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14-06-2006, 08:16 PM
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#1
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
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Design Speed
Boats seem to have a max design speed and engine weight.
Just wondering if anyone knew what it was for a Phantom 20
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14-06-2006, 08:25 PM
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#2
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Registered User
Country: Essex
Location: Great Stambridge Essex
Occupation: Director Paving company
Interests: Boating/Squash
Cruising area: Essex Marina/crouch southeast coast
Join Date: Sep 2004
Location: Great Stambridge Essex
Posts: 2,033
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Mine seems to be be 83mph with two fat people!
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14-06-2006, 08:25 PM
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#3
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Registered User
Country: uk
Location: brighton
Occupation: CABINET MAKER
Interests: SPEED BOATS,MOTO G.P
Boat name: MOTIVATION
Boat make: MARSHAN 21
Engines: AINT GOT ONE!!
Cruising area: sea
Join Date: Sep 2005
Location: brighton
Posts: 1,223
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i suspect its below what yours is capable of
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Taurus excreta cerebrum vincit
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14-06-2006, 08:57 PM
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#4
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Registered User
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: 2,475
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Wasn't the maximum recommended on a p18 115 hp?
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PLEASE DON'T STEAL...THE GOVERNMENT DON'T LIKE THE COMPETITION
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14-06-2006, 09:31 PM
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#5
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Registered User
Country: uk
Location: Bristol area
Occupation: Electrician
Interests: mmm stella
Boat make: 16 reiver
Engines: mercury 125 optimax
Cruising area: Lyme Bay
Join Date: Mar 2006
Location: Bristol area
Posts: 344
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not sure but i would say 115 would be max for a p16
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14-06-2006, 09:31 PM
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#6
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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Quote:
Originally posted by roofer
Wasn't the maximum recommended on a p18 115 hp?
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Depends who's reccomending.
for example, I don't think anyone would have reccomended a 115hp motor, for racing one in 2 litre OCR (200hp)
For pleasure use, mebbe by CE standards, i'm sure it would be different.
I spoke with Steve Baker a while ago, and mentioned your setup, and asked what he thought of running a P20 @ 90mph, his thoughts were, that it'd be ok in the right hands, until a situation arrose where you had to take avoiding action suddenly. He wasn't too sure about the outcome of that
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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14-06-2006, 09:32 PM
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#7
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Registered User
Country: uk
Location: Bristol area
Occupation: Electrician
Interests: mmm stella
Boat make: 16 reiver
Engines: mercury 125 optimax
Cruising area: Lyme Bay
Join Date: Mar 2006
Location: Bristol area
Posts: 344
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a p18 is more likely to be up to 175
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14-06-2006, 09:41 PM
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#8
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
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Quote:
Originally posted by Jon Fuller
I spoke with Steve Baker a while ago, and mentioned your setup, and asked what he thought of running a P20 @ 90mph, his thoughts were, that it'd be ok in the right hands, until a situation arrose where you had to take avoiding action suddenly. He wasn't too sure about the outcome of that
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Glad he thinks the boat can handle it.
Shame I can't, well i've learnt alot of the last few months, may have hurt me wallet but not me body
what does he think of a big heavy torquey 3ltr hanging on the back?
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14-06-2006, 09:51 PM
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#9
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hello
Join Date: Mar 2004
Posts: 2,739
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Quote:
Originally posted by Jon Fuller
I spoke with Steve Baker a while ago, and mentioned your setup
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Did you mention my setup of 75Kg of sand (in bags) strapped into the passenger seat cus no one wants to go boating with me.
Maybe you should change my name to Johnny No Mates
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14-06-2006, 09:56 PM
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#10
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Registered User
Boat make: Phantom 23
Join Date: Mar 2006
Posts: 1,693
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Quote:
Originally posted by Burty
what does he think of a big heavy torquey 3ltr hanging on the back?
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Well our "Big heavy torquey 3ltr" weights the same as a xr2 thank you very much!!
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14-06-2006, 09:58 PM
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#11
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
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Quote:
Originally posted by PuppiesBalls
well its good to know that ur not talking about our beautiful MAD EFI 300 cus that weighs the same as an xr2!! thank u very much !
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only 900kgs then
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14-06-2006, 10:14 PM
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#12
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Registered User
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: 2,475
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Quote:
Originally posted by Jon Fuller
I spoke with Steve Baker a while ago, and mentioned your setup, and asked what he thought of running a P20 @ 90mph, his thoughts were, that it'd be ok in the right hands, until a situation arrose where you had to take avoiding action suddenly. He wasn't too sure about the outcome of that
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That could apply to many things, I wouldn't like to take avoiding action at 90mph in my car either.
__________________
PLEASE DON'T STEAL...THE GOVERNMENT DON'T LIKE THE COMPETITION
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14-06-2006, 10:18 PM
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#13
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Registered User
Boat make: Phantom 23
Join Date: Mar 2006
Posts: 1,693
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Quote:
Originally posted by roofer
That could apply to many things, I wouldn't like to take avoiding action at 90mph in my car either.
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what car have u got though?
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14-06-2006, 10:31 PM
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#14
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
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A big mudda
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14-06-2006, 10:33 PM
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#15
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Registered User
Boat make: Phantom 23
Join Date: Mar 2006
Posts: 1,693
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sounds fun
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15-06-2006, 07:19 AM
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#16
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Registered User
Country: England
Location: Cornwall
Occupation: Civil Engineer in the water industry
Interests: Powerboat racing, travel, curries, zimmers
Boat name: "N" Class fabrication
Boat make: B23
Engines: 200XS
Cruising area: Torbay & Falmouth
Join Date: Jul 2005
Location: Cornwall
Posts: 478
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Quote:
Originally posted by Jon Fuller
Depends who's reccomending.
for example, I don't think anyone would have reccomended a 115hp motor, for racing one in 2 litre OCR (200hp)
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I seem to recollect that when we first started running XR2`s on the P18 in OCR that Steve was asked about the maximum recommended power for that boat. I am pretty sure he said 150HP as a general rule but with the right set up and with an experienced driver, 200 was OK. I think it was the RYA being a little paranoid at the time that had prompted the question.
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