Import Manager
05-01-2004, 08:11 AM
#0, cruising speed?
Posted by capulina on Sep-23-03 at 10:20 PM
what is the cruising speed of your boats? we have a 26 billfisher w/twin volvo inboards and we seem to cruise around 16 knts or so when we are fully loaded with three guys, tackle, full bait tank, etc. what about when you travel with a following sea? the last couple trips we have taken, we have been coming home from the west and the boat seems to bog down and get stuck in the trough of the swells. we have had the boat for about 10 months and are still getting used to the ride and how to adjust the tabs.
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#1, RE: cruising speed?
Posted by DOGHOUSE26 on Sep-23-03 at 10:44 PM
In response to message #0
Mine is an 87 Billfisher with a '95 AD41P with 3750 Hrs. 3 guys, fuel, bait, etc.:
3000 RPM = 14.7- 15.2 nts
3100 = 15.2- 15.8
3200 = 15.8- 16.8
Going with the swell adds average .5 - 1 nt., sometimes 2 nts. short period steep swells
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#2, RE: cruising speed?
Posted by Tuba8 on Sep-24-03 at 06:48 PM
In response to message #1
Mine is a 26 bill fisher single inboard Yanmar
It seems to depend on direction and weather if its flat we run at 2800 18 to 19ks if the weater is up it can slow us to 15 16 at the same rpm.
Running in a following sea is a challenge bring up the tabs and hold on is all I can say.
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#3, RE: cruising speed?
Posted by Sleigher on Sep-26-03 at 03:34 PM
In response to message #0
89 Outerbanks, Volvo TAMD41A (200 horse inboard)
Depending on conditions up to 17 kts at around 3200. My Tach says 3500 but I was told by the previous owner that it is approx 300 off. I bought a photo-tach but it needs mercury batteries, ooops, off track.
A good cruise is 17 kts. Typically 15.
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#4, RE: cruising speed?
Posted by bobcomp on Sep-26-03 at 07:43 PM
In response to message #0
I run an Outerbanks with a KAMD 42 inboard. I cruise 18-19 K at 3550 rpm. Does not seem to make much difference with no. of people or upswell or downswell, tho the boat is harder to handle downswell even with tabs up.
Bob
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#5, RE: cruising speed?
Posted by Capt Art on Oct-21-03 at 11:59 AM
In response to message #4
I ran speed runs with Excalibur (1982 23 foot Albacore Special) last weekend with two people and a full tank of fuel. The boat has a 290 duo prop with 2.3 ratio using A5 props driven by the original AQAD40a 155 hp diesel. I ran the test with no tabs and the outdrive set to zero degrees in a calm sea on the backside of Anacapa. I read the gps speeds from a Lowrance LMS 160:
3000 RPM 21 knts
3200 RPM 24 knts
3400 RPM 27 knts
3600 RPM 29 knts
When I was doing 6 pack dive charters, I would cruise at 3200 rpm at about 20 knots with 18 scuba tanks and about 400 lb of misc gear. I usually cruise from 3000 to 3300 depending on the sea state and get about 3 nautical miles per gallon.
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#6, RE: cruising speed?
Posted by NoSlack on Oct-21-03 at 12:22 PM
In response to message #5
Thanks for the info on a DP/AQAD40 combo in a 23'. I still have the original 280 drive on my rig and was looking for some first hand knowledge what the DP drive would do for me.
I'm very encuraged by the numbers you stated and will start looking for a DP lower end for my drive.
I currently run 16-18 knots at 3000-3200 RPM.
Mike
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#7, RE: cruising speed?
Posted by Capt Art on Oct-21-03 at 02:14 PM
In response to message #6
Mike,
The Excalibur was built with the 280 and I upgraded to the 290 Duo Prop in 1987. The engine was lowered 1 inch and a new transom hole cut to accomodate the new outdrive and power trim system. Volvo recomended lowering the prop axis one inch. I remember that Volvo sold a kit with a one inch spacer and all the hardware for converting older single prop drives to Duo props. That might be the easiest way to do the swap.
I was amazed at how much better the boat ran after installing the new drive. The single prop makes a lot of noise which disappears when using the duo prop. The boat was much quieter, backed up with more authority, gained about 3 knots at cruise and used less throttle and thus less fuel. Best improvement I have ever made to the boat.
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#8, RE: cruising speed?
Posted by Saltwaters on Oct-28-03 at 07:33 PM
In response to message #0
We have a 26 Express that is inboard powered with a new Yanmar 240. We run at 2900 - 3000 rpms and go around 19 - 19.5. You are describing a problem we had with our old Volvo.
The boat is going slower than the seas are so handling is terrible. We like running it at 18 - 19 downswell. You have to go faster than the waves.
