Make a folder in your email program and drag all this
555 stuff over if you are interested.

I just had another idea that would broaden the dynamic range
of the amount of fuel injected. No need for staged injectors.
If it is too rich at idle lower the fuel pressure with a knob on mounted
on your fuel pressure regulator. Same goes for
not rich enough on the top end. Up the fuel pressure. Of course you
will have a fuel pressure gage on the instrument panel
won't you? This will also give you an emergency option if one
or more injectors stick.

Of course your primary
back up system will be merely a couple of small tubes (steel brake line)
plumbed to the intake pipes with a low pressure pump or gravity
feed fuel supply and a needle valve. Same as the Wright Brothers
more or less :) Set the throttle and adjust the needle valve
until the engine is running smoothly. If gravity feed the
engine will run if the electricity fails and you have a Revmaster
style of ignition.

Paul Lamar

Hi Paul,

There aren't any file attachment with your last mail, could you resend
please?

Regards,
Chidi
Sugar Land, TX


OK I did not send any with that message but if you are new this
will explain a lot.

http://www.rotaryeng.net/simple-cheap-555.html

Also here are some pictures of the required fuel pressure regulators.
You only need one.

Paul Lamar