G.r.p. A frame

[Sonar]

G.R.P. A FRAME

Any ideas the forum may have
thinking now on an A frame just to hold

Navigation lights

Anchor light

Ariel

Gps receiver

Radar reflector.

I would like to make it in glass fiber .I have seen a few on some overseas ribs.


any comments welcome.

[biffer]

Originally Posted by Sonar

G.R.P. A FRAME

Any ideas the forum may have
thinking now on an A frame just to hold

Navigation lights

Anchor light

Ariel

Gps receiver

Radar reflector.

I would like to make it in glass fiber .I have seen a few on some overseas ribs.


any comments welcome.

we haven't had much luck with grp a frames, you have to make them in 2 parts and bond them together, we did a mould and moulding for a large swan sailing boat and it was a right bugger, ocean did one in the early days, you will always get stress cracks on them

[Sonar]

Originally Posted by biffer

we haven't had much luck with grp a frames, you have to make them in 2 parts and bond them together, we did a mould and moulding for a large swan sailing boat and it was a right bugger, ocean did one in the early days, you will always get stress cracks on them

I thought that as well a two part mould but the joining of the two parts may be a problem so far as strength goes.

but where there's a will there's a way.
thinking on it now might have come up with an answer but its a long winded way of doing it.

[biffer]

Originally Posted by Sonar

I thought that as well a two part mould but the joining of the two parts may be a problem so far as strength goes.

but where there's a will there's a way.
thinking on it now might have come up with an answer but its a long winded way of doing it.

you could lay up a frame like a "c" shape and then a panel that fits into the inside, does that make sense?

[Sonar]

Originally Posted by biffer

you could lay up a frame like a "c" shape and then a panel that fits into the inside, does that make sense?

Then epoxy one into the other.
While leaving a hollow section for wiring sounds a good idea.

[Sharkbyte]

How weird is that? I was googling 'grp a frame' only last night. Nothing turned up, bar standard factory issue affairs.

Currently experimenting with a view to building something special for my 4.7 Futura SIB.

[Sonar]

Originally Posted by Sharkbyte

How weird is that? I was googling 'grp a frame' only last night. Nothing turned up, bar standard factory issue affairs.

Currently experimenting with a view to building something special for my 4.7 Futura SIB.

Sounds interesting .

[9D280]

Just going to chuck a thought in here......

Could you use a windsurfer mast or two as a basis, then you only need to design the corner fixings / crossbar which as it needs flat aea to mount your toys, would be a whole lot easier to mould a hollow section (vould do it like a laser dinghy, but in miniature) - Mould "pole inserts" into the ends, 'poxy the whole lot together, Job done!

If you fixed the verticals to the transom using U- bolts then you run the cables up through the bottom of thre pipe. (and if you make a screw fixing at the top, the thing could dismantlwe to make cable laying sooooo much easier......) Also would ship "flatpack"

[chewy]

East coast fibreglass do fibreglass tubes, only problem is moulding corner pieces.

[SPR]

as windsurfers masts but with some carbon fibre poles, might not crack as much! but that might be expensive....

S.