I have just acquired a very vintage but useable Futura Mk2 4.2m Sport. I believe it is from 1990. Number on the plate is XDC 3639B 1990, rated for 50hp max.
I have reglued the transom and sorted other issues and will 100% not be putting a 50hp beast on it due to age of boat etc. probably just a 15hp - 25hp two stroke as I will be lifting it on and off each time I use the boat and it all has to fit in my car.
My major confusion is whether to buy a short or long shaft motor for this boat? The transom has a factory made cut out in it which makes me think Zodiac intended a short shaft.
The plywood transom is 15in high from the lowest point of 'V' on the keel, however if you add in the speed tubes, we get to around 18in - 19in overall. I have had other Sibs where the choice was more clear cut e.g. just a standard shaft motor!
As my boat seems to be from the Futura pre-history period, I cannot find a manual or brochure from c.1990 online
. At the moment I am thinking short shaft, but as I have not used the boat yet, I don't know how low in the water the speed tubes sit when on the plane - I guess this would depend on how much weight was being carried on board?
Anyway, pictures are not my actual boat but are the same model/year - excuse the internet grab, but haven't had time to take pics yet...
Any other vintage Futura owners [or anyone else] out there who have any thoughts on this choice? Would it be better to get a longshaft and then raise it up a bit, rather than get a shortshaft and have to cut down the transom if it cavitates at speed [transom is already only 15in] And do people think the motors in these pics are long or short shafts? I'm confused...