RCU Forums - View Single Post - Measuring max weight for boat
View Single Post
Old 05-21-2020, 01:42 AM
  #11  
mfr02
 
Join Date: Jul 2007
Location: Blackpool Lancs, UNITED KINGDOM
Posts: 1,432
Likes: 0
Received 32 Likes on 32 Posts
Default

Originally Posted by sirick
The reason is that the 3D print is gonna cost about 30 € .Also my professor wanna know before hand if the boat gonna handle the weight before he prints it. It is a time wasting procedure.
Considering sellable hulls cost way more, makes this information valuable.
Assuming that you have a dimensioned drawing of the intended item, follow the procedure that I offered earlier. Create yourself a spreadsheet to put the numbers into and let the formulas that you insert into the cells do the hard work.
The waterline is where you determine it is going to be. Look at pictures of tugboats to get an idea.
The center of gravity is where whatever you load it with puts it, both vertically, fore and aft and crosswise horizontally. The most influential item is usually the battery, but tug models often require ballast low down both for stability and trim. It might be a good idea while searching the internet to look up things like "center of buoyancy" and "metacenter".

One other way for a model - look for real manufaturers information involving hulls that closely resemble yours. Work out from their information what scale yours could be considered as being to, scale their information to fit. More maths, but you will learn about cube roots, which should please your professor.

Last edited by mfr02; 05-21-2020 at 01:45 AM.
The following users liked this post:
sirick (05-22-2020)