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Old 29-06-2006, 12:16 AM   #1
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Country: Norway
Location: Lillesand
Occupation: Director
Boat make: Phantom 25
Engines: 2 x Merc 2.5 EFI SS
Cruising area: Southern Norway

Join Date: Apr 2004
Location: Lillesand
Posts: 58
Phantom 25 rigging twin - soon there

Hi!

Soon there.

Cheeeers, Toffen G
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Old 29-06-2006, 09:15 AM   #2
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Country: Denmark
Location: Sweden
Occupation: Planning my next boatcraze
Interests: Boats and Boats
Boat make: Fletcher 199 Bravo Superlight Version
Engines: Mariner 200
Cruising area: Danish Westcoast and Oresundsarea, Swedish lake

Join Date: Nov 2005
Location: Sweden
Posts: 131
Looking very good indeed - Like to hear how it performs.

Cheers

Troels
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Old 10-07-2006, 10:18 PM   #3
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Country: Norway
Location: Lillesand
Occupation: Director
Boat make: Phantom 25
Engines: 2 x Merc 2.5 EFI SS
Cruising area: Southern Norway

Join Date: Apr 2004
Location: Lillesand
Posts: 58
Phantom 25 with twin 2.5 EFI on water

Hi!

I trust you all are well.

Got my Phantom 25 with twin Merc 2.5 EFI SS engines on water this week. We are still tuning it in, but some testing has been done. The engines are mounted 19 inches centre to centre, and propshaft is 1,25 inches below the bottom. 2 inches of setback. Gear ratio is 1:1.87.

I have tried a pair of stock Bravo 1 28 pitch x 15 1/4 diameter props without went holes, and here are the results:

Holeshot: The boat jumps into plane without breaking loose.
4.000 rpms = 53 mph gps
6.300 rpms = 84 mp gps

Above 6.300 rpms the rpms increase, but not the speed. Lots of power left, but the boat needs more bowlift, and the prop loose grip of the water and ventilates.

My theory is that the Bravo 1 lift the stern too much due to is large diameter and 4 blade design. The effiency at 4.000 and 6.300 rpms indicates that the engines can be mounted higher if I can get hold of props with better bowlift / less stern lift.

I will test a pair of stock Mirage Plus 27 pitch tomorrow. Several Phantom offshore racers from the past have reccommended this prop together with Choppers as a good choice for top speed runs.

What do you think?

Cheeeeers and thanks!

Toffen G
A happy boater
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Old 10-07-2006, 10:48 PM   #4
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Boat make: Phantom 23

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wiked dude! have you got any pics of the boat since new engines have been fitted?
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Old 10-07-2006, 11:00 PM   #5
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Location: GOLDEN MILE
Boat name: LILY THE PINK AND TERMINATOR 11
Boat make: PHANTOM 21 AND 20
Engines: 2.5 EFI X 2

Join Date: Mar 2004
Location: GOLDEN MILE
Posts: 2,463
I'd try choppers and through hub cleavers , Guy I know with p25 runs 28 winrace props and is going to try my 29 et lightnings, ran mid 70's with the winrace and 24 choppers, Boat's fitted with twin xr2's.
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