Mhz mystic 114 build

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Hello gang. Gonna do a build thread on my new speedboat project.

It's been around 25-years since I've had a powerboat. Last ones I had were a HydroSport Radioactive .21 tunnel, and an AC Magnum cat, with an OPS-67. Sold them as a youth, to pay for food.

I am trying to scratch-build myself a new "Footy" sailboat to get back on the water, but it's taking too long. https://www.rcgroups.com/forums/show...lf-a-new-footy

So ordered a MHZ hull kit bundle.

Around 25-years ago, prepping an octura prop was a joy. No longer. After this set of props, I will gladly pay for matched/ballance/polished/sharpend props.

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More to come, once the hull kit arrives.

[srislash]

Yayy, a new build. Yeah matching a pair is a pain. I certainly don’t mind doing a single. What size props are those? 447?

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Gonna start with x442's. Might even get some of those scale alu props to see if they last for fun-running.

SAW has no interest with me, and coming from the last boat I ran (Footy sailboat, which are like controling a leaf blowing across a pond), anything faster than 10km will be a blast.

[srislash]

Gonna start with x442's. Might even get some of those scale alu props to see if they last for fun-running.

SAW has no interest with me, and coming from the last boat I ran (Footy sailboat, which are like controling a leaf blowing across a pond), anything faster than 10km will be a blast.

I hear ya. I built my HPR 115 to run 7-8s and 120mph but in the end I run it on 4s so I don’t destroy it.

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Nice vid.

Props are almost done. Gotta make some profile imprints, to make sure the blades are all the same shape. Also, one hub is longer on one of the props, and the one prop weighs 1/2 a gram more that the other. I tell ya, the mold for the Octura X442r needs retooling. They should be all cnc stainless in my opinion... I just learned of Doctor Props...

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Kit showed up

Ya, their hand-lay-up skills don't exist. Amatures who don't know the concepts of basic lay-up; or, disgruntled workers, purposely doing sucky work.

The canopy and the hull / deck lay-ups look good. The joining of the hull / deck is terrible.

I have to cut the hull / deck in half, clean up the crap, and re-join it professionally.

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Had to do this:

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More to come when it's cut in half.

[vvviivvv]

If you aren't going for all and out speed, do you really need to go through the effort of cutting the hull in half?

I would press around the hull and make sure all of the carbon kevlar is saturated with resin, i've heard of them not using enough and some hulls being "soft" in areas.

I only have a mystic 84 but it was laid up by non MHZ and it's a solid 130mph boat, F-ugly but strong & fast.

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Oh ya. All will see what The "shoddyness" is when I cut it in half. The transom seam reinforcement was thrown in. Not even mashed-down with the brush, and not rollered-out (I don't even think their builders know what a hand-lay-up roller is. Using a light shows an area where there is no seam reinforcement over the gelcoat. But the worst is a massive air-voids in the seam lay-up, that is too big to be a missed area of laminating. You'll see when she's in half.

As for my standards, I once challenged anyone in world, to do a better hand-lay-up than me. My boats and products were the best quality lay-up hands down.

Some of the best I produced:

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Now that I'm old, the skills are rusty and It would take a lot of practice to build like that again.

I just want to get in the water. A new sailboat project is taking too long, so figured instead of making a powerboat plug / mold / parts from scratch, like the sailboat, I'd whip-off a powerboat build.

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Chooped her up

Here is some of the shoddyness:

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I cleaned up the hull and deck, then will re-reinforce areas where I removed bad lay-ups. I will then prep the entire lay-ups of the hull & deck, and add a layer of 6oz. carbon fiber cloth to them both, then prep the seam for joining and reinforcing propperly.

[srislash]

Wow, I admire the undertaking. I’ve wanted to do it a couple times and did cut a plastic graupner hull in half once but. Have yet to do this

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Wow, I admire the undertaking. I’ve wanted to do it a couple times and did cut a plastic graupner hull in half once but. Have yet to do this

Ya, It's a process that I hoped I didn't have to do, but I just compare it to building one from scratch, making plugs molds etc. That's how I trick my mind into doing it.

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Hatch work

Mudded and filled things, for a smoth appearance. Then made a larger "foot", to press down on a future foam seal. I don't like the using tape to seal the hatch method.

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[srislash]

Very nice work there!

[PlayerUnknown069]

What esc and motor combo did you end up going with? I’m deciding on the Hydra X or XLX2

[vvviivvv]

Depends what you want to do...

I have X8s in a Mystic 84 (84cm) it's a non MHZ SAW hull copy that is maxing out the X8s but im also pushing for high speeds

I'd go for XLX2 and if i ever fry a As26-XXX i have in my HPR115 / C5009 i'd get a pair of XLX2