alu sailboat buliding - Page 5
RSS | Subscribe | Contact Us | Advertise | About Us
Page 5 of 79 FirstFirst ... 345671555 ... LastLast
Results 101 to 125 of 1957
  1. #101
    Join Date
    Aug 2009
    Location
    Central California Coast
    Posts
    10

    Re: alu sailboat buliding

    Quote Originally Posted by zeyang View Post
    regarding cutting of aluminium.
    Im using ordinary woodworking tools for cutting. Its pretty fast. I dont have plasma or waterjet.
    What type of blade do you use to make the Aluminum cuts? Amazing project. Continued good luck.

    Tom

  2. #102
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    Quote Originally Posted by mavman4 View Post
    What type of blade do you use to make the Aluminum cuts? Amazing project. Continued good luck.

    Tom

    No special blade. I took the one i had at hand. Sofar havent broke any blade. (im soon halfway) (only broke my bigger saw) if the air/cooling intake is close to the blade (on inside of blade) the small alubits could get in there which it did on my bigger saw and destroyed it. this saw is actually a little small. I will run it until it break and buy a worm driven saw instead with cooling intake as far away from the blade as possible (on other side)
    To make smoother running i give the blade a little oil every 1 meter of cutting. (stop and start again)
    Beware when cutting. Dont start the machine in this position, but take it up and let it go slowly into the metal at full speed. Never move backwards either when running and use full faceshield, both earplugs and earmuffs (its incredible noisy business) and be concentrated when using it.
    Attached Images Attached Images  
    Last edited by zeyang; 08-08-2009 at 12:13 PM.

  3. #103
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    almost finished plank 6 (the most difficult one on this project)Just some minor welding then its ok. (Ill take that after plank7)
    Working on plank 7. from now on, its all downhill :-)
    Attached Images Attached Images   

  4. #104
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    used some templates to make it easier to do the cutting.
    Attached Images Attached Images   

  5. #105
    Join Date
    Mar 2008
    Location
    Colorado
    Posts
    1,455

    Re: alu sailboat buliding

    Amazing project, thanks for sharing.

    FWIW: I saw this tool on TV yesterday. It looked interesting and cut right through 1/8" alum.

    https://www.dualsaw.com/
    9-11-2001......We Will Never Forget

    Retired desk jockey.

    Hobby weldor with a little training.

    Craftsman O/A---Flat, Vert, Ovhd, Horz.

    Miller Syncrowave 250

  6. #106
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    Hi,
    Maybe useful saw, but the airintake cant be behind the blade. (i couldnt see if it was on this one) Small alubits gets in and kill the cooling ribs. Ive already broken one saw do to this.

    Alu is really soft to cut.almost like wood. Even 5083 (4.5 Mg is soft enough with ordinary wood working tools.

  7. #107
    Join Date
    Aug 2009
    Location
    Mudpuddle Maine
    Posts
    24

    Re: alu sailboat buliding

    I think you'll get longer saw and saw blade life if you raise the saw until the teeth just break the bottom surface of the aluminum. You will have less blade making contact with the material and more teeth making contact with the material as you cut.

    Absolutely wonderful project you have there.

  8. #108
    Join Date
    Jul 2009
    Location
    Toronto
    Posts
    175

    Re: alu sailboat buliding

    If the saw blade teeth are just breaking through on the bottom of the aluminum then more teeth are simultaniously in contact with the aluminum. This will place more demand on the motor of the saw, and take longer to make a cut.

    The saw is already underpowered and should be replaced with a worm drive - my preference would be a milwaukee.

    Jonny knows this. And that dual saw does look tempting : https://www.dualsaw.com/
    Last edited by maarty; 08-17-2009 at 06:51 PM.

