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Old 11-03-2013, 06:14 PM   #13
Miss Donna
Veteran Member
 
City: ChicagoIL home, orange Beach, AL now
Country: USA
Vessel Name: Miss Donna
Vessel Model: Chris craft constellation
Join Date: Nov 2013
Posts: 52
Hello Pete, and all members.
I am the skipper of Miss Donna, the test boat for freewheeling.
After freewheeling for 180 miles I topped off with 160 gallons. Giving me 1.125 mpg. 1400 rpm getting me 9knt's. I was hoping for better, however I am traveling on the ten tom with barges to pass, locks to navigate and of course varying depths and currents. Which is nice to have the option to fire up the other engine underway. Dormant tranny stays cool around 102 degrees. The only reason it is that warm is from ambient temps from the engine from occasionally running it. Also I ran from my saddle tanks that do not receive the unused fuel.
Keep in mind I am doing this to conserve fuel and also keep the engine running at recommended temps.
Does anybody have any idea how much fuel is returned? I would imagine a true mpg test would be running from the stern tanks which receive the unused fuel.
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