A25 displacement hull to semi displacement year?

[FrankD]

I’m looking for an A25 displacement hull in the NE and wondering what year or hull number the change was made?
Thanks

[kerrye]

Is there a particular reason why you are looking for the displacement version? The differences are pretty minor

[hetek]

There used to be a post pinned here identifying the difference and years made. Can't find it now though...

I believe that the last year of the displacement hull was 1972. The semi-displacement hull began in 1973. Of course, there is always the possibility of some crossing over during the transition years.

The dead give-away is the shape of the transom and aft portion of the hull bottom. That, and the fact the semi-displacement hulls were known as "DeLuxe" and had chrome "DeLuxe" emblems on either side of the cabin, forward of the side windows.

[hetek]

Hey I was pretty much right!

Found the thread I mentioned...

viewtopic.php?f=28&t=3355&p=19967&hilit=Deluxe#p19967

First post says it all.

[FrankD]

Thanks guys
I’m hoping for a full displacement hull because being a sailor, going 6.5 knots in a straight line is smokin! It will take less power to do that, be more economical and if a repower is needed, I really like the Beta 20 for multiple reasons. The 20 is lots for the displacement hull.
Thanks for your input and info

[kerrye]

I'd like to see the theoretical and experimental data which gets to the differences in power necessary for the displacement and semi-displacement hulls. My gut (which is often ill informed) tells me the differences are minimal. We're sailors too, but sail an F-24 so either version is damn slow.

[kerrye]

You do get better bow cabin cabinetry in the semi-displacement version in my opinion.

[FrankD]

I understand hull differences would be minimal really....
The earlier ones would be a bit “slipperier” and take lass power to get hull speed. In the end, it will be overall condition and price.
An F24 to a trawler is like a Ferrari to a woody station wagon...
But I get it
I still sail too, but wayyyyy slower boats

[DesertAlbin736]

Here is the essential difference between hulls:

Early displacement version (mine)

DSCN3631.JPG

And later DeLuxe version, in this case a 1977 that we almost bought but didn't for other reasons not connected to hull shape.

Albin (1280x960).jpg

I will say, having been treated to a (totally awesome) ride earlier this season on Sunsetrider's 1976 A25 with 36HP MD17C Volvo in Ontario, compared to our 24 HP Yanmar there's a marked difference in speed, and for whatever reason, noise level between the two. If it were possible to directly post video files here without first posting on YouTube & supplying a link, I could show you the difference between cruising at 6.5 knots and 8+ knots. But suffice to say the semi displacement kicks up a much bigger wake/stern wave than the early models like mine. Fuel consumption wise it's not that much different, maybe 2 or 3 tenths of a gallon per hour more with the DeLuxe version.

[DesertAlbin736]

PS, actually a bit off topic, but we swung through Ottowa on our way from Sharbot Lake/Kingston over to Quebec & on into Maine with our RV on September 3rd. Rainy day that day, but we wanted to see Canada's capitol.

20170903_133924.jpg

[FrankD]

Ottawa....home to politicians. Pembroke is upstream on the Ottawa River so we take solice in the fact our you know what goes downstream
It’s actually not a bad city. Home prices are still reasonable and although more crime than 30yrs ago....still pretty safe.

[FrankD]

Ottawa....home to politicians. Pembroke is upstream on the Ottawa River so we take solice in the fact our you know what goes downstream
It’s actually not a bad city. Home prices are still reasonable and although more crime than 30yrs ago....still pretty safe.

[kerrye]

Pretty close to the Petawawa River if my geography memory serves me correct. Paddled it in 1978.

[FrankD]

Yep...
I live close to both rivers...see each daily when at home.

[WillieC]

"there's a marked difference in speed,"...


Yeah, baby! Love that MD17C! (And the Narrows.)

IMG_1943.JPG