PDA

View Full Version : Blueprinting?



dazigg
03-19-2012, 07:23 PM
Exactly what does this refer to? Seen it mentioned a couple times on different threads.

transomstand
03-19-2012, 07:45 PM
Changing something to a more precise tolerance than stock. Can be done with almost anything, engine, boat bottom, propeller, etc.

If we could only find some way to apply blueprinting to posts in the politics forum...........:rolleyes:

Ted Stryker
03-19-2012, 08:06 PM
In reference to a hull it means to make things straight that supposed to be straight, intended flatness gets flattened, intended sharpness gets sharpened, foils lips and curves get treated to yield the intended curvature, etc. with matching symmetry to port and starboard..

Like most things, to do it 1/2 arsed is relatively easy... To do it right isn't nearly as easy...

TooStroked
03-20-2012, 05:40 PM
Think of it as "optimizing within factory tolerances." For an engine, let's say a certain factory spec is 3.000" +/- .010" - just as an example. So your factory engine might be anywhere between 3.000" and 3.010" and still be "within specs." But let's say that the engine runs best with that particular dimension set at 3.002". Blueprinting it would get that particular measurement right to the optimum - which is 3.002". When it comes to things with multiples - like cylinder bores for instance - it would also mean getting all of the cylinders to that same optimum dimension. (They're usually all over the spec range.)

When blueprinting a hull, it generally means straightening out at least the wetted running surface of the boat to make it perfectly flat. In addition, sharpening up the lifting strakes, outside chines and transom break will make a huge difference in how a boat handles.