Seems like we have had another problem with building RC-multies. I dont want to go trough details and seek for guilty parties, but I am worried.
Ernst summed it up: 4 different builders have tried and so far we have 4 different failures, some more severe and some less. Some have been just delays on delivery ( wich in most cases have been agreed between builder and customer ) and some have had their reflections on the boards.
But what is wrong here? From my experience I can pinpoint out at least a few problems similar in these 4 cases:
Builder related problems:
The estimate of the work involved has been miscalculated.
The cost because of work miscalculation is highly miscalculated
Business related problems:
3. A boat is sold first and built afterwards leaving no money for the builder if something is not going as planned. However this has not been the case in all cases
- Primitive working methods, I have not heard anyone using female moulds or vac-bagging.
What is difficult is that you actually need 6 female moulds to complete the boat. 1 deck mould for float, 1 Bottom mould for float, same 2 in mainhull and 1-2 beam moulds. thats 5 more than on monohull. If we use pipe as beams, the moulds needed are still 4. The moulds cost like 2 times of a completed boat, wich means that if you have like 20% of profit from building ( moulds excluded ), you need to sell 10 boats to cover your mould expenses. Also Monohulls have only 1 Hull to deck-joint, Multihulls have 3 + 2 beams. Also
Multihull classes, Mini 40 and f48 etc allow certain sail area. The idea originally was to make a no limit experimental concept. However if we would limit that Marblehead A, B and C rigs are allowed and adjust the rule to fit into the largest marblehead rig, we would have many rigs ready for use from boats wich would sit on the shelf otherwise. this would put the design and developement focus to the platforms and maybe in some time someone would have such a good concept to a platform, that the moulds would be profitable.
Ok there was a short analysis, Feel free to gun it down or whatever
Edit: I didnt want to refer all unsuccessfull projects as equal ones. Some projects have been compensated without any problems.
Edit2: I claimed that no one is using female moulds ( Successfully or unsuccessfully ). This is wrong information, as Dough Lord from microsail is using female moulds, at least according to the microsail website.
“Expertice is gained trough mistakes. However repeating
same mistake is not learning but stupidity.”