Slingshot inspired twin rigger

[rhomodel]

Some progress update: mold for the turn fin is ready and have laminated a curved sheet.
Turns out super stiff, but required quite some layers: 2 300 grams twill, 6 300 grans bi-directional, for a total thickness of 2.5 mm. The weight is even more amazining: have an inox one that weighs 162 gram, a Randy titanium that weighs 90 gram and then the carbon is only 45 grams! A little voice in me says can't be true, but it is really.

 

[rhomodel]

Also made an effort for tanks. Top will be CF, the bottom just glass. This as laminating without vacuum is quite hard on thick carbon weaves and the cloth is expensive. So I save efforts and $$ on other, visible, things. Anyhow here are the pics.

 

[rhomodel]

Some more, albeit slow progress. Tank halves are now ready. In the end decided for full carbon as a small part of the bottom half would show behind the booms, ruining the complete looks. A small effort and $$ investment now will pay off later (The white you see in the picture is just tape holding both halves together).
Not 100% sure how I will do the internal piping of the tanks: Traditional clunk and gas stopper (for gas boats at least), or the way the SS rigger tanks are build up with solid piping and may be a nice connection.
And than with tanks, booms and engines (these are also finally cleaned and assembled) it suddenly starts to look as a project that will actually be finished before spring! Still many, many, many things to do, but the heavy lifting base things, that are a slight bit out of my comfort zone, are now done.

 

[rhomodel]

Some more progress: tank fittings machined, drives mounted ( though only temp) and deck glued in place..

 

[K F Wheeler]

Any chance you would make another (...or more) turn fin(s) without holes to sell?
Ken

 

[rhomodel]

The home stretch is nearing.. Had all rigged up before starting painting.
What a difference a coat of clear can make: the color of the carbon fibers suddenly become alive. Also did a bit of lettering on the bottom.

 

[Wasted wages]

It's gonna take a whole lot of radio box tape on race day !!

 

[Rich Jones]

The home stretch is nearing.. Had all rigged up before starting painting.
What a difference a coat of clear can make: the color of the carbon fibers suddenly become alive. Also did a bit of lettering on the bottom.

View attachment 299819View attachment 299820View attachment 299821View attachment 299822View attachment 299823

Oooops!

 

[Rich Jones]

This is a really cool project! Can’t wait to see some video on the water!

 

[rhomodel]

Thank you for the nice words. Yes lots of tape, though I only need access in 1 hatch and not all 6. There are 4 compartments ( like the titanic...) so hope it has enough bouoncy if something goes wrong.
I showed the underside painting, but also made a smaller deck logo.
And then finally not all goes right all the time: the rear sponsons have special 3d effect painting unfortunately.
So next goal is to work on front sponsons and a hood... I think I will make something Whiplash inspired...

 

[rhomodel]

So..... finally in a shape that I think the boat can be tried on water. After 4 months on intense building didn't fancy for some last minute nice to have, just want to get it on the water and make a spin...
So hood is a bit crude, sponsons in raw format (but spend like 5 minutes making something to stick to it)..

 

[Rich Jones]

So..... finally in a shape that I think the boat can be tried on water. After 4 months on intense building didn't fancy for some last minute nice to have, just want to get it on the water and make a spin...
So hood is a bit crude, sponsons in raw format (but spend like 5 minutes making something to stick to it)..
View attachment 300056View attachment 300057View attachment 300058View attachment 300059

Get someone to video please! That’s gonna be a handful!