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Old 10 November 2010, 13:41   #31
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BTW I don't actually understand why horsepower is used as a measure of power. Barring the sake of tradition, anyone care to shed light on why KW/0.746 is used? Obviously KW is a metric measure, but why was HP adopted in the first place?
Because before e-tecs were invented, we all used to go around in 'orse drorn botes.
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Old 10 November 2010, 13:55   #32
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Normally I would argue back, but unfortunately I'm too busy. Controlled Assessment and all that

Onwards Blackpig!!
Oi! Don't drag me into your squabbles, I've enough on baiting the cousins on Etecowners group
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Old 10 November 2010, 13:56   #33
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For this I offer to you my most sincere and humbling apologies.
It doesn't appear to be working on them...
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Old 10 November 2010, 14:05   #34
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BTW I don't actually understand why horsepower is used as a measure of power.
Odd you should mention that, but in 1893, Count Otto von Dangremause did attempt to secure widespread acceptance of the Mousepower unit, but it was found to be a tad fiddly.

And as Mollers points out, it had to be wrapped right around the cowl
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Old 10 November 2010, 14:12   #35
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For this I offer to you my most sincere and humblin' apologies.
Well he just stood there mumblin' and humblin'.
Then a voice from above said.........

..."It doesn't appear to be working on them."
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Old 10 November 2010, 14:35   #36
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Just to muddy the water a tad more, the ICOMIA standards for engine rating allow for a +/-10% variation on stated rating, so a 100hp engine could be anything from 90-110hp. Obviously the bigger the engine the wider the absolute variation could be, e.g a 200hp could be 180-220hp. This explains why we get "weak" & "strong" engines.
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Old 10 November 2010, 14:41   #37
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Just to muddy the water a tad more, the ICOMIA standards for engine rating allow for a +/-10% variation on stated rating, so a 100hp engine could be anything from 90-110hp. Obviously the bigger the engine the wider the absolute variation could be, e.g a 200hp could be 180-220hp. This explains why we get "weak" & "strong" engines.
Yeah, I know that! Hence why most reckon that the Pro-XS and HOs put out 10% more. I remember reading the 200ho having been read on dyno as being 217hp for instance, and many would regard the 250ho as being easily 270+. A 250HO will always go faster on the same hull than a 250, otherwise the HO brand would be redundant. How else can this be explained but more power

All these high output engines are designed for the US bass boat market. The Lightning gearbox on ours was not designed for the application. The M2 gearbox (which is now sold on the 250ho) is much more suitable for an "offshore" application.
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Old 10 November 2010, 15:15   #38
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And how much of it is perception? You plant the throttle lever and a 2- stroke will roar into life with the noise & smell we are all accustomed to. The 4- stroke being an eco friendly machine will do the same thing a lot more quietly, so does it just seem like it's not working so hard?
Hmm, you've obviously never been on an Etec powered boat.
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Old 10 November 2010, 19:06   #39
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BTW I don't actually understand why horsepower is used as a measure of power. Barring the sake of tradition, anyone care to shed light on why KW/0.746 is used? Obviously KW is a metric measure, but why was HP adopted in the first place?
'Cos it's ow much work a hoss can do....

http://en.wikipedia.org/wiki/Horsepower

Plus the fact kilowobbles are a nasty foreign measurement that nobody understands. Big light bulbs are measured in kilowatts, it has no place on an outboard

While I have never been on either, Campbell's Vipermax down under with a DF140 on it gives about 35kt flat out and that was about Osprey's estimated top speed for the Etec 130 so they are probably similar output?

Which was why I got the Etec 150
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Old 10 November 2010, 19:10   #40
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.. Campbell's Vipermax down under with a DF140 on it gives about 35kt flat out and that was about Osprey's estimated top speed for the Etec 130 so they are probably similar output?
That's more like it - someone stirring the mix, rather than spoiling the fun.

I wonder whether O****y's estimated top speed for the e-tec 130 was based on how Campbell's performed with a DF140.
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