Paul,
Here are some pics of the plenum. I have several holes in it resolving
clearance issues.
The MAF sensor is included and the whole thing has covers and is removable.
Fitting
the injectors is hard on the injectors as i will need new o rings and one of the
plastic rings at the top came off.
Joe Berki.
Does the air have to make a 180 degree turn?
Paul Lamar
Paul,
The air actually does a 180 from the scoop to the plenum, Tried to expand it from the
inlet to the plenum. It then goes through the MAF and does a 180 to the intake
runners. There is no space on this side and the augmenter does not permit going over
the top. I am not counting on ram air and the engine is pulling a vacuum. Am I
missing something?
Joe Berki
Do you have space to go out to the wing root?
Paul Lamar
Paul,
The plenum is in the wing root
Joe Berki
BTW I dumped the AT89C52xx. I got this really expensive AVR AT development board from
DigiKey and the AVR FLIP programming software won't run on Windows 7. It came with a
Keil C compiler that has no PDF docs. The Keil C IDE works well however but I am not
using C. Support from AVR on this board is zilch. Support from Keil is zilch as well.
It is taking too long to solve problems. Mikro is behind the times on the 80C51xx parts.
I will use the ZBASIC board. I have had excellent support from Don Kinser the owner
and chief programmer in the past. They are in my time zone as well. ZBASIC compiler
works well, is fast and the ZBASIC supports sending data out the USB port.
I have solved the problems using the injector PWM in ZBASIC software with a bit of
hardware. Prior to this if you were generating a pulse width using a timer the
interrupts were all disabled. That is unacceptable. Since the required injector
pulse width is about 7 ms at 8000 RPM and it takes 8 ms to rotate the engine once the
processor has no time for anything else like sending data to the tablet. Same goes
for using the timers to measure RPM. The analog tach simply solves that proplem. I
have this ZBASIC board and I am going to use the second attached ZBASIC lower cost
board for production. I will also use a hardware real time clock. Another trick for
off loading the interrupts.
Hello Don, Here is a real old pdf on a system I did in 1979 for your amusement :)
Paul Lamar
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