BBY UL-1 Sport Hydro

[Heath M]

New project while I wait for warmer weather to pour expandy foam into my Lobster hydro.
This is an ABS UL - 1 Hydro that I rescued from my brothers garage that has been gathering dust for the last 10 yrs.
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My Plan for this is to run it in our club Restricted sport hydro class, Aq 1700 motor and 45 amp esc on 4s.

[Heath M]

Started by adding the 2 sponson bulk head pieces which I will cut out at a later date to allow room for batteries.
To make the hull a little more rigid I laid down a thin layer of spray adhesive, then covered in fibre glass. Once this had dried, I mixed up some epoxy resin and soaked the the top of the fibre glass, I then added a 2nd layer of fibre glass over the top and gave this a good soaking.

[Heath M]

Next step is to trim the excess fibre glass and add expandy foam to the sponsons. This will be a test for when I do the Lobster.

[Heath M]

Fiberglass trimmed and expandy foam added to the sponsons.

[Heath M]

The hull is now nice and rigid with a good bit of weight in the front.

[785boats]

Looking good Heath.
I've always thought a UL-1 would make a good restricted boat.

[JimClark]

Will be interested in this build

[Heath M]

Thanks paul, I'm going to mod the sponsons to hopefully get it to run better. I remember Scott had trouble with his yrs back.I may even cut the front wing out too.

[JimClark]

So this is one of Andy Kunz's UL-1's?

[Heath M]

Yeah it's his design Jim, but molded by Randy.

[Mathieu]

Lucky you !!!

It was my brother's first hydroplane and damn we loved her

[Heath M]

Hull top and deck joined, I used JB weld,and made a bit of of a mess, but nothing a good sand won't fix.

[Heath M]

Sponson modifications done using black 1/16 styrene sheet.

[wuzofoz]

looking good heath. will be interesting to see how it runs.

[Heath M]

Thanks Warren, hope all this work is worth it ☺