200 YAMAHA on 23' SeaCraft

[Bigshrimpin]

Originally Posted by Bigshrimpin

I'm gonna put a 150 on the 23 just for Kmoose.

As promised. New 150 4 stroke Merc . . . Let's see what happens. 55 days until launch.

[77SceptreOB]

Originally Posted by Bigshrimpin

As promised. New 150 4 stroke Merc . . . Let's see what happens. 55 days until launch.

I would say that is waaaaay under powered. Curious to see the sea trial results in 2 months.

With 2 cylinders out on my 225hp 2 stroke (thus making 150 hp) I couldn't even get my 23' Sceptre on a plane. That was with a 17 pitch prop.

[captbone]

55 days? I can't wait that long.

I am looking forward to the results. I think 38mph will be the top end number. And 4mpg.

[Bigshrimpin]

http://www.thehulltruth.com/boating-...tter-hull.html


Quotes from a well respected local charter captain

Originally Posted by RiptideCharters

Just for kicks I wanted to see if the 150s had enough torque to get on plane with just one motor. With the 20" Alpha 1 four blade props I trimmed 1 motor out of the water. The boat took 8-10 seconds to come on plane then the boat picked up speed quickly. Ran 38 mph @ 4500 rpm WOT on the single engine. I'm very impressed the motor had the low end grunt to get the boat on plane.

Originally Posted by RiptideCharters

Ive been playing with a custom 25 foot aluminum duck hunting boat that has a pair of the new 150 4 strokes on the back. The motors are STRONG. Only have about 5-6 hours on them. The boat and motors weigh in around 4800# In prop testing i saw 58.5 mph with 21" Tempest Plus props and 56.5 mph with 20" Merc 4 blade aluminum props. Awesome hole shot. Very quiet and seem to sip fuel. Will have a better handle on the fuel numbers after the.boat makes a few longer trips. So far I'm a big fan of them.

Originally Posted by RiptideCharters

I did not have to play with the jack plates to get the boat on plane. The 150 Merc is a BEAST of a motor. Im certain with a single 150 Merc on the duck boat, centered and propped correctly it would run in the low 40 mph range

I run a single 150 Merc on my 22 Hydra Sports LTS Bay boat. With a 19 Tempest + it will break 50 mph. I charter it with an 18p Enertia and with 3 people and 80 gals of fuel it runs 46mph.

My co captain Shaun Ruge is looking to repowere his 23 Sea Craft with twin 150 next season.

The 150 Merc is lighter and stronger than the 200s in the same 4 cyl class. They seem WAY under rated and they have a TON of low end torque with 3.0l of displacement

[Bigshrimpin]

Originally Posted by captbone

55 days? I can't wait that long.

I am looking forward to the results. I think 38mph will be the top end number. And 4mpg.

I can't wait either . . . It's gonna be a long wait. 38mph is in the ball park of what I'm expecting with a 15P enertia.

[Bigshrimpin]

Here's another few data points.

1. Sailfish 220 basically a 23 seacraft hull - 18 inches tested at 4450lbs with a single Mercury 150. It's turning a Rev 4 SLOW arse bulldozer prop. Enertias are WAY WAY faster.
http://sailfishboats.com/wp-content/...F10032013Z.pdf

2. Capt Bone alerted me to a 25 Bertram owner that repowered with this same engine and it reportedly hits 32 knots (36.8mph)

3. 1987 Mercury 175hp powerhead on my 200mid and lower pushed my 23 to 43mph.

https://www.youtube.com/watch?v=jg7cdv1w1vE