Re: [beam] propeller shaft tutorial
> --- Jim Mullins <botart@...> wrote:Jim,
>> Hey Luciano,
>> I saw your micro stuffing box idea and thought it was great! Very
>> neat and sturdy looking design. I meant to reply, but lost track. You
>> can make homemade props that are any size and weight you like. The
>> idea is to get a small, thin, piece of brass sheeting (or aluminum to
>> save weight) and cut out a circle around the size of a dime or so.
>> Drill a small hole in the center so you can attach a small plastic
>> tube with a screw. Then, take a marker and draw three or four curving
>> lines from the outer edge to the center. Cut these lines with a set
>> of snips or sheers and curve the leading edge of the sections you
>> just created uppwards. Exactly the same as making a paper pinwheel.
>> You can see examples of this technique on my website under Fairbots.
>> The best thing about making your own props is you can adjust the
>> angle of attack on the blades to suit your application. You can make
>> them exactly the size you need, and they cost almost nothing.
>> See ya,
many thanks. See some pictures of my experimental bot in my folder. I think
I will try your idea and substitute the prop in this or in a similar
bot...and perhaps make a race. I will let you know what happens.