  9. #109
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    Plank 7 is on.
    Attached Images Attached Images   

  10. #110
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    a bit early to think about the rigging but..
    Im a big fan of chinese junk rig. they look so cool! Will probably choose something like this on my boatproject. A well balanced rig.
    Attached Images Attached Images      

  11. #111
    Join Date
    Sep 2007
    Location
    South Carolina
    Posts
    624

    Re: alu sailboat buliding

    Ok I have waited long enough - what are you going to name her ??

  12. #112
    Join Date
    May 2009
    Location
    NY
    Posts
    417

    Re: alu sailboat buliding

    Quote Originally Posted by 6010 View Post
    Ok I have waited long enough - what are you going to name her ??
    That my friend is the 64,000.00 question. Inquiring minds want to know.
    Lincoln Ranger 8 Lincoln 175 Drill press
    Lincoln 225 mig
    Plasma
    8 ft brake
    52" jump shear

  13. #113
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    Quote Originally Posted by 6010 View Post
    Ok I have waited long enough - what are you going to name her ??
    hehe. No idea!
    Im open for suggestion though!

    Ahh, found 2 old photos of this boat in a book i have. They used to be out in the winterstorm rescuing people. These guys on deck probably sailed more in one year, than I will do in a lifetime.
    Looks a little chilly out there.

    zeyang
    Attached Images Attached Images   

  14. #114
    Join Date
    Mar 2009
    Location
    Iowa
    Posts
    4,863

    Re: alu sailboat buliding

    A few name suggestions since you asked...

    Never Again
    Too Much Work
    What Was I Thinking
    I Should Have Known Better
    Hope it Floats
    Blow Me
    For Sale
    Dud


  15. #115
    Join Date
    Feb 2008
    Location
    North of Philly
    Posts
    20,421

    Re: alu sailboat buliding

    I like "Blow me"

    I think it should be " For Sail " instead of the other way.

    You might also do

    "Divorced"
    "New Wife"
    "Hers" on the main hull. "mine" on the towed dinghy
    "Sank my Marriage"

    I'll add "Bottom's up"
    Last edited by DSW; 08-21-2009 at 08:30 PM.
    .



    No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth!

    Ronald Reagan

  16. #116
    Join Date
    Jul 2009
    Posts
    157

    Re: alu sailboat buliding

    "Blow Me" haha I busted out laughing reading that one. Good job, I needed a good laugh today.

  17. #117
    Join Date
    Mar 2009
    Location
    Iowa
    Posts
    4,863

    Re: alu sailboat buliding

    It is a sail boat right....

  18. #118
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    Quote Originally Posted by Boostinjdm View Post
    It is a sail boat right....
    Yes. Lug/Junk rig sailboat. finish next year hopefully.

    zeyang

  19. #119
    Join Date
    Nov 2006
    Location
    Truro Nova Scotia Canada
    Posts
    1,721

    Re: alu sailboat buliding

    I would call it her " Alumintub "

    I am watching this post with great interest. Keep posting the pic's and updates as I can't wait to see her finshed. I envy you greatly on this project.

    Thanks for taking the time to post it.
    Miller DVI2
    Lincoln Precision Tig 225
    Thermodynamics Cutmaster 38
    Everything else needed.

  20. #120
    Join Date
    Jun 2009
    Location
    Arkansas
    Posts
    212

    Re: alu sailboat buliding

    I did'nt read through all the replies but If I were you I would back step weld to keep from warping. And like WHugh said, mig it . Tig it on corners and for cosmetic purposes.
    Good luck! My brother n law's good friend built two 60' aluminum catamarane sail boats with 6 cylinder Perkins desiel engines in each sponson(hull).pretty much everything was mig welded.
    Good luck! can't wait to see your pics.
    THE OLDER I GET! THE SMARTER MY DAD WAS!
    Thermal Arc 185 inverter Tig welder
    ABITIG 26 tig torch
    Lotus foot pedal
    Lincoln 225 stick welder
    Clark 185SG Mig spoolgunwelder
    Victor torch/regulators
    HF36" shear,bender,roller.

