Hi everybody !
I just get a new boat, a Phantom 18 from 1994 with Yamaha 200 carb v6 from 1989 with Quicksilver Chopper 24" prop and have a lot of questions.
First of all, how can I verify if it is an original hull ? If you need some photos, I can put some here.
Currently, the anticavitation plate of the Yammi is at 12cm above the hull and the prop axis is at 17cm below, when the trim is at neutral position.
Is this a correct mount position ?
With the Chopper 24, the maximum speed before chine walking is 102 km/h (55 kt or 63 mph) with a lot of positive trim.
Sorry but I don't know the engine rpm, just sure that it is more than 5000 rev/s. The ratio is 1.86.
Is this a correct speed or it is very bad for a P18 with 200hp ?
I have a white antifouling on the hull (Soromap AF5), maybe it can increase drag ?
The boat has 2 flaps but I don't know if it is interesting to use they to increase the stability at high speed.
The tank is at the front of the boat.
I have no hydraulic steering, just one cable steering. It is important to change for a hydraulic steering for more security and steering precision ?
Seems that I have some play in the steering, maybe it can increase chine walking ?
I'm looking for an Optimax 225 to save some fuel at low and medium speeds, but the engine weight will increase of 40 kg (190kg to 229kg). Is this engine to heavy for a P18 ?
What about an Optimax 250 ? Not too punchy for a 18" hull ?
Thank you very much by advance for the future answers.