<div dir="ltr">Now that "bi-directional" prop idea is out of the box and original! It would probably give a prop expert seizures just thinking about all the ways it would complicate the calculations, but I'm looking forward to hearing how well it works.<div><br></div><div>Alec</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Jul 13, 2015 at 12:47 PM, hank pronk via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi All,<br>
I just built a propeller modification for my vertical thruster. I hate how the thruster pushes the sub downward so well but does not work as well pulling the sub up. The reason of coarse is, propellers suck in reverse! So I built a hub and mounted two props, one in the reverse direction to the other. The props are spaced 4 inches apart. Also when I mounted my new ballast tanks, I blocked the flow of water, so, I will mount the new thruster in a new location. Oh ya, I used two smaller props so I donèt over work the motor.<br>
Hank<br>
<br>
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