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Old 06-06-2006, 02:17 PM   #1
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Nice Rear

Spotted this at Cobbs today on a Fountain
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Old 06-06-2006, 02:18 PM   #2
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Old 06-06-2006, 02:24 PM   #3
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Sexy!

What do those bits of stainless pipe running alont the top of the shaft housing and then vertically do? - swim plaform washers??
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Old 06-06-2006, 02:54 PM   #4
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Looks like pipes to force exhaust ventilate the propellers.
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Old 06-06-2006, 04:19 PM   #5
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Yes, now you say that I can see that they would have that effect.
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Old 06-06-2006, 07:49 PM   #6
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The exhausts are seperate - you can see them above - they just suck air down when getting going, it's the same as directing exhausts onto the props or the vent holes built into props, it lets the props spin up instead of stalling the engine and allows it to get in the powerband, they are more often seen on deisels though I think - any idea what power is on those?
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Old 07-06-2006, 08:54 AM   #7
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Quote:
Originally posted by Cookee
any idea what power is on those?
ALOT.?!!?
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Old 07-06-2006, 09:24 AM   #8
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Cheers Cookie, so they have a sort of clutch effect allowing the prop to slip so the motor has a chance to get going, cunning.
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Old 07-06-2006, 09:45 AM   #9
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great looking bit of kit, Wouldn't like to get tangled up with them, good for mincing too...
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Old 07-06-2006, 09:54 AM   #10
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Quote:
Originally posted by Cookee
The exhausts are seperate - you can see them above - they just suck air down when getting going, it's the same as directing exhausts onto the props or the vent holes built into props, it lets the props spin up instead of stalling the engine and allows it to get in the powerband, they are more often seen on deisels though I think - any idea what power is on those?
I thought they might join the exhausts to the drive mounted pipes with a flexible duct similar to the fb design trimax drives?
Fountain used to do a 42 Lightning with 2 x 420-hp Yanmar 6LY2A. Maybe they have added one in the middle? The old one used to top 66 knot.
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Old 07-06-2006, 10:22 AM   #11
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great bit of kit and love the drives but it looks bit forced in and untidy to me.... i would have thought smooth stainless bends would have made better airflow etc too or do you think that dont matter....???
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Old 07-06-2006, 11:35 AM   #12
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Doesn't need it. It's just gives it a helping hand to get up on the plane. As the props start spinning up, they suck a bit of air in helping em slip a bit to get the weesels boosting. Once fully planing, top half of the prop is out of the water.

I agree it looks a bit silly, but not as silly as a boat that won't plane.
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Old 10-06-2006, 02:58 AM   #13
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Quote:
Originally posted by Matt


I agree it looks a bit silly, but not as silly as a boat that won't plane.
Watch it buddy.
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Old 10-06-2006, 08:27 AM   #14
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yes pretty sure 3 x yanmar 440 or if new maybe the 480hps, saw a few for sale over in florida.
I heard that this was turning up as the broker shop in westbourne is a fountain dealer and mentioned it...
hope it stays local then we can see for ourselves whether fountain are as good as they say they are.
nice to see it out in the force 4/5 today!!
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