Bill on Tunacious
Posted by capulina on Sep-23-03 at 10:20 PM
what is the cruising speed of your boats? we have a 26 billfisher w/twin volvo inboards and we seem to cruise around 16 knts or so when we are fully loaded with three guys, tackle, full bait tank, etc. what about when you travel with a following sea? the last couple trips we have taken, we have been coming home from the west and the boat seems to bog down and get stuck in the trough of the swells. we have had the boat for about 10 months and are still getting used to the ride and how to adjust the tabs.
--------------------------------------------------------------------------------
#1, RE: cruising speed?
Posted by DOGHOUSE26 on Sep-23-03 at 10:44 PM
In response to message #0
Mine is an 87 Billfisher with a '95 AD41P with 3750 Hrs. 3 guys, fuel, bait, etc.:
3000 RPM = 14.7- 15.2 nts
3100 = 15.2- 15.8
3200 = 15.8- 16.8
Going with the swell adds average .5 - 1 nt., sometimes 2 nts. short period steep swells
--------------------------------------------------------------------------------
#2, RE: cruising speed?
Posted by Tuba8 on Sep-24-03 at 06:48 PM
In response to message #1
Mine is a 26 bill fisher single inboard Yanmar
It seems to depend on direction and weather if its flat we run at 2800 18 to 19ks if the weater is up it can slow us to 15 16 at the same rpm.
Running in a following sea is a challenge bring up the tabs and hold on is all I can say.
--------------------------------------------------------------------------------
#3, RE: cruising speed?
Posted by Sleigher on Sep-26-03 at 03:34 PM
In response to message #0
89 Outerbanks, Volvo TAMD41A (200 horse inboard)
Depending on conditions up to 17 kts at around 3200. My Tach says 3500 but I was told by the previous owner that it is approx 300 off. I bought a photo-tach but it needs mercury batteries, ooops, off track.
A good cruise is 17 kts. Typically 15.
--------------------------------------------------------------------------------
#4, RE: cruising speed?
Posted by bobcomp on Sep-26-03 at 07:43 PM
In response to message #0
I run an Outerbanks with a KAMD 42 inboard. I cruise 18-19 K at 3550 rpm. Does not seem to make much difference with no. of people or upswell or downswell, tho the boat is harder to handle downswell even with tabs up.
Bob
--------------------------------------------------------------------------------
#5, RE: cruising speed?
Posted by Capt Art on Oct-21-03 at 11:59 AM
In response to message #4
I ran speed runs with Excalibur (1982 23 foot Albacore Special) last weekend with two people and a full tank of fuel. The boat has a 290 duo prop with 2.3 ratio using A5 props driven by the original AQAD40a 155 hp diesel. I ran the test with no tabs and the outdrive set to zero degrees in a calm sea on the backside of Anacapa. I read the gps speeds from a Lowrance LMS 160:
3000 RPM 21 knts
3200 RPM 24 knts
3400 RPM 27 knts
3600 RPM 29 knts
When I was doing 6 pack dive charters, I would cruise at 3200 rpm at about 20 knots with 18 scuba tanks and about 400 lb of misc gear. I usually cruise from 3000 to 3300 depending on the sea state and get about 3 nautical miles per gallon.
--------------------------------------------------------------------------------
#6, RE: cruising speed?
Posted by NoSlack on Oct-21-03 at 12:22 PM
In response to message #5
Thanks for the info on a DP/AQAD40 combo in a 23'. I still have the original 280 drive on my rig and was looking for some first hand knowledge what the DP drive would do for me.
I'm very encuraged by the numbers you stated and will start looking for a DP lower end for my drive.
I currently run 16-18 knots at 3000-3200 RPM.
Mike
--------------------------------------------------------------------------------
#7, RE: cruising speed?
Posted by Capt Art on Oct-21-03 at 02:14 PM
In response to message #6
Mike,
The Excalibur was built with the 280 and I upgraded to the 290 Duo Prop in 1987. The engine was lowered 1 inch and a new transom hole cut to accomodate the new outdrive and power trim system. Volvo recomended lowering the prop axis one inch. I remember that Volvo sold a kit with a one inch spacer and all the hardware for converting older single prop drives to Duo props. That might be the easiest way to do the swap.
I was amazed at how much better the boat ran after installing the new drive. The single prop makes a lot of noise which disappears when using the duo prop. The boat was much quieter, backed up with more authority, gained about 3 knots at cruise and used less throttle and thus less fuel. Best improvement I have ever made to the boat.
--------------------------------------------------------------------------------
#8, RE: cruising speed?
Posted by Saltwaters on Oct-28-03 at 07:33 PM
In response to message #0
We have a 26 Express that is inboard powered with a new Yanmar 240. We run at 2900 - 3000 rpms and go around 19 - 19.5. You are describing a problem we had with our old Volvo.
The boat is going slower than the seas are so handling is terrible. We like running it at 18 - 19 downswell. You have to go faster than the waves.
Bill on Tunacious