Harbin Osteen wrote:
Snip.....


Biodiesel is just replacing one type of emission with another - and it
takes a lot of power to harvest/process the stuff. For these types of
purposes, there is an ancient form of power, called human power.

Snip....

Yes, it does replace one emmission with another, but it is at least
a closed carbon cycle. You take up carbon when you grow the
crop (and my prefered crop is alge, which will double in 24 to
48 hours) and relese it when burned in combustion.
Human power is great, but not for everything, just as the
diesel bike is not good for everything, but fills a nitch that
could be useful to some.

Okay - fair enough - biodiesel and powered equipment has its uses. My
point was that, although crossposted to many groups, the initial point
was a biodiesel motorbike onboard a cruising sailboat, which I think is
impractical, un-neseccary, and better tools exist to do that particular
job, ie human power. Biodiesel is a good replacement for fossil fuel,
but it does have environmental costs.