Greg,

Yes, You are correct, there is no butterfly valve, my mistake. Thank you. You adjust engine speed in a normal diesel engine by direct control the fuel pump.

Energy Density in my discussion is somewhat my idea of a way to illustrate the concept of the amount of energy within a give volume of fuel.

Density is normally defined as mass/volume or in some cases weight/volume. Since we are working with the concept of Potential Energy stored within a fuel I choose to use the BTU/volume idea. I hope this was not confusing. It is not exactly correct, but it allows me to get the concept of how much energy is available within a specific fuel. Mass density does vary a great deal and this is the factor that I feel will help other blend a mixture that will match various engines. I have somewhat blurred the concept it appears.

Agreed, HP is depended upon CR. If I remember right if you increase CR by 10% you can expect a 10% increase in power and a 20% increase in heat. This assumes that the engine will handle these increases? Exactly right we get a bunch of power out of the little model engines. I’ve always wondered if this increase is due to the fact that most of the time we increase the diameter of the prop with the use of a diesel engine. Since a very small increase in prop diameter will make a large increase in thrust.

HP maybe lower in a diesel, but torque is larger. Since the RPM is lower the HP is lower, but a large prop indicates that an increase in torque was achieve. Much like the idea of a tractor using larger traction wheels in the farm fields.

I can’t address you last question since I don’t understand exactly your drift. Perhaps you could re-phrase this question and I’ll try again.

Thanks for catching my error with regard to the throttle valve. That was a dumb mistake.

Tell us about your success using “no ether fuel” please. Have you had any luck?

Regard,

Kelly