Fuel Economy...

Airslot

Airslot

God
Subject boat:  1987 Wellcraft V-20 w/ a 1988 Merc 150
Tests were done with full fuel and normal fishihng gear.
TabTestDay009.jpg

TabTestDay011.jpg

TabTestDay012.jpg

The last pic was snapped a hair early,  Shew went to 42.3 mph and 15.6 gph

Rpm's were 3800 in first shot
Rpm's were 5550 in last shot.
I think Rpm's were 4500 in middle shot.

Airslot
 
Those numbers look real good. What RPM's for each? Almost 3.7mpg @ 26mph...I wish my 200EFI got that good. Not sure what I'm getting, don't think I want to know. :-/
 
Airslot, what prop are you running? I've got an 83 cuddy with a 94 150 mariner. My top end is 35 mph @ 5400 rpm and 2.8 mpg @ 4000 to 4250rpm.
 
The prop is a Quicksilver Stainless 17p x 14.75"D. Also, those numbers were trimmed up pretty high. Wide open she was suckin ducks.

Airslot
 
Slot, I second the mounting job - nice work!! I would love to have one of those, but who needs one when friends like you can tell us the numbers.... ;D

Nice work!

Blue
 
Thanks guys. Maybe I'll document the mount. It took two weeks of thought, $10, and 30 minutes to build. I think it's a great place to mount anything as its wasted space.

Airslot
 
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