Love the conversions guys. So much in fact, that I've acquired one to play with too.
I'm in the process of dismantling completely so I can see what's hidden away where little fingers were never meant to go. I've also found that it is made not to be parted, however, for the benefit of anyone else who wants to dismantle and adapt one of these RIBs (or SIBs if it is going to be a Y-Boat), heres what I've found.
The coloured seat/floor assembly is held in place with two self-tapping screws and a concealed fastener. One of the screws is quite obvious, as it holds the vertical driver support about 20mm forwards of the transom.
The second screw is a bit sneaky. It is sunk into the base of the seat-box and then the head is is hidden by a flush fitting cap - if you don't find this fixing and/or don't undo it, you will put a hole through the bottom of the boat when you attempt to prise the seat assembly out
The third fixing is a sliding-clip keyway-type thingy concealed in the bow. You don't need to do anything with this one though as it is released when, having removed both screws, you lift the coloured seat/floor assembly slightly and then pull it backwards.
I think the boat may be a tad smaller than a 1:12 Y-boat (possibly 1:13 to 1:14), but I haven't found consistent Y-Boat specs either!
Anyway, the measurements are -
Length: 240mm (9 1/2")
Overall Width: 110mm (4 5/16")
Inside Width: 53mm (2 1/8")
Tube Diameter: 27mm (Not incl 1mm rubbing strips)
Now then, where's that filler...
Andy
Details altered at Andy's request