hmmm, if we say that the model plane engine produces 1/20 hp (which is much
less than 1/8 hp) then by my calc. it is producing 0.05 hp/0.01 cu. in. = 5
hp/cu. in. !! Say...that's pretty good! Now, if only I could get my 455 cu.
in. to spin at 20,000 rpm...
:-)
b-
At 9:12 PM 10/5/98, James Barrett wrote:
>Folks,
> I have a tiny .01 cubic inch 2 cycle model airplane
>motor that runs on nitro glow fuel. It has a 1/2" or shorter rod.
>Even at 20,000 rpm it puts out much less than 1/8 HP.
>I have also seen a diesel boat motor with 6 foot long rods
>that puts out over 2000 HP at less than 1000 RPM. It runs
>on bunker fuel.
> Given the above information I can conclude:
>
> 1. Longer rods make more horsepower.
>
> 2. Bunker fuel makes more horse power than nitro.
>
> 3. Lower RPM makes more horsepower.
>
> 4. Boats make more horsepower than airplanes.
>
> 5. Both motors were 2 cycle, so no conclusion could
> be reached about 2 verses 4 cycle.
>
> I hope this information clears up the confusion about
>short and long rods and provides some insight into other
>misconceptions related to RPM, fuel etc.
>
> Just trying to help ;-)
>
>
>
>
>
>
>James Barrett Tiger II 351C and others
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