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"Gogarty" skrev i en meddelelse
...
In article
. com,
says...

Bein a physicist, I can sorta follow the various arguments
on this but
bein an engineer (a physicist/engineer is a serious
contradiction) I
know many of you are askin the wrong question.
In some cases, Yanmar for example, it has nothing to do
withj drag and
a lot to do with lubricating the tranny. I saw in print,
years ago,
that they actually reccomend putting it in reverse. I
always forget to
do this and have never done it in years of sailing and my
engine/tranny
is 20 yrs old.

My Furth transmission manual flatly states that the
transmission should
be locked in reverse when the engine is not running and
should not
freewheel. Lubrication.

I fully agree. My question on this subject came out of a
discussion with my brother in law - and we were just
wondering about the pure relation between speed when sailing
and the status of the propeller ...

Mine is always locked during sailing, but I was sort of
curious as to the 'cost of speed' ...

Based on the inputs on the subject, it is hard to know for
sure - isn't it?

--
Flemming Torp