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22-01-2007, 08:29 AM
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#21
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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 cider daze
Hi Sake Iam intrested in what speed you saw with that set up, I had a 27 revenger with 200xs best i ever saw at windermere records week was 68 mph,great boat loves the rough water. How much is the engine
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Yours was stepped. From the pic of Sakes' one, it appears to be the non stepped original hull form.
I think the original 27's would be lucky to break 60 with a 200.
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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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22-01-2007, 08:44 AM
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#22
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Registered User
Country: uk
Location: Exmouth
Occupation: builder/developer
Interests: raceing
Boat name: cider daze
Boat make: cougar 28
Engines: 200 xs
Cruising area: Devon
Join Date: Apr 2004
Location: Exmouth
Posts: 297
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Hi Jon theres a guy who does safety cant remember his name has non stepped hull 200xs blue revenger27 i think he has seen 64mph, the guy i sold mine to had a 300 fitted buy chris lewis havent heard what speed he has seen . 29 revenger twin 300xs would be my next move i think, could do the big race next year in that, what do you think.
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07-02-2007, 07:15 PM
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#23
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Registered User
Country: Holland
Location: Friesland/Netherlands
Occupation: own company
Interests: fast Boats and MX Bikes
Boat make: Fountain Fever
Engines: 600SCI
Cruising area: Lemmer/ Ijselmeer
Join Date: Dec 2005
Location: Friesland/Netherlands
Posts: 137
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Aktion last week
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Regards Sake
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07-02-2007, 07:26 PM
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#24
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Registered User
Location: hayling island
Boat name: snow monkey
Boat make: extreme 24
Engines: mercruiser 6.2
Join Date: May 2004
Location: hayling island
Posts: 2,082
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cool pic,but it does look like your about to exit through the side door
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07-02-2007, 07:39 PM
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#25
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Registered User
Country: Holland
Location: Friesland/Netherlands
Occupation: own company
Interests: fast Boats and MX Bikes
Boat make: Fountain Fever
Engines: 600SCI
Cruising area: Lemmer/ Ijselmeer
Join Date: Dec 2005
Location: Friesland/Netherlands
Posts: 137
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Hi Carl,
please can you tel me what that means?
Thanks Sake
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Regards Sake
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07-02-2007, 07:41 PM
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#26
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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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think he means you are about to get thrown out
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07-02-2007, 08:00 PM
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#27
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Registered User
Country: Job Centre
Location: In a box
Occupation: Chaos's gofer
Interests: Skiving
Boat make: Spectre 30
Engines: 2 x Promax 225
Cruising area: In the bath
Join Date: Mar 2004
Location: In a box
Posts: 5,201
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Quote:
Originally Posted by cider daze
the guy i sold mine to had a 300 fitted buy chris lewis havent heard what speed he has seen .
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It was a 2.5efi, and Chris wasn't involved in the fitting of it, although he did used to specialise in Revengers!
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Chaos for Moderator.
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07-02-2007, 08:23 PM
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#28
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Registered User
Country: Holland
Location: Friesland/Netherlands
Occupation: own company
Interests: fast Boats and MX Bikes
Boat make: Fountain Fever
Engines: 600SCI
Cruising area: Lemmer/ Ijselmeer
Join Date: Dec 2005
Location: Friesland/Netherlands
Posts: 137
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wow no not thrown out not @ all the Revenger is a very good boat and this is not the limmet!!!!!!!!!!!!!
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Regards Sake
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07-02-2007, 09:11 PM
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#29
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Registered User
Country: uk
Join Date: Nov 2006
Posts: 308
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I would of gone for 300x rather than 300 xs. 300xs is close to 280/290 hp no matter what merc say. I know i,ve tried on in the states. Or suzuki,s new 300 four stroke . but at 330 hp the 300x still got more geee geees.
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08-02-2007, 01:20 PM
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#30
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Registered User
Country: Denmark
Boat make: Cobalt 263
Engines: Merc HP500EFI
Join Date: Feb 2005
Posts: 467
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Quote:
Originally Posted by red 5
I would of gone for 300x rather than 300 xs. 300xs is close to 280/290 hp no matter what merc say. I know i,ve tried on in the states. Or suzuki,s new 300 four stroke . but at 330 hp the 300x still got more geee geees.
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That's pretty strange - got any dyno numbers?
a couple of Checkmate tests suggests the XS having closer to 315hp as the a mate 21 runs around 85 with the X and 83 with the XS.. Several other tests suggest the same - fishing mags, outboards mags etc..
The X was not a option for Sake as he wanted a new engine - with a reasonalbe fuel economy..
would have loved a X my self - but my 250XS Dyno'ed at 286) does pretty well on my P21..
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Lars
"you can't live in the past nor future, only the present - so enjoy the ride"
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08-02-2007, 01:37 PM
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#31
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Registered User
Country: Holland
Location: Friesland/Netherlands
Occupation: own company
Interests: fast Boats and MX Bikes
Boat make: Fountain Fever
Engines: 600SCI
Cruising area: Lemmer/ Ijselmeer
Join Date: Dec 2005
Location: Friesland/Netherlands
Posts: 137
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Hi Lars,
You are right about the feul , and about the Hp the 300XS puls, i have to be honest that the 300 is not a big diffrents against the 250XS. My 2006 250 xs was also a very very good motor,
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Regards Sake
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08-02-2007, 04:26 PM
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#32
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Registered User
Country: uk
Join Date: Nov 2006
Posts: 308
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Hi, can anyone explain this!!!
max rpm cc gear box ratio.