  21. #121
    Join Date
    Jul 2009
    Location
    Toronto
    Posts
    175

    Re: alu sailboat buliding

    I would love to see the pics of the catamaran.
    And Jonny, I think you should not put a junk rig on the boat. A junk rig is not as aerodynamically efficient as a Bermuda style rig; you will not be able to sail as close to the wind with a junk rig as you can with a flat sails.
    From the top pic of the series I can see that the old boat shown is either a schooner or a ketch; in any case, the balance of the rig refers to the relationship between the center of effort of the sails and the center of lateral resistance of the hull. Having a junk rig will not improve this relationship.
    If you want to exploit elements of the junk rig go with fully battened fore, main or mizzen sails
    The boat was designed for a flat sails, and changing that may be a mistake.

  22. #122
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    Quote Originally Posted by cmartman46 View Post
    I did'nt read through all the replies but If I were you I would back step weld to keep from warping. And like WHugh said, mig it . Tig it on corners and for cosmetic purposes.
    Good luck! My brother n law's good friend built two 60' aluminum catamarane sail boats with 6 cylinder Perkins desiel engines in each sponson(hull).pretty much everything was mig welded.
    Good luck! can't wait to see your pics.
    Wow. do you have pics of that catamaran?
    Its pretty much work making 60' alucat. I wonder if the marriage survived such project :-)

  23. #123
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    Quote Originally Posted by maarty View Post
    I would love to see the pics of the catamaran.
    And Jonny, I think you should not put a junk rig on the boat. A junk rig is not as aerodynamically efficient as a Bermuda style rig; you will not be able to sail as close to the wind with a junk rig as you can with a flat sails.
    From the top pic of the series I can see that the old boat shown is either a schooner or a ketch; in any case, the balance of the rig refers to the relationship between the center of effort of the sails and the center of lateral resistance of the hull. Having a junk rig will not improve this relationship.
    If you want to exploit elements of the junk rig go with fully battened fore, main or mizzen sails
    The boat was designed for a flat sails, and changing that may be a mistake.
    No plan to sail close to wind :-) I will be in the tradewind passage more or less.(like the old tea-clippers) Ill go for schooner to spread the load on two masts. Its pretty easy to switch back to gaff if dont like the junksail. I will never have bermuda on this boat. (which is also a mistake estetically i think) Ill already sailed some 10-20.000 miles with that on a smaller boat i have. Will love to try something different. Yes. its lug-rig is not very popular in the west, but its always interesting to try a new type of sails , and besides its pretty easy to sew the sail myself regarding lugsails.

    anyway. back to welding. sailfiddeling is still months away.

    zeyang

  24. #124
    Join Date
    Mar 2009
    Location
    Oslo,
    Posts
    1,120

    Re: alu sailboat buliding

    For those intersted in building something similar.
    here is drawing of boathouse.
    mostly 2x4' every 1 meter with 1x6 in between.
    wrapped with 450 gr/m2 plastic. (you get this in rolls of 1.5 meter wide)
    Length of building is 15 meter, wide is 8 meter, height 6 meter.
    roof has around 30 degrees to try to get the snow to fall off. (it didnt do always)
    its not possible to heat, so need to wear warm clothes in wintertime.
    cost around 2000-2500 USD for material and plastic. (some wood will be reused on boat) the plastic could ofcourse be used as sailcloth, but i stick to cotton cloth i think :-)

    zeyang
    Attached Images Attached Images  

  25. #125
    Join Date
    Jul 2009
    Location
    Toronto
    Posts
    175

    Re: alu sailboat buliding

    You do know then, that many boats have ended up on the rocks because they couldn't sail close to the wind.

    And back to welding: I don't think you should weld the hull fully from the outside first. I think you should install the stations inside the hull first, to minimize distortion, and maximize strength. Instead of wooden stations they could have been metal. It would have save a lot of work.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
RSS | Home | Penton Media | Contact Us | Subscribe | For Advertisers | Terms of Use | Privacy Statement