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03-11-2009, 08:53 PM
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#61
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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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Kinnell Mr Mac, that's moooovin!
Congratulations.
JF
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__________________
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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04-11-2009, 07:45 AM
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#62
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BananaShark Member
Country: UK
Location: Salcombe South Devon
Occupation: Racer and builder
Interests: Winning races
Boat name: BananaShark
Boat make: BananaShark 34' Race
Engines: Twin Yanmar BY 260's
Join Date: Mar 2004
Location: Salcombe South Devon
Posts: 4,638
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Quote:
Originally Posted by Jon Fuller
Kinnell Mr Mac, that's moooovin!
Congratulations.
JF
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There should be a Phantom 19 on the water this morning with similar HP - should be interesting!
Nice one Bob, you deserve that after trying so hard! 
__________________
__________________
Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
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04-11-2009, 11:15 AM
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#63
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Registered User
Country: uk
Location: looe
Occupation: Marine engineer
Interests: boating/shooting/water sports
Boat name: Apmarine Racing
Boat make: Phantom 21, Manerfelt 23, Donzi 28zx
Engines: Merc XR2, Merc xs, 2 x 350Mags
Cruising area: plymouth/looe/fowey
Join Date: Oct 2006
Location: looe
Posts: 253
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Well done Bob
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04-11-2009, 03:01 PM
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#64
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Registered User
Join Date: Mar 2006
Posts: 509
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Congratulations Rob and well done David for hanging on for dear life 
Just over 100 mph is fantastic
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04-11-2009, 05:13 PM
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#65
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Registered User
Country: ENGLAND
Boat name: V13
Boat make: V24 batboat
Engines: 5.7 320hp
Cruising area: SOUTHCOAST
Join Date: Mar 2004
Posts: 1,131
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100
well done bob,what prop ?
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04-11-2009, 05:27 PM
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#66
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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 RHINO
what prop ?
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A tall one!
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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04-11-2009, 05:36 PM
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#67
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Pie Eater
Country: Near A Big Pond
Occupation: Engineer
Interests: Drinking
Boat name: Betty
Cruising area: Anywhere Wet
Join Date: Nov 2009
Posts: 2
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Quote:
Originally Posted by Cookee
There should be a Phantom 19 on the water this morning with similar HP - should be interesting!
Nice one Bob, you deserve that after trying so hard! |
Shame he didnt make it, only phantom out there must have had paddles 
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04-11-2009, 06:47 PM
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#68
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Senior Member
Country: UK
Location: Devon
Occupation: Garage Proprietor
Interests: PowerBoat Racing
Boat name: If Only
Boat make: Bernico F3 OCR, Bernico Prototype Inboard, and some Ribs
Engines: Yamaha Pro V 115
Cruising area: UK, France
Join Date: Jan 2005
Location: Devon
Posts: 3,095
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Quote:
Originally Posted by RHINO
well done bob,what prop ?
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4 Blade 26 ET Lightning !! I figured that if we started with 4 blades it would not matter if we lost one !!
Bob
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If Only
National Outboard Immersed Propeller Mono Record 103mph
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04-11-2009, 07:30 PM
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#69
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Registered User
Country: Guernsey
Occupation: Postie
Interests: Heavy Heavy Metal
Boat name: Slayer II, Slayer, Pen15
Boat make: Phantom 19G-R, Bernico F2 Extreme, Ring 15
Engines: Evinrude 115HO, Yam 90
Cruising area: Channel Islands
Join Date: Aug 2009
Posts: 1,460
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Quote:
Originally Posted by OCRDA
4 Blade 26 ET Lightning !! I figured that if we started with 4 blades it would not matter if we lost one !!
Bob
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You must have been turning some serious RPM! Awesome achievement to run 100mph in a ski boat 
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04-11-2009, 08:27 PM
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#70
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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 Paul E
You must have been turning some serious RPM! Awesome achievement to run 100mph in a ski boat |
9K?
__________________
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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05-11-2009, 01:24 AM
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#71
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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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and the rest, i was at nearly 9k to do 90 with a 22' prop, isnt the rule 1 pitch equals 200 rpm?? to achieve 100mph that motor must have been around 400hp and 10500 rpm???
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05-11-2009, 08:21 AM
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#72
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Trade Member
Country: England
Location: West Sussex
Occupation: Boatbuilder / Design
Interests: Anything powered on wheels, water or air
Boat name: OVERLORD
Boat make: RING 34' SPORTSBOAT 2 X V8 PETROL
Engines: 2 x 320 MERCRUISER B1
Cruising area: South coast
Join Date: Aug 2007
Location: West Sussex
Posts: 406
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Quote:
Originally Posted by OCRDA
4 Blade 26 ET Lightning !! I figured that if we started with 4 blades it would not matter if we lost one !!
Bob
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Congrats Bob,
Thats a very special milestone , you should be very pleased with being a member of a very exclusive club !!
