approx outboard speeds question
Hello all,I know that varied hulls etc will create a grand difference but what
are the approximate kt top speeds of:
30hp
40hp
60hp
85hp
100hp etc
outboard engines when placed on your average 17ft speed boat. I''ve scoured the web to find some sort of comparision chart and now
throw myself at your mercy. Cheers. |
The
Jun 24
2006
|
| Fiberglass, aluminum, wood, plastic? Weight of boat? 4 stroke or 2
stroke engine? Weight of persons, fuel & gear? What do you want to
accomplish? A 30hp may barely plane the boat w/ one person, or it could make for the
perfect aluminum fish & ski boat with all the power you need for the
whole family(50 years ago a Scott 30/33 was a hot setup on a light
boat). A 100hp could be set up for 33mph top speed or 70mph top speed
with many variables determining the outcome. Rob |
trainfan1
Jun 24
|
| Ok then Rob. There is clearly a lot that I need to learn. And here it
begins. So lets say 2 stroke engines on a 17ft Shakespeare hull. (So
fibreglass). Average use, 2 adults on the Thames, so not much else in the boat. Mission: pleasure and not sinking. Would could I expect from that? |
The
Jun 25
|
| not knowing the hull design & weight I would guess mid 20mph with 100hp. "The Fuzz" <LoudisGood@breathe.com> wrote in message |
Lost
Jun 25
|
| 100 hp is a lot of power on a 17 ft boat, probably 40 to 50 mph on
flat water, lightly loaded. With 50 hp it should be at least in the
mid 20s, maybe more. 50 hp is about the minimum for good performance. |
Wayne.B
Jun 25
|
| As a point of reference, a Boston Whaler 16' Dauntless with a 115 hp Merc.
(2 stroke) tops out at about 50 mph under ideal conditions. Eisboch www.eisboch.com |
Eisboch
Jun 25
|
| How does the material affect speed, besides the weight factor?
Rigidity, friction? |
Varis
Jun 25
|
| He gave us the material, because he doesn't know the weight. Rob |
trainfan1
Jun 25
|
