rolling start of the mini 5.6 race

America's Land Sailing Cup  2014

at Ivanpah, Nevada

Mother's Day weekend at El Mirage, California
Winds were at 30 mph plus

Question


Tim M.  Question?

"I have just a few questions, please.

1.  You have estimated the construction cost at around  $250.00. Does this include the tools, mast and sail?.


2.  I see there are several bends in the tubing, How do we bend tubing without a tube bender? Cheap ones cost about $500.00 with dies.


3.  Can a Lincoln wire feed arc welder be used for the job?


4.  Can you supply a list of fabricators that are willing to make some of the parts (like the support ring that connects the three arms holding the mast tube). Nice design, I will order if you can help me with these questions.

Respectfully,  Tim  M.


 Answers

Hi Tim,

Thanks for taking an interest in my sat of drawings. I can best answer your questions by telling you how I completed my project boat. My goal is to produce a boat without the need for a complete machine shop that may include a milling machine or lathe. All the parts can be easily fabricated with only the tools listed below.


The major tools that I had on hand:

1.   Small table saw

2.   Small drill press & bits

3.   4" table vise

4.   7" bench grinder with wire wheel

5.   Small Lincoln wire welder

6.   Small saber saw

7.   Miscellaneous small tools, (screw drivers, files, clamps, etc.


The tools that I bought for the project:

1.   14" carbide chop saw = $65.00

2.   3 1/2 " carbide hand grinder = $12.00

3.   Extra blades = $6.00

4.   1 1/4" conduit / tube bender


Some of the materials used:

1.   1 1/4" x .062 wall x 20' long, hot rolled steel

2.   1 1/2" x .080 wall x 20' hot rolled steel square tube = $17.00

3.   1/8" x 7" x 18" plate = $10.00


The only required bends are 10 & 30 degrees. These bends were produced with a EMT conduit bender. To assist with the proper bend measurement and trim of the compound angles on the ends of the tubes, I have included tool drawings for a simple trim and weld fixture.


The parts you refer to that may need help from a fabricator, I call them "Mast Tube Collar Assembly and Mast Strut Assembly." These parts I fabricated with the chop saw, bench grinder and welder. The plans show in detail, the method I used. The Sail, Mast, and Boom can be obtained for as little as $100.00 or  possibly $50.00, and with a little extra effort, I acquired my set for free. Hence, you have a finished boat for less than $250.00