What are the (dis) advantages of using 2 Outboards?

What are the (dis) advantages of using 2 Outboards?

Post by John Mckenz » Tue, 09 Jun 1998 04:00:00


I have a 19 ft boat on wich I was planning to put a 70 HP 4-stroke
outboard motor.
What if I used 2 x 35 HP outboards?
What would be the advantages and the disadvantages?
I plan to use it for fishing at sea, so reliability and economy are
subjects wich concern me more than speed.

 
 
 

What are the (dis) advantages of using 2 Outboards?

Post by a.. » Tue, 09 Jun 1998 04:00:00


Quote:

>I have a 19 ft boat on wich I was planning to put a 70 HP 4-stroke
>outboard motor.
>What if I used 2 x 35 HP outboards?
>What would be the advantages and the disadvantages?
>I plan to use it for fishing at sea, so reliability and economy are
>subjects wich concern me more than speed.

Then get a single outboard and a kicker motor.  The weight of 2
outboards (in this case) will far outweigh any performance gains, and
your boat may not even be able to handle it (check the specs).  Plus,
the expense would definitely be cost prohibitive, and fuel efficiency
will be dismal.

Twin engines are usually reserved for larger boats where a single
engine is not available with the necessary horsepower (such as twin
200's).

 
 
 

What are the (dis) advantages of using 2 Outboards?

Post by Esteban Nune » Wed, 10 Jun 1998 04:00:00

I read recently that you get more power from a single engine with same HP as
the two combined.  For example, the power from a single 70 is more than twin
35.

Also, twin engines means more maintenance and more expenses (fuel).

The main advantage of twin engines is safety... if one breaks, you have the
other to get back to port safely.

In any case, twin engines is not a common sight on 19 ft boats.  Twin
engines start at 23 ft or so.

Esteban

Quote:

>I have a 19 ft boat on wich I was planning to put a 70 HP 4-stroke
>outboard motor.
>What if I used 2 x 35 HP outboards?
>What would be the advantages and the disadvantages?
>I plan to use it for fishing at sea, so reliability and economy are
>subjects wich concern me more than speed.


 
 
 

What are the (dis) advantages of using 2 Outboards?

Post by Bill » Wed, 10 Jun 1998 04:00:00

Quote:

> I have a 19 ft boat on wich I was planning to put a 70 HP 4-stroke
> outboard motor.
> What if I used 2 x 35 HP outboards?
> What would be the advantages and the disadvantages?
> I plan to use it for fishing at sea, so reliability and economy are
> subjects wich concern me more than speed.

I've run "twins" since 1983. I started as a land-lubber and wanted
redunduancy for safety, to hopefully compensate for my lack of
experience. I boat in remote waters of Alaska, where you may not see
anyone to help, for days. The water is cold and survival time "in the
drink" is measured in tens of minutes. I started with twins for safety,
and have stayed with them ever since. They cost more. They take more
gas, for sure. They weigh more than a single. I don't believe my old
2x25Hp are as fast as any 1x50Hp. I feel the same about my current
2x50Hp's, a 1x100Hp should be much faster (I think)...But, due to the
remote areas I boat, having family on every trip, I want twin motors for
my own personal comfort. I selected and built my current boat with twin
o/b's in mind. I am very happy with twin motors. But, it is a personal
selection, for me it was a safety issue.  Is a 19 ft boat too short for
twins?  I had twins on my 16foot inflatible and now have twins on my
20foot dory....

Funny thing...the only time in 15 years that I had an O/B breakdown in
remote waters, I paniced, failed to put the second motor in nuetral to
start, and bunged-up #2. I was luckily able to limp home on one hurtin'
engine. But, I still prefer twins motors...But, again, it depends on
where ya boat, personal comfort, confidence etc....

Good Luck...have Fun

--
-----------------------------------------------------------
Interested in the building of a stitch & glue plywood dory?
If so, I have a web site with a photo diary of the dory that I built.
Stop by and have a look at the boat building photos...  
http://www.alaska.net/~bwalker/ladyc/lchome.htm

 
 
 

What are the (dis) advantages of using 2 Outboards?

Post by John Mckenz » Fri, 12 Jun 1998 04:00:00


After listened to this opinions, I guess the best option is to have a
4-stroke  70 Hp, and a 2-stroke 15 hp out of the water (I think the
emergency motor isn't worth a 4-stroke investement).

Thank you all for your comments.