John;
The Speed Beeder is a very simple 'ball and spring' one-way check valve. No vacuum needed. Regular bleeders are just tubes that let anything (fluid or air) flow just as easily any either direction. That's why normal bleeding takes 2 people. One of them has to be at the nipple to shut it before air gets sucked back into the system. The Speed Bleeder, on the other hand, has a ball inside it held by a spring. As you pump the brakes, the ball is pushed out of the way and allows brake fluid to pass. When you stop pumping and pressure in the system drops, the ball is slammed back into its seat by the spring, preventing air from getting in. I also run some plumbers teflon tape around each bleeder to ensure a good seal.
Seriously, the biggest hassle is having to get in and out of the car to loosen each caliper in turn.
Here's the sequence
1. You make sure that the reservoir is full, loosen one Speed Bleeder (the other 3 are tight) and get in the driver's seat.
2. Pump the brakes normally. The brake pedal will feel weird because you don't build very much system pressure (As a matter of fact, the brake pedal will about hit the floor on every stroke.)You don't really need to pump as vigorously as you would in a normal 2 man bleeding job. All you are doing is moving fluid through the system and hopefully carrying all the air with it. Be very careful that in your desire to build system pressure (which you won't be able to) you don't pump the reservoir dry, because you'll end up having to do the whole thing over, having sucked air in through the top. If you listen carefully, you'll hear fluid squirting into the can. When air is in the fluid, it'll make a distinctive sound and on inspection, the fluid in your coffee can will look foamy. Once the fluid is running clear, it'll make almost no noise and the foam will be gone.
3. Now tighten bleeder #1, top off the the fluid and go do the same for bleeder #2... etc. And round and round the car you go.
You will, in the course of bleeding, do about 12 (or more) laps around the car. Cheap entertainment for the neighbors who are already convinced that your are 'not quite right in the head'
Good luck! Once you get the hang of your Speed Bleeders you'll wonder what you ever did without them!