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Old 09-08-2009, 10:59 PM   #1
WASHY
 
Country: UK
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Boat make: Phantom 20
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Over revving.

Hi all, i have a phantom 20 with a mercury xr2 200hp. The problem i had today was, as i was leaving Brixham harbour and started to give it some throttle, the engine was over revving quite alot and the boat was not getting onto the plane, basicly the bow was skywards. If anybody has any ideas on what the problem may be i would be very greatful for any suggestions you may have.

P.S im running a Lazer 2, 21p prop.
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Old 09-08-2009, 11:45 PM   #2
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sounds like cavitation, did you slowly build up the revs to get on the plane or did you boot it?
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Old 10-08-2009, 12:15 AM   #3
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trim it in dude
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Old 10-08-2009, 08:08 AM   #4
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prop slip

check to see if prop bush is slipping??
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Old 10-08-2009, 10:44 AM   #5
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has this just started or is it an on-going problem..as stated above trim in..check prop bush..then if you still have problems ide drop the motor a hole.

edit..you did'nt have 3 mates all sitting on the rear seat did ya
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Old 10-08-2009, 03:46 PM   #6
WASHY
 
Country: UK
Location: Paignton
Occupation: Security officer
Interests: Powerboat racing
Boat make: Phantom 20
Engines: XR2 200hp
Cruising area: Torbay

Join Date: Dec 2006
Location: Paignton
Posts: 23
Thanks for all your replies folks.
scooby hugh. i didnt try and boot it straight away, but when i started hittin 6500rpm and still not gettin anywhere was when i realised there might be a problem. i did try trimming it more but to no effect.

Rhino, i will try what you suggested and take it from there.

Thanks again for your time everyone.
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Old 10-08-2009, 03:51 PM   #7
WASHY
 
Country: UK
Location: Paignton
Occupation: Security officer
Interests: Powerboat racing
Boat make: Phantom 20
Engines: XR2 200hp
Cruising area: Torbay

Join Date: Dec 2006
Location: Paignton
Posts: 23
baj666.
This is the first time its happend, so wasnt sure what was going on. i just put the boat back on trailer and took it home. i see what u meen tho about having three people on back seat.
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