What is your fuel consumption?
 

Guys,

I am thinking about getting a harbercraft jetboat ... these things are
made from aluminum and have the 175 HP Mercury sportjet..

So far so good ... Now what raises the fuel warning flag are the
terms:

- jet
- 2 stroke
- carburator (two of them ;)

The boat will burn about 5 gallons per hour at 30 mph... now I was
wondering how this compares to a similar sized fiberglass hboat with
115-150 HP 4 Stroke outboard..

What is the fuel you burn at cruise speed and WOT, whats your boat
size/weight and what motor are you running ..

I am interested in how the relatively light alu jetboat compares to a
more conventional boat with 4 stroke motor..

Any info is appreciated :)


Matt

What is your fuel consumption?
 

I run a Jetcraft 21' Bluewater and get about 1.75-2 mpg depending on
throttle opening. Mostly WOT. You might also look at the Willy boats
Predator. It is also a Sportjet powered boat. I have heard that the
Harbercraft's are not as good as the former Jetcraft's (they bought jetcraft
and moved it to BC). Call Willy boats and ask them. Mine is a 1991 Kodiak
pump, but I understand the newer Hamilton's are about 95% of a prop boat
now.
Bill

"Matt Lang" wrote in message
om...
Guys,

I am thinking about getting a harbercraft jetboat ... these things are
made from aluminum and have the 175 HP Mercury sportjet..

So far so good ... Now what raises the fuel warning flag are the
terms:

- jet
- 2 stroke
- carburator (two of them ;)

The boat will burn about 5 gallons per hour at 30 mph... now I was
wondering how this compares to a similar sized fiberglass hboat with
115-150 HP 4 Stroke outboard..

What is the fuel you burn at cruise speed and WOT, whats your boat
size/weight and what motor are you running ..

I am interested in how the relatively light alu jetboat compares to a
more conventional boat with 4 stroke motor..

Any info is appreciated :)


Matt

What is your fuel consumption?
 

Calif Bill wrote:
I run a Jetcraft 21' Bluewater and get about 1.75-2 mpg depending on
throttle opening.

Dang, we measure fuel in gallons per hour (1.75 on our last trip). Of
course, we burn diesel and only go about 8 knots.

Speed costs!

Fair Skies
Doug King

What is your fuel consumption?
 

"Matt Lang" wrote in message
om...

now I was
wondering how this compares to a similar sized fiberglass hboat with
115-150 HP 4 Stroke outboard..


I don't know about 4 strokes but I believe there was a rule of thumb
that said for 2 stroke outboards they would burn about 10% of
their rated horsepower at WOT. So a 115 HP would burn
somewhere around 11 gallons per hour @ WOT.

Though I may be wrong....

What is your fuel consumption?
 

1985 Bayliner 1952 cuddy
18.5' fiberglass 'modified V' hull
19.5' Length over all
2200 lbs dry weight
1985 Volvo Penta AQ125B 4 cyl 105 hp 4 stroke
1 barrel Solex carb 35 mm
Volvo Penta 270 Stern drive
14 X 19 modified SS 3-blade prop (14 X 21 effective)
StingRay Hydrofoil
35 mph WOT @ 4800 RPM
32 mph cruise @ 4400 RPM

Premium unleaded fuel (92 octane)
4 adults & 1 dog, ski equipment, coolers, etc-
6-7 gph WOT
5 gph cruise



"Matt Lang" wrote in message
om...
Guys,

I am thinking about getting a harbercraft jetboat ... these things are
made from aluminum and have the 175 HP Mercury sportjet..

So far so good ... Now what raises the fuel warning flag are the
terms:

- jet
- 2 stroke
- carburator (two of them ;)

The boat will burn about 5 gallons per hour at 30 mph... now I was
wondering how this compares to a similar sized fiberglass hboat with
115-150 HP 4 Stroke outboard..

What is the fuel you burn at cruise speed and WOT, whats your boat
size/weight and what motor are you running ..

I am interested in how the relatively light alu jetboat compares to a
more conventional boat with 4 stroke motor..

Any info is appreciated :)


Matt

What is your fuel consumption?
 

Stanley Barthfarkle wrote:

1985 Bayliner 1952 cuddy
18.5' fiberglass 'modified V' hull
19.5' Length over all
2200 lbs dry weight
1985 Volvo Penta AQ125B 4 cyl 105 hp 4 stroke
1 barrel Solex carb 35 mm
Volvo Penta 270 Stern drive
14 X 19 modified SS 3-blade prop (14 X 21 effective)
StingRay Hydrofoil
35 mph WOT @ 4800 RPM
32 mph cruise @ 4400 RPM

Premium unleaded fuel (92 octane)
4 adults & 1 dog, ski equipment, coolers, etc-
6-7 gph WOT
5 gph cruise




5 MPG at WOT ! Wow, there are some RV owners that would like to do that
well at any speed...

Rob

What is your fuel consumption?
 

Dang, how do you get so much speed out of your little Volvo engine? I
have a newly rebuilt AQ130C ( 4 cyl. 130 hp) and it only takes my boat
up to 31 mph at WOT, about 5000 rpm with two adults in it. My boat is
a 17' fiberglass v-hull and weighs about 2000 lbs I would guess, and
has a Volvo 270 outdrive on it.

BTW, it consumes just 3-4 gph at cruise speed (4200 rpm, 27 mph).

