >energy
> >> in the battery, and creates a 200 mph ram air system (at WOT).
> >>
> >> Ps . here is the formula for ram potential:
> >> Air Density in lbs per cubic foot
> >> X Velocity in feet per sec squared divided by 288X32.2 (all times the
> >> efficiency factor)
> >>
> >> Group buy anyone??? ;)
> >>
> >> Bernd
> >
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