Paul,
A better mass air sensor to use is the unit found in ford V8 trucks
from 97 and up. Many of them in salvage yards. They were for engines of
220 to 260 hp putting them in the flow range we need. Also very light
and reliable. Just don't get one from the supercharged trucks, as they
are 90mm diam. Larry
Thanks for the tip Larry. Are they mechanical like the Mazda or
electronic? The electronic are harder to use as they are tougher to
interface with the 555. The Mazda unit is just a trap door connected to
a pot.
--
Paul Lamar ...No rotor no motor.
Paul,
Pin out attached.
Larry
The problem is 5 volts is high airflow and the 555 fed 5 volts would be
narrow pulse. Zero volts would be a wide pulse out of the 555. What you
one must do is come up with a circuit that reverses that and probably
increases it to 12 volts. Using the Mazda simple device you just wire
the pot backwards.
I am not saying it can't be done. Just more trouble.
--
Paul Lamar ...No rotor no motor.
I would call such a circuit an op-amp. Inversion and scaling in one
step.
Bob W.
--
N93BD - Rotary Powered BD-4 -
http://www.bob-white.com
3.8 Hours Total Time and holding
Cables for your rotary installation -
http://roblinstores.com/cables/
Sounds like you are the man for the job Bob. Care to do a schematic and
make a prototype on a plug board?
Here is what the Mazda unit would look like along with the original
Chaparral 2D ram air box from 1965.
--
Paul Lamar ...No rotor no motor.
The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site.
http://www.rotaryeng.net
Youtube key word UTUBPLEASE
Copyright 1998-2008 All world wide rights reserved.
