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Old 19 July 2012, 07:11   #1
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New Mercury 150 - very impressed

Just had a 2 minute go with a brand new fourstroke merc 150 having seen it around the port over the last few days. Initial impressions are how small it is physically compared to Yamahas or Suzukis of the same output...the darth vader cowl also looks "cool".

Absolutely silent when moving around the port, and still hardly audible even when you open it up. I don't know what the weight specs are but I would certainly go for one of these over an Opti based on what I have experienced. Still not sure it's better than an etec though
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Old 19 July 2012, 07:18   #2
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Interesting - How does it do weight wise compared to others ?
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Old 19 July 2012, 07:44   #3
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All New 150hp Four Stroke from MERCURY
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Old 19 July 2012, 13:27   #4
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Originally Posted by cgf10 View Post
Interesting - How does it do weight wise compared to others ?
205kg

Same as a 200 Etec small block.

My 150 Opti is 186kg
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Old 19 July 2012, 14:37   #5
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Long shaft 200 smallblock is only 190kg...

IMHO I think along with the standard 250 they are the best engines in the etec range
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Old 19 July 2012, 15:42   #6
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Fantastic engine!!! See attachment for engine weights.
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Old 19 July 2012, 16:25   #7
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Fantastic engine!!! See attachment for engine weights.
Interesting that all of them are better than the Opti at 495lbs... but way off the etec at 418
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Old 19 July 2012, 17:25   #8
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Quote:
Originally Posted by gotchiguy

Interesting that all of them are better than the Opti at 495lbs... but way off the etec at 418
A newbie question so don't take this the wrong way, but is that sort of weight difference really important?

I get power to weight ratios and that but my little SIB with 20hp only seems to go about 1mph slower per person. Surely if you have a gert big engine like that with those sorts of weights the differences in that chart would have little impact on performance? If not what tends to drive the need to save such relatively small amounts of weight, does it have a significant impact somewhere else like towing or is it a hobby specifc benchmark?

Watched the video on it and if I could even dream of owning one I'd be more interested in the ease of mantaince features than the weight of its peers.

Cheers Matt
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Old 19 July 2012, 17:38   #9
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I get power to weight ratios and that but my little SIB with 20hp only seems to go about 1mph slower per person. Surely if you have a gert big engine like that with those sorts of weights the differences in that chart would have little impact on performance?
Power and speed isn't everything, power to weight ratio, though important isn't everything either. The reason your SIB only goes 1mph slower as you add a person is due to the efficiency of the plane..If you keep adding people then there will come a point where if you add one more person then the boat will not plane and so that one person will drop you 5 or 6mph and make you use alot more fuel than without them.

I see from your profile that you have a tohatsu, I am going to imagine it is a two stroke for arguements sake, therefore pretty light. If you were to swap that engine for a four stroke (or any much heavier outboard), for example a honda, of the same power then the number of people you had to put onboard before the boat wouldn't plane would be reduced. The weight difference between the two engines would not be the weight of a whole new person: the reason why it falls off the plane sooner is because the weight is at the back, just where you don't want it to be when trying to plane..

It is the same with these larger engines, and becomes even more complex when dealing with rough conditions. The weight of my hull dry, is "supposedly" around 600kg, with the engine being 230kg ish, it is a significant proportion of the total weight, and anything we can do to reduce that will reap major rewards. Not just in the performance stakes, but more importantly in the handling and "feel" of the boat.

My last boat was a 4.2m rib, but it had a very heavy fourstroke 50hp on the back and so it was very rear-heavy and this caused a very unpleasant ride in choppy conditions, reducing the weight of that engine would have had massive consequences, infact another member on here specifically decided to go for a 40hp two stroke engine over the 50 from the same manufacturer because the weight difference was so large that the extra power would not only have been offset by the increased weight, but the handling would have been ruined too!

But I'm probably spouting bollocks again...

Edit:

Quote:
Originally Posted by MattD View Post
If not what tends to drive the need to save such relatively small amounts of weight, does it have a significant impact somewhere else like towing or is it a hobby specifc benchmark?
Reducing weight is always a good thing, car manufacturers nowadays are constantly trying to shed weight from the bloated machines they now churn out. Light weight means better fuel consumption, better acceleration and better top speed. And you can have all these things combined with the fuel consumption, low noise and smoothness so often associated with a fourstroke...in a two stroke...only with Evinrude Etec
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Old 19 July 2012, 17:45   #10
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But I'm probably sprouting bollocks again...
That was your excuse two seasons ago. I'm sure you mean "spouting" this time.

MattD, if you insist on asking Gotchi insightful and penetrating questions which encourage him to respond at such lengths, I fear that I'm going to be compelled to do something terrible. No, really, I think I would...
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