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Gallons Per Hour Estimates Needed ASAP

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Old 03-31-2004, 05:17 AM
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Around 3000-3200 rpm seems to be the best for max MPG and hence miles per tankful. This seems to be where the hull and engine are at their best/most efficient. You'll have to check your boat to see what mph that equals.
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Old 03-31-2004, 05:40 AM
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in three weeks are you nuts???its cold and rough till july up there!! is this for fun or to move the boat? If you just need to move the boat rent a dually and pull it!!
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Old 03-31-2004, 06:07 AM
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most planning hulls are efficient in the low to mid 40mph range. Assuming that happens in your boat in the 3000 to 3500 range, with no positive tab and no throttling for rough water, you should burn 24 to 30 gal ( combined ) per hour.
 
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Old 03-31-2004, 01:20 PM
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There is a formula for horse power from gas that aviation uses. I don't recall it, but contact Jafo here on the board, and I'm sure he knows it. It should also work for all engines.
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Old 03-31-2004, 04:28 PM
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That trip is a little dangerous this time of the year. Water temps will still be in the 30's up north. Fog is a problem even on nice days with the cold water. I would take dry suits along just in case you end up in the water. It'll kill you in minutes otherwise. Are you sure you don't just want to tow it on a trailer? Pay for the diesel and I'll give you a hand.
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Old 03-31-2004, 05:00 PM
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my best guess is

1) fill tank before leaving
2) run till about empty
3) pull in some where and fill tank again
4) repeat steps 2 and 3 until trip is completed.
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Old 03-31-2004, 06:05 PM
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Quote:
Originally posted by Chart
There is a formula for horse power from gas that aviation uses. I don't recall it, but contact Jafo here on the board, and I'm sure he knows it. It should also work for all engines.
For most gas engines the rough rule of thumb is 7.5 gal. per hour for every 100 hp at 80 % of throttle cruise. That should add to the confusion

My experience with moderately powered twins in V bottoms, when the trip is over you'll have used just about 1 gallon for every point to point mile you supposedly went, if you were paying REAL attention. Ever looked at the past track lines at the end of the day on the gps ? At least if you've been drinking you'd have an excuse.
 
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Old 03-31-2004, 06:56 PM
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Quote:
Originally posted by WickedWon

My experience with moderately powered twins in V bottoms,D


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Old 03-31-2004, 07:16 PM
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If youy've got EFI engines the controller outputs GPH burned. You can get the data from a SCAN tool. Probably not much help at this point but a way to get data in future.

Check RINDA Technologies web site--

http://216.230.203.183/home.html
http://216.230.203.183/marine/mtspec.htm

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Old 03-31-2004, 07:57 PM
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Quote:
Originally posted by Nauti Kitty
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