Originally posted by JonsZX2SR:
I have worked with aerodynamicists who have shown me that the best leading edge for subsonic flow is a complex curve, not a knife edge. A knife edge only has an advantage when it disappates the shock wave originating during transonic flow. If you have transonic flow in your TB you have an awesome engine. (sarcasm...)
The leading edge of the TB isn't an open-air leading edge, which is my point. The knife edge better transitions from the silicone or rubber adapter. Knife-edge makes the more gradual transition...
Your missed my point entirely about shaping the edge of the throttle plate so I got a good transition at 'tip-in' (throttle is just cracked above idle.) Only optimizing airflow at full throttle is not the best way to get driveability.
No, I didn't miss it. In fact, I agreed with it. Read it again...
Anyway I built it, it has been flow tested and it works. Quit complaining.
Not complaining, until now. I said good work in fact. I was just pointing out what I could see as an area for improvement. You also mentioned you didn't build it, so now I'll complain about that...
I have been doing engineering a lot longer than you have... You need to go back to school...
Nope, not an engineer, I live in the school of life. No need to start questioning inteligence or backgrounds, but since you mentioned it... I can bet I've been hot rodding longer than you, how's 25 out of my 30 years? I've been snowmobile racing, motorcycle racing, car racing, flow bench testing, field testing, building, rebuilding, machining, etc since the age of 5. You mentioned people showed you the airflow characteristics, someone else did the machine work. Why waste our time with you, the middleman. Ask your friends to come join this conversation so that we might get some use out of it instead of squabbling about.
EDIT: I forgot to mention the air over a golf ball comment. The internal coated surfaces of a jet engine are in the portion of the engine that contain heat, fuel, and air, which all flow much differently than air alone through a throttle body. The surface of a golf ball, I'm sure you know, contains small circular divits to reduce air flow drag. Put similar divits in a TB, intake manifold, head ports, you get reduced air drag. Those things you can't do to an air/fuel/heat mixture, such as in a jet engine, because you'll get things like hot spots, fuel puddling... I'm sure you could name more reasons why you wouldn't want it... name one why we wouldn't in our "dry" intakes???
