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I have think that hybrid shaft too, aluminium can handle torque and power easily, only problem is longitunal bending strenght. Carbon UD tube inside aluminium tube could work, but carbon-aluminium do somekind of eletric corrosion effect. There have to be aome inulation between, like fiberglas layer. Maybe carbon tube don't have to be bond to aluminium, then their different mechanical properties doesn't fight each other, who knows.
aluminium shafts give me base calculation line too, all this "knowledge" is just calculations and thinking, no real data yet. I can't be sure is 3500rpm limit real or not, it may be more or less. Next summer we will be wiser. I have 18x28, 17x33 and 16.5x34 props, all four blades. 17x33 should be top speed props if this fat girl get on plane with them. Four speed transmission make really big help for everything, you don't have to worry spooling or anything at lower speeds. |
Originally Posted by ksalmine
(Post 4943259)
I have think that hybrid shaft too, aluminium can handle torque and power easily, only problem is longitunal bending strenght. Carbon UD tube inside aluminium tube could work, but carbon-aluminium do somekind of eletric corrosion effect. There have to be aome inulation between, like fiberglas layer. Maybe carbon tube don't have to be bond to aluminium, then their different mechanical properties doesn't fight each other, who knows.
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3D CAD design had begin in cabin. CAD means CArdboard Design. I can't make this complicated planning just inside head, I have to see and feel how you can move, how much free space, etc there will be.
https://cimg6.ibsrv.net/gimg/www.off...5ba83aa655.jpg https://cimg9.ibsrv.net/gimg/www.off...799c6c5030.jpg Under sofa I wonder to fix roller blind mechanism so cloth can be stretched to roof making own cabin for Minnie (the little girl). Backrest could be lift up so if sofa is sofa backrest is down and when sofa is as bed, backrest can be lifted up so bed get wider and backrest cover hull windows to get cabin darker to sleep. https://cimg0.ibsrv.net/gimg/www.off...6867d2a1e5.jpg https://cimg5.ibsrv.net/gimg/www.off...56b63841c9.jpg Next winter I blow that sh#tty design toilet off and build better with real shower possibility. It may be 15cm longer too but there is still good space for storage between sofa/ little girl cabin. Toilet have to get good heating and ventilation so it can be used as a drying cabinet too. It will be nice to get clothes dry as quick as possible if trip get rainy. https://cimg1.ibsrv.net/gimg/www.off...07bf96ca9e.jpg I really want dinner table and seats, table is too small and little too low now but close to good. Storage is more important than fancy round shapes, Real one won't be this square but close so I can make drawers in every empty space. I want convert this boat from dayboat to real cruiser so I can make two week trip with my family on the Finland coast or across nordic countries. https://cimg2.ibsrv.net/gimg/www.off...e8e3bdbf2b.jpg Floors weight 2kg a piece, not bad for 2meters long boards, they feel rock solid. I think Fountain 47' could be convert to fast, good rough weather cruiser boat where you can live vacation time onboard. What you think? 120mph home on water, maybe, maybe not, who knows, but nobody had ever tried build one before this. |
This thing will be soooo cool.
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Early Cig cabins were well setup.
https://cimg4.ibsrv.net/gimg/www.off...19ab0b008c.jpg That is what I'm looking to do. Have the table move down to become a berth. One thing I found out...the little ones don't stay little for long. Better to plan for future size needs. |
I almost forgot to ask:
How is it handled in Finland regarding the registration of a vessel that uses a non-certified engine? I’m asking because I had major difficulties registering a speedboat that has a home-marinized LS 6.2-480 engine installed. |
Thats no problem this old boar, I don’t be sure how it works for newer boats but you can just write what engine you have in registeration net site. I register this for Polish Wola V12 engine, it’s same than transmash, these engines have any serial numbers anyway. Insurance is different story.
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I’m asking because I personally had real difficulties, and perhaps the following words may help. I resolved the complication by obtaining a German temporary residence, joining a German nautical club, and then not registering the vessel as older than 2008. I obtained permanent German registration, and German insurance companies insure it for me.
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Long time, no post. A lot have happened, but I have been lazy to upload pics and write here. Looks that people don't build anything special on OSO anymore, just outboard crap that I don't give a sh#t, it's sad. I miss big silver cat and kidturbo outlaw. By the way, is that skater in use or dusting somewhere?
https://cimg8.ibsrv.net/gimg/www.off...88e04fbaca.jpg Driveshafts are out, end pieces have to re-use https://cimg6.ibsrv.net/gimg/www.off...d898bcdc0c.jpg Exodus to lathe when turning carbon fiber,dust go everywhere. Luckily my -60's swedish garage lathe don't care. https://cimg5.ibsrv.net/gimg/www.off...9930d44ce6.jpg Ends sandblasted and O ringed for new gluing. https://cimg3.ibsrv.net/gimg/www.off...490b57101d.jpg New injection lines, I had to make injector extensions so normal end tubes can be used, last ones had long hollow bolt end to fix tube to injector. Now extensions allow use normal M14 ends in both ends. https://cimg1.ibsrv.net/gimg/www.off...e4187ebd74.jpg https://cimg9.ibsrv.net/gimg/www.off...6469db073e.jpg Special big radius bending tool from plywood, it works way better than looks.... https://cimg5.ibsrv.net/gimg/www.off...3c269ae548.jpg https://cimg8.ibsrv.net/gimg/www.off...909f3e2b87.jpg Lines are ready, heavy 10x25mm solid flat aluminium bars fix lines together and prevent vibration and line cracking. https://cimg2.ibsrv.net/gimg/www.off...40c1fdb007.jpg https://cimg3.ibsrv.net/gimg/www.off...6d48910162.jpg Turbine housing heat shielded, KKD motorsport make very nice job!!! If you need insulating somewhere, I recommend Kalle, he are professional. KKD have parts,turbos and soon light stainless V band turbine housings, they will be very good for marine use. https://cimg0.ibsrv.net/gimg/www.off...fd47e2f363.jpg https://cimg1.ibsrv.net/gimg/www.off...d894867157.jpg Last summer smoky running was due to leaking turbos, they leak oil to compressor and turbine side. Breather was way too small after I remove crankcase vacuum pump because it seized. I really want this massive diesel running without any smoke like nowadays engines. https://cimg9.ibsrv.net/gimg/www.off...62e96c5ca4.jpg https://cimg7.ibsrv.net/gimg/www.off...2ae37b8e0f.jpg Solution is bigger breather, I found very nice vacuum cleaner cyclone with see through tank. Now it serve as oil mist separator and puke tank, clear part is easy to remove and empty. hose size is 50mm, it should be more than enough but 2372cid engine will blow through like 1.6l toyota from exhaust pipe at full tilt. https://cimg5.ibsrv.net/gimg/www.off...dce03a5b84.jpg https://cimg4.ibsrv.net/gimg/www.off...8453912cb4.jpg https://cimg6.ibsrv.net/gimg/www.off...0205a23674.jpg Interior parts are made from carbon fiber and Airex core foam, very light and stiff. Who else have carbon fiber kitchen and dinner table:cool-smiley-011: Many other things in boat are going forward too but post is coming so long that people get tired to read, so more updates next time, stay tuned. https://cimg0.ibsrv.net/gimg/www.off...d260b1889b.jpg By the way, I have full time employee now, 4 year old can disassemble surface drives easily. |
Thanks for posting! Trust me, your project is in the top 3 of all time. VooDoo is/was cool, and the Silver Cat was pretty intense too. However, yours is the best in my eyes!! I'm really looking forward to seeing your beast running!
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