Sprint Cat 42 FE Rebuild

[Dirk Jan]

Great work and thank you for sharing photos and how to.
What kind of setup are you planning for thus hull?

[Mike W]

This will be a NAMBA T Offshore single.

[Dirk Jan]

I'm from Europe, and not familiar with the different NAMBA classes. What kind of motor and esc will you use and what kind of prop?

[Mike W]

Oh, it will by a 10S setup with a 56mm ~800-900KV motor on maybe a X462 or 2215-ish prop and a SF300 Pro+ Lite ESC. Not my boat I'm just restoring the hull for a customer. You can see my builds on FB Otto RC Marine. I post a few here to generate interest in this type of work, share some techniques, and hopefully learn something new if someone knows a better way!

Got her cleaned up again. Sanded seams. You can see the slightly increased rake in the hull and narrowed hatch flange to make battery clearance. I'll add a hatch opening edge support brace about in the middle for extra strength and to hold the necessary clearance.

The rear lamination came out great where I cut that long notch to allow some curvature. I taped over it with scotch tape before prefilling the radiuses along with this notch and laminating the reinforcement on. You can run your finger along the flange and not even feel it!

[srislash]

Fabulous job pal. I love these big guys ripping at 70 and hammering corners full tilt.

[Mike W]

Fabulous job pal. I love these big guys ripping at 70 and hammering corners full tilt.

Thanks Shawn!

Tacked in some deck supports last night. These will need glass reinforcement later.

Today I closed up the nose and created the center front deck flat. First I cut and fitted the foam along with another 6mm CF tube ahead of the 12mm. A quick fillet along the front of the deck support and the first layer began there and up. Then the foam was fitted and the initial layer of 6oz glass laid across and just around the front edge.

Radiuses we made on the top and back sides of the foam since the laminations could only butt up the sides. These were then prefilled for bond strength to the sides and back, and subsequent layers applied for a total of four over the foam. The first including the deck support and slightly wrapping past the front and underneath. the second over the foam only, The third from the hatch flange about an inch past the radius underneath and the third from the hatch flange 2" past the radius underneath.

Filler work and primer is next!

[fweasel]

Damn that's a lot of work. Is the owner attached to the hull? Regardless of the why, the how is awesome to see play out.

[Mike W]

Damn that's a lot of work. Is the owner attached to the hull? Regardless of the why, the how is awesome to see play out.

He is now. I get carried away sometimes with these builds. Finished up the bodywork it's ready for primer.

[koen]

looks very good mike

[Peter A]

Just wondering about the actual hatch now (what it looks like) the front deck has been flattened?
I have just picked up an undrilled hull. It came with a sprintcat hatch and a gas hatch mould. Neither of them I like. I am thinking of putting an F1 style top on it.

[Mike W]

looks very good mike

Thanks koen!

Just wondering about the actual hatch now (what it looks like) the front deck has been flattened?
I have just picked up an undrilled hull. It came with a sprintcat hatch and a gas hatch mould. Neither of them I like. I am thinking of putting an F1 style top on it.

Yes, I was waiting for primer to post another pic. It is a very basic long low bubble canopy.