Bob

Stanley Barthfarkle wrote:
:1985 Bayliner 1952 cuddy
:18.5' fiberglass 'modified V' hull
:19.5' Length over all
:2200 lbs dry weight
:1985 Volvo Penta AQ125B 4 cyl 105 hp 4 stroke
:1 barrel Solex carb 35 mm
:Volvo Penta 270 Stern drive
:14 X 19 modified SS 3-blade prop (14 X 21 effective)
:StingRay Hydrofoil
:35 mph WOT @ 4800 RPM
:32 mph cruise @ 4400 RPM
:
:Premium unleaded fuel (92 octane)
:4 adults & 1 dog, ski equipment, coolers, etc-
:6-7 gph WOT
:5 gph cruise
:
:
:
:"Matt Lang" wrote in message
. com...
: Guys,
:
: I am thinking about getting a harbercraft jetboat ... these things are
: made from aluminum and have the 175 HP Mercury sportjet..
:
: So far so good ... Now what raises the fuel warning flag are the
: terms:
:
: - jet
: - 2 stroke
: - carburator (two of them ;)
:
: The boat will burn about 5 gallons per hour at 30 mph... now I was
: wondering how this compares to a similar sized fiberglass hboat with
: 115-150 HP 4 Stroke outboard..
:
: What is the fuel you burn at cruise speed and WOT, whats your boat
: size/weight and what motor are you running ..
:
: I am interested in how the relatively light alu jetboat compares to a
: more conventional boat with 4 stroke motor..
:
: Any info is appreciated :)
:
:
: Matt
:
:

What is your fuel consumption?
 

"DSK" wrote in message
...
Calif Bill wrote:
I run a Jetcraft 21' Bluewater and get about 1.75-2 mpg depending on
throttle opening.

Dang, we measure fuel in gallons per hour (1.75 on our last trip). Of
course, we burn diesel and only go about 8 knots.

Speed costs!

Fair Skies
Doug King


Speed is addictive. Why I drove a Corvette when I raced sports cars.

What is your fuel consumption?
 

trainfan1 wrote:

Stanley Barthfarkle wrote:

1985 Bayliner 1952 cuddy
18.5' fiberglass 'modified V' hull
19.5' Length over all
2200 lbs dry weight
1985 Volvo Penta AQ125B 4 cyl 105 hp 4 stroke
1 barrel Solex carb 35 mm
Volvo Penta 270 Stern drive
14 X 19 modified SS 3-blade prop (14 X 21 effective)
StingRay Hydrofoil
35 mph WOT @ 4800 RPM
32 mph cruise @ 4400 RPM

Premium unleaded fuel (92 octane)
4 adults & 1 dog, ski equipment, coolers, etc-
6-7 gph WOT
5 gph cruise




5 MPG at WOT ! Wow, there are some RV owners that would like to do that
well at any speed...

Rob

2003 Parker 2520XL
Yamaha 225 four stroke
About 32' overall (pulpit and transom bracket)
About 6500 pounds with engine, half tank of fuel, stuff
39+ mph at 6000 rpm, WOT 20 gph
24-25 mph at 4100-4300 rpm, 10 gph

Because of the incessant hard chop on Chesapeake Bay, I usually run at
20-22 knots, keeping gph under 10. I watch the fuel flow meter more than
anything else.

What is your fuel consumption?
 

What prop are you using? Do you have a Sting Ray Hydrofoil? If not, get
one. Boat planes better, and it allows use of a higher pitched prop (14 X 21
SS cupped in my case). Less cavitation, and no "rooster tail"- energy that
would have been wasted with a rooster tail is sent rearward, increasing
propulsion.


"Bob" wrote in message
...
Dang, how do you get so much speed out of your little Volvo engine? I
have a newly rebuilt AQ130C ( 4 cyl. 130 hp) and it only takes my boat
up to 31 mph at WOT, about 5000 rpm with two adults in it. My boat is
a 17' fiberglass v-hull and weighs about 2000 lbs I would guess, and
has a Volvo 270 outdrive on it.

BTW, it consumes just 3-4 gph at cruise speed (4200 rpm, 27 mph).

Bob

Stanley Barthfarkle wrote:
:1985 Bayliner 1952 cuddy
:18.5' fiberglass 'modified V' hull
:19.5' Length over all
:2200 lbs dry weight
:1985 Volvo Penta AQ125B 4 cyl 105 hp 4 stroke
:1 barrel Solex carb 35 mm
:Volvo Penta 270 Stern drive
:14 X 19 modified SS 3-blade prop (14 X 21 effective)
:StingRay Hydrofoil
:35 mph WOT @ 4800 RPM
:32 mph cruise @ 4400 RPM
:
:Premium unleaded fuel (92 octane)
:4 adults & 1 dog, ski equipment, coolers, etc-
:6-7 gph WOT
:5 gph cruise
:
:
:
:"Matt Lang" wrote in message
. com...
: Guys,
:
: I am thinking about getting a harbercraft jetboat ... these things are
: made from aluminum and have the 175 HP Mercury sportjet..
:
: So far so good ... Now what raises the fuel warning flag are the
: terms:
:
: - jet
: - 2 stroke
: - carburator (two of them ;)
:
: The boat will burn about 5 gallons per hour at 30 mph... now I was
: wondering how this compares to a similar sized fiberglass hboat with
: 115-150 HP 4 Stroke outboard..
:
: What is the fuel you burn at cruise speed and WOT, whats your boat
: size/weight and what motor are you running ..
:
: I am interested in how the relatively light alu jetboat compares to a
: more conventional boat with 4 stroke motor..
:
: Any info is appreciated :)
:
:
: Matt
:
: