David Roe wrote:

Hi Paul

I'm assuming that everyone is familiar with Tracy's dynamic chamber design
and set up. I know that he's really, really busy and didn't want to bother
him, as the less that he is disturbed, the sooner i might get my EC2 and
PSRU.

My question regards the way that he has the throat of his air valves
situated over the chambers of the Dynamic chamber. He doesn't fully
dedicated one air valve/venturi to each chamber of the dynamic
chamber.Rather, they seem to bleed into each other. Is this desireable? or
does it even matter?

Good question. I think one would have to have it on a dyno to find out. PL

I'm fabricating an aluminum version of his set up, and am a bit undecided
about the placement of my airvalve unit (modified stock unit). Any insight
from some bigger brains would be appreciated.

I would copy Tracy's exactly for now if you want to go with a dynamic chamber.
If not you could bring all four (or six for a six port) 20-24 inch  pipes out to 
a large pleneum just like the Power Sport manifold. Simpler and easier to tune with.
Here is a picture of Terry Adams version. PL

thanks
David Roe / Hummel Bird / 13B for next project
roester@cybermesa.com

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