Take it steady now ......... 
Regards,
Mike
__________________
Neglect not thy opportunities
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05-11-2009, 09:02 AM
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#73
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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 Burty
and the rest, i was at nearly 9k to do 90 with a 22' prop, isnt the rule 1 pitch equals 200 rpm?? to achieve 100mph that motor must have been around 400hp and 10500 rpm???
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Depends on the slip I guess. spose he might be running very high indeed on the transom. and we don't know what ratio he's running either, could be a special.
I was assuming 1.87:1 gear ratio and around 12% slip, but could be way off.
9000 rpm divided by 1.87 gear ratio= 4813 prop rpm * 26 pitch = 125138 in/min divided by 1056 = 118.5 mph * 0.88 (12% slip educated guestimate) = 104.28 mph. so 'roughly' 9k
But as I say, could be way off as there's a few assumptions in there.
Yours works out as such:....
9000 rpm divided by 1.87 gear ratio= 4813 prop rpm * 22 pitch = 105882 in/min divided by 1056 = 100.26 mph * 0.88 (12% slip educated guestimate) = 88.23 mph
The *divided by 1056* bit is the magic formula to convert inches per minute in to miles per hour.
__________________
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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05-11-2009, 09:03 AM
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#74
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Registered User
Country: England
Location: South West
Occupation: Development engineer
Interests: Fast boats
Boat name: Xtreme
Boat make: Bernico 21
Engines: Mercury F1, 300 Drag, XR2 "Fingerported"
Cruising area: South West
Join Date: Mar 2004
Location: South West
Posts: 1,043
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100mph
Well done Bob that is certainly shifting.
What is the new F2 hull like to drive?
I have seen the first boat built (yellow one at worlds).
Does the rear spoiler make much difference at the higher speeds?
That is really moving congrats to you and you son.
Cheers
Cye
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05-11-2009, 10:54 AM
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#75
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Registered User
Country: uk
Location: poole
Occupation: retail
Interests: sport and being lazy
Boat make: ring rib
Engines: merc xr2
Cruising area: bournemouth bay
Join Date: Jan 2006
Location: poole
Posts: 1,681
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Fantastic speeds 70mph seems pretty dam quick in boats around 20' let alone 100mph buttock clenching reasonably calm or not
__________________
i can na give her any more captain
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05-11-2009, 12:30 PM
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#76
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Senior Member
Country: UK
Location: Devon
Occupation: Garage Proprietor
Interests: PowerBoat Racing
Boat name: If Only
Boat make: Bernico F3 OCR, Bernico Prototype Inboard, and some Ribs
Engines: Yamaha Pro V 115
Cruising area: UK, France
Join Date: Jan 2005
Location: Devon
Posts: 3,095
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A couple of facts to stop you guessing.
New speed this morning is now
102.377 South
103.658 North
103.02 Average
9100 RPM 2:1 Sportmaster !! New F2 is awesome as expected running 103 all the way through run could have let go of the steering wheel !! Absolutely faultless.
Many thanks for all your positive comments.
Bob
__________________
If Only
National Outboard Immersed Propeller Mono Record 103mph
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05-11-2009, 01:12 PM
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#77
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Aged Member
Country: UK
Location: HAMPSHIRE
Occupation: Safety Engineering
Boat name: Savannah
Boat make: Princess 415
Engines: Volvos
Cruising area: SOLENT
Join Date: Oct 2004
Location: HAMPSHIRE
Posts: 779
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Thats brilliant...well done Bob.
__________________
Land was invented to give boats somewhere to visit
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05-11-2009, 01:23 PM
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#78
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Registered User
Country: Spain
Location: Mallorca
Occupation: Marine Service Manager
Interests: Boats,bikes and rally cars
Boat make: Phantom 21
Engines: Merc 135hp/merc XR2
Cruising area: Balearics
Join Date: Jun 2009
Location: Mallorca
Posts: 56
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Hell?!?!?!
Nice one Rob!! that is really moving and well done Dave for hanging in there.
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05-11-2009, 01:24 PM
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#79
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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 OCRDA
103.02 Average
Bob
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Jeeez!
~My hat's off to you.
__________________
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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05-11-2009, 01:27 PM
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#80
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Registered User
Boat make: Burgess
Join Date: Feb 2008
Posts: 60
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Looks like Bernicos are the modern day Phantom now
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