300x 6800 3032 1.75 tm
300xs 6100 3160 1.75tm
250xs 5800 3032 1.75tm
so if a 250xs 286 hp
a 300x is 343 hp
and a 300xs is 300 hp
based on 14.4 % power increase. ( the difference between a standard 250 xs and your 286hp.
anybody had a 300xs dyno'ed or a 300x.
What did you find.
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08-02-2007, 05:09 PM
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#33
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Senior Member
Country: netherlands
Location: Mijdrecht/holland
Occupation: truck repair
Interests: fast boats/porches
Boat name: bernico cat
Boat make: bernico 26 cat 2x 2,5,s
Engines: merc,s 2,5 EFI,s
Cruising area: ijselmeer
Join Date: Dec 2005
Location: Mijdrecht/holland
Posts: 382
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Another way to determine what power output a certain outboard is making is fuel consumption.
This only works on regular 2 strokes (assumed they are properly tuned )with EFI or carbs,not on DI engines, although they come very close at full throttle.
Every outboard EFI carb 2 stroke uses avout 10 % of its power output (full throttle)in gallons an hour ,so a 300x for example should burn 30 gallons an hour ,but it did use 28,8 gall a hour on a calibrated fuel flow meter.
The old promax 300 was also rated at 300 hp,but it actually pulled not more than 27 gal /hour,so estimated BHP should be 270-275 .
You can easily look it up at Bass&Walleye magazine USA,its a great magazine with all independent tests,and they do comparisons too.
Almost every outboard is tested there,maybe they store the test results on their site.
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09-02-2007, 12:46 AM
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#34
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Registered User
Country: england
Location: southampton
Occupation: engineer
Interests: lots
Boat make: scorpion 8.1
Engines: 250HO
Cruising area: solent
Join Date: Mar 2004
Location: southampton
Posts: 1,353
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Quote:
Originally Posted by cider daze
great boat loves the rough water.
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how does it compare to ur current honda ride?
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09-02-2007, 10:06 AM
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#35
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Registered User
Country: uk
Join Date: Nov 2006
Posts: 308
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Quote:
Originally Posted by sterling
Another way to determine what power output a certain outboard is making is fuel consumption.
This only works on regular 2 strokes (assumed they are properly tuned )with EFI or carbs,not on DI engines, although they come very close at full throttle.
Every outboard EFI carb 2 stroke uses avout 10 % of its power output (full throttle)in gallons an hour ,so a 300x for example should burn 30 gallons an hour ,but it did use 28,8 gall a hour on a calibrated fuel flow meter.
The old promax 300 was also rated at 300 hp,but it actually pulled not more than 27 gal /hour,so estimated BHP should be 270-275 .
You can easily look it up at Bass&Walleye magazine USA,its a great magazine with all independent tests,and they do comparisons too.
Almost every outboard is tested there,maybe they store the test results on their site.
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I'm sure this is true but on the XR2 for example you make the motor leaner to increase hp hence using less fuel. Also on the yamaha and tohastu 130/140 you would make the fuel jet smaller making the motor leaner as int he XR2. Same again smaller jet use less fuel.
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09-02-2007, 10:56 AM
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#36
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Registered User
Country: UK
Location: South West
Boat make: Cyclone/ Cyclone/Rinker
Engines: Merc 2.5 efi's/300XS/5.0 v8
Join Date: Feb 2005
Location: South West
Posts: 592
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Rev limit on a 300XS is 6400, not 6100
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09-02-2007, 01:21 PM
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#37
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Registered User
Country: uk
Join Date: Nov 2006
Posts: 308
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Quote:
Originally Posted by Wacky Racer
Rev limit on a 300XS is 6400, not 6100
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Hava a look at www.mercuryracing.com and look at products 300xs you will clearly see 5400 - 5800 then 5400 - 6100 on 20" models and not 6400.
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09-02-2007, 03:50 PM
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#38
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Registered User
Country: UK
Location: South West
Boat make: Cyclone/ Cyclone/Rinker
Engines: Merc 2.5 efi's/300XS/5.0 v8
Join Date: Feb 2005
Location: South West
Posts: 592
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The sticker on my saddle and the manual says 6400 max rpm
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09-02-2007, 04:11 PM
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#39
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Registered User
Country: Holland
Location: Friesland/Netherlands
Occupation: own company
Interests: fast Boats and MX Bikes
Boat make: Fountain Fever
Engines: 600SCI
Cruising area: Lemmer/ Ijselmeer
Join Date: Dec 2005
Location: Friesland/Netherlands
Posts: 137
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Wacky you are right my also.
__________________
Regards Sake
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09-02-2007, 04:38 PM
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#40
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Senior Member
Country: netherlands
Location: Mijdrecht/holland
Occupation: truck repair
Interests: fast boats/porches
Boat name: bernico cat
Boat make: bernico 26 cat 2x 2,5,s
Engines: merc,s 2,5 EFI,s
Cruising area: ijselmeer
Join Date: Dec 2005
Location: Mijdrecht/holland
Posts: 382
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Quote:
Originally Posted by red 5
I'm sure this is true but on the XR2 for example you make the motor leaner to increase hp hence using less fuel. Also on the yamaha and tohastu 130/140 you would make the fuel jet smaller making the motor leaner as int he XR2. Same again smaller jet use less fuel.
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Sure ,thats right ,but any hotter than 1250 degrees and your burning a piston ,that is on the edge ,and outboard manufacturers never are so close.
They need to be proper tuned for the temperature and elevation where you do your boating.
Also the weight of the boat ,propellor ,speed etc play a rule here.
Thats why it is a general rule (10 % of its rated HP in gallons an hour)
It could be off on some racing engine,s that run extremely lean.
sterling
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