Paul, thought I would offer a graphical example of what Rick is talking about,
only applied to a V8. The image (click below) shows my 6" x 31/2" megaphone that
begins at the collector convergence point and extends rearward 43 inches. Great
tourqe, broader band, but if you look carefully you can see where I didn't do my
homework completely - the flame from the exhaust burned the rear "bumper"
honeycomb! Back to the drawing board here...........
http://albums.photopoint.com/j/View?u=1003326&a=7382870&p=40870943
Ed
Rick Byrnes wrote:
> Paul, you/we won't affect the tuned length of exhaust if a large pipe is
> down stream of the collector convergence point, and the megaphone if used.
> I will be using a 4" pipe exiting at the rear of the lakester. I don't
> believe that significant thrust is evident, but filling the vacuum left by
> the car with hot air has got to help. I remember doing the math several
> years ago that showed me the exhaust volume of the 4 banger didn't even come
> close to the volume of air needed for my coupe. Now, for a really small
> lakester/liner?????
> As several have said, It cant hurt. The only down side I see is engine bay
> heat.
> Since I have taken the time to write, does anyone have experience with
> optical flame sensors. I remember using them in the early 70's when I was
> involved with the Ford Gas turbine program, but till lately haven't given
> flame sensing a second thought.
>
> With a rear motor car, How do we know we are on fire or not?
> This could be a real problem. I remember Chris' story about chasing cars
> down the salt.
> I don't want to invent something, but rather would like to find a system
> sitting on someone's shelf.
>
> Rick Byrnes
> We have enough youth...........How about a fountain of smart
> www.rbmotorsports.com
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