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A25 displacement hull to semi displacement year?
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DesertAlbin736
- Gold Member
- Posts: 2777
- Joined: Sun Mar 09, 2014 3:58 pm
- Home Port: Peoria, AZ USA
Re: A25 displacement hull to semi displacement year?
How am I going to keep up with you when we do Desolation Sound next year?
La Dolce Vita
1971 Albin 25 #736
Yanmar 3GM30F
Gig Harbor Boatworks Nisqually 8 dinghy
Residence: Peoria, AZ
Homeport: Lake Pleasant, AZ & beyond
1971 Albin 25 #736
Yanmar 3GM30F
Gig Harbor Boatworks Nisqually 8 dinghy
Residence: Peoria, AZ
Homeport: Lake Pleasant, AZ & beyond
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NickScheuer
- Gold Member
- Posts: 485
- Joined: Fri Aug 19, 2011 5:14 pm
- Home Port: Rockford, IL
Re: A25 displacement hull to semi displacement year?
"Bigger wake for the semi-displacement"? I think not. Our 1976 with her original MD17C exhibits a very mild wake at 1800rpm and just a tad less than 8mph.
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Sunsetrider
- Gold Member
- Posts: 488
- Joined: Fri Jun 28, 2013 6:49 am
- Home Port: Gananoque ON
- Location: Sharbot Lake Ontario Canada
- Contact:
Re: A25 displacement hull to semi displacement year?
WilleC - I can't tell which number is the speed at those revs.
1976 Albin 25 Hull 2529
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FrankD
- First Mate
- Posts: 43
- Joined: Wed Oct 18, 2017 6:01 pm
- Home Port: Pembroke Ontario
Re: A25 displacement hull to semi displacement year?
1700 rpm and 11.7 knots!!!
What will it do wide open?
Could water ski behind that!!
(Through the narrows)
What will it do wide open?
Could water ski behind that!!
(Through the narrows)
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WillieC
- Gold Member
- Posts: 2285
- Joined: Wed Nov 13, 2013 10:48 am
- Home Port: Hood Canal, WA
Re: A25 displacement hull to semi displacement year?
Frank has it right, 1700rpm and 11.7 knots. (Click on picture to set it aright and click again to zoom in.) We had to do the south sound just for that reason. We were still a couple hours before max flood tide. And I left the motorcycle helmets home, whew!
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Sunsetrider
- Gold Member
- Posts: 488
- Joined: Fri Jun 28, 2013 6:49 am
- Home Port: Gananoque ON
- Location: Sharbot Lake Ontario Canada
- Contact:
Re: A25 displacement hull to semi displacement year?
Like shooting rapids! I did see those numbers, but thought I must be misunderstanding.
1976 Albin 25 Hull 2529
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DesertAlbin736
- Gold Member
- Posts: 2777
- Joined: Sun Mar 09, 2014 3:58 pm
- Home Port: Peoria, AZ USA
Re: A25 displacement hull to semi displacement year?
For comparison (screen shots of video clips)
Stern wave/wake of Sunsetrider's A25 DeLuxe "Manatee" with 36 HP Volvo MD17C cruising Thousand Islands at what, 11 knots?
Stern wave/wake of 1971 displacement A25 "La Dolce Vita with 24 HP Yanmar 3GM30F cruising British Columbia at 6.5 knots & 2,350 RPM
That's the main difference horsepower & semi-displacement hull makes.
Stern wave/wake of Sunsetrider's A25 DeLuxe "Manatee" with 36 HP Volvo MD17C cruising Thousand Islands at what, 11 knots?
Stern wave/wake of 1971 displacement A25 "La Dolce Vita with 24 HP Yanmar 3GM30F cruising British Columbia at 6.5 knots & 2,350 RPM
That's the main difference horsepower & semi-displacement hull makes.
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La Dolce Vita
1971 Albin 25 #736
Yanmar 3GM30F
Gig Harbor Boatworks Nisqually 8 dinghy
Residence: Peoria, AZ
Homeport: Lake Pleasant, AZ & beyond
1971 Albin 25 #736
Yanmar 3GM30F
Gig Harbor Boatworks Nisqually 8 dinghy
Residence: Peoria, AZ
Homeport: Lake Pleasant, AZ & beyond
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Sunsetrider
- Gold Member
- Posts: 488
- Joined: Fri Jun 28, 2013 6:49 am
- Home Port: Gananoque ON
- Location: Sharbot Lake Ontario Canada
- Contact:
Re: A25 displacement hull to semi displacement year?
We were running at 2300 rpm but I don't think I checked the SOG. We were clipping nicely along. It was our first good run after getting the tach working - it had been out of commission for a season and I had been reluctant to push the engine without knowing the revs. Fun day!
1976 Albin 25 Hull 2529