On Jun 7, 8:12*am, North Star wrote:
On Jun 7, 3:31*am, wrote:









On Wed, 06 Jun 2012 11:21:49 -0600, Canuck57
wrote:

On 05/06/2012 6:44 PM, JustWait wrote:

As a kid my favorite fishing boat on an inland lake was a 9.9 hp Johnson
on a 18 foot aluminum boat rated for something like 40hp.

Sure, it was slow, but that was its advantage. *5 gallons of gas lasted
forever, and you could slow and deep troll in a way a 40 hp never could.

The new 4 strokes will go idle speed all day and not use as much gas
as your old 9,9 2 stroke.

I am still averaging a tad over a gallon an hour 110 hours in on my 70
Yamaha. That is mixed running from 1200 RPM to about 4200.

Once you get over 4200 the fuel consumption increases pretty fast but
there is some of that in the average too.

I do think if I was looking at the 40 Merc I would spend the extra
money for a 60. Same motor with an ECM that lets it develop it's full
potential. If you are running slower, it will user the same amount of
gas as the 40, you just have a little extra kick if you want it..

My 70 Yamaha is also the same basic engine with Yamaha electronics and
a Yamaha lower unit. There are some performance tests that say the 70
HP is really more like 64-65.

According to Mercury Site the 40 hp has a displacement of 45.6 while
the 50 and 60 hp (including the big foot models) displace 60.8. *The
bigger motors also weigh quite a bit more than the 40.
BTW. The 40 is mid range for the smaller boat while the 60 is for the
bigger Xcalibur.



Talked to a rep at the factory.
He said in his opinion you'd need a regular 60hp 4stroke to equal the
low end power of the basic 50hp 2 stroke.
He was referring to the power needed to get the boat up on plane,
rather than keeping it up.
Most people buy the 60 big foot for the 16 Xcalibur.
We also talked about the 15 AllSport compared to the 16 Xcalibur. He
pretty well said what I already knew.... The Xcalibur is the Cadillac
of their models.














He said you could probably get away with the 50 if only two people
were on the boat. With 4 people, the 60 is better.