Sorry for the drawn-out description! I guess I tried to attach too many pictures to my original post. The only other thing I wanted to note was that the whole thing is built on 1/4 inch plywood to save weight, glued to a circle of extruded EPS foam to keep it off the ice. I used a little bracket (shown in the pic attached to this post) to fasten one end of the mini-shock cords that hold down the battery at the base of the ball mount. I hope I’ve shown a couple of tweaks to the good designs in this thread!

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Here’s another pic of the cord. Just a couple of short pieces of 1/16 brass rod, spade fittings, soldered and shrink wrapped.

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Still having trouble posting. If it works, attached is one picture of a DIY power cord.

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Seems like there is still some interest in Helix shuttles. I’ve been inspired by all of the posts on this thread, and I’ve got a few tweaks that others might find helpful. The transducer cup shown in the last post is a 2″ copper sweat-on end cap – perfect fit for a XI-9-20 transducer. I drilled drain holes and mounted it with acorn nuts so the ducer won’t freeze in the cup.

Another shuttle. This is my third time trying to post. If it works, I’ll reply with more text and more pics.

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