Andy and Greg

Thanks for the great link on How Stuff Works:

I clipped this bit out:

Diesel fuel has a higher energy density than gasoline. On average, 1 gallon (3.8 L) of diesel fuel contains approximately 155x106 joules (147,000 BTU), while 1 gallon of gasoline contains 132x106 joules (125,000 BTU). This, combined with the improved efficiency of diesel engines, explains why diesel engines get better mileage than equivalent gasoline engines.

Notice the term: “Energy Density”

I was using this concept in this thread about etherless fuel to illustrate the idea of lowering the ED of a fuel in hopes of matching the fuel metering system to a higher ED fuel. I do believe that Greg did not agree with the concept of energy density. I hope this clarifies this concept.

One more thing: I noticed this week an advertisement for a DDD head for the OS 1.60 engine. In the advertisement it showed and talked about a plastic venture reducer installed into the carb to make the required adjustments to the higher ED fuel. I do believe the mag was “RC Flyer”. The reducer looks like it made the intake about 30 percent smaller.

I do think this sort of reducer would be helpful to converted engine like the nice little Norvel .074

Have fun,

Kelly