On Tue, 31 Dec 2019 18:05:18 -0500, Keyser Soze
wrote:

On 12/31/19 4:55 PM, wrote:

On Tue, 31 Dec 2019 14:28:08 -0500, John H.
wrote:

On Tue, 31 Dec 2019 14:02:49 -0500, Wayne.B wrote:

On Tue, 31 Dec 2019 12:40:38 -0500, John H.
wrote:

On Tue, 31 Dec 2019 11:18:28 -0500, Wayne.B wrote:

On Tue, 31 Dec 2019 01:08:38 -0500, wrote:

On Mon, 30 Dec 2019 19:16:55 -0800 (PST), Tim
wrote:

On Monday, December 30, 2019 at 5:07:10 PM UTC-6, Wayne.B wrote:
Coming soon to a boat near you:

https://www.powerandmotoryacht.com/video/testing-cox-cxo300-diesel-outboards

man, those things are monsters...

https://www.youtube.com/watch?v=eXyzNdrMrik

Looks like a niche product to me. They are big heavy honkers.

===

True, but 300 hp gas outboards are not exactly feather weight either.
I think the biggest issues right now are parts and dealer support.

The Yamaha 300 is about 550 lbs, and the Cox diesel is about 825 lbs. A bit heavier for sure.

===

Yes, but not really a deal breaker in my opinion. Consider that each
of my 300hp DD 6-71's weighs over 3,000 pounds, and a more modern
Cummins or Cat weighs well over 1,100 pounds plus transmission and
drive train.


Absolutely. Given the other specs that extra weight wouldn't be a deal breaker, if one had the bucks
at about twice the cost of the Yamaha 300.

As I said it is a niche product, probably for barge pushers and that
rare "tender" for a diesel yacht that has a 300 HP motor or two and
they don't want a separate fuel supply.
I am not sure it will be that attractive for "go fast" center
consoles.
I do notice that they are hanging outboards on bigger cruising boats
like the 42' Freeman Jimmy Buffett just bought. That might be a good
fit.


Four 350 hp four cycle gas engines will weigh what, 2000 pounds for 1400
hp? And four of those 800+ pound diesels for 1200 hp will weigh 3200
pounds? That Margaritavilla boat would have to be redesigned, I would
think, to sling that much weight on its butt, and it wouldn't be as
fast. Plus, the guys running four huge outboards on a go-fast fishing
boat probably don't give a damn about fuel burn.

===

The main reason to consider diesels is fuel range - about double with
the same tankage. Our old Bertram 33 burned 2 gallons a mile with
it's twin 350 hp Crusader gas inboards. Even with a 325 gallon tank
its effective range was under 150 miles. The cost estimates for
converting to diesel were close to $100K and that was 20 years ago.
By converting to outboards, the Crusaders could have been replaced
with another 300 to 400 gallons of fuel tankage which would have given
the boat a very respectable range in excess of 500 miles. With that
kind of range and fuel economy I would have taken the Bertram to
Florida instead of selling it.