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Paul Weston Sea-Era

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jedi

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Joined
Aug 8, 2009
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2,156
Location
Sahuarita Arizona, Renton Washington, USA
history in model boat building !!



Yeah but they are all RC models not real full sized boats AND that's a massive major problem and why its a disaster
Please explain your logic. The scale factor in model boats due to wind and waves being full scale creates severe test conditions not frequently found in full-scale development. Power loading and the square cube law can be accounted for. Viscosity and spray distribution are other issues. Is that your area of concern?
 

tunnels

Banned
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Sep 6, 2014
Messages
559
Location
china is my home , place of work but was born in N
Scale down not up !!
I used to build models in my younger days as well and design boats as a hobby . I used the same information I used to design my models on bigger real sized boats but it was always different and never worked out properly, so I discovered was better to build by eye and draw boats out full size on a wall or on a flat clean floor and then work in reverse and scale down , Not up that way the shapes were different fractionally .
A professional boat designer friend and I id just that when we designed race boats and drew everything full size on a wall and could stand back and sight everything !! Save hours of heart ache an everything was in proportion always !!
 

Himat

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Joined
May 5, 2011
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2,868
Location
Norway
Scale down not up !!
I used to build models in my younger days as well and design boats as a hobby . I used the same information I used to design my models on bigger real sized boats but it was always different and never worked out properly, so I discovered was better to build by eye and draw boats out full size on a wall or on a flat clean floor and then work in reverse and scale down , Not up that way the shapes were different fractionally .
A professional boat designer friend and I id just that when we designed race boats and drew everything full size on a wall and could stand back and sight everything !! Save hours of heart ache an everything was in proportion always !!
Or learn the math and the physics.
Next work until the physics and math are understood.
Then learn to apply the math how to scale the right way.
Scaling is nothing but a math problem, but when scaling aeroplanes, boats and the like, there are traps that will catch anyone not paying attention to the physics involved.
 

tunnels

Banned
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Sep 6, 2014
Messages
559
Location
china is my home , place of work but was born in N
By designing full sized where ever possible its easier to see potential problems and get a much better idea of what the finished product will actually be like ! Finishing detail become much more obvious and easier to solve way before they become problems . You can literally put yourself in the picture an all the mumbo jumbo of scaling and calculations can be side tracked and arnt needed !!.
In reality still when building boats of any size i still use fairing Battens and find discrepancies here and there from CAD drawings and CNC cut frames as do other builders of racing craft !! Sorry computers don't get it right every time !!
 

mcrae0104

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HBA Supporter
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Oct 27, 2009
Messages
3,384
Sorry computers don't get it right every time !!
No, but my money's on the "mumbo jumbo," as you put it, of math and physics over "eye" every time, unless your last name starts with R, ends with N, and has UTA in the middle.

!!
 
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