Hi all.

My No. 1 keeps getting caught on my starboard stanchions. They are a little higher than the port side ones. I have the wheels on the wires, but they don'e help as they are too small. Previous owner had the stanchions removed. However i want them on for safety.
I was thinking of making something like this -

Rounded outside to allow for the sail to roll over it.
Flatter on the inside so it doesn't alter the shape of the sail too much.
Small weight to keep it in the correct orientation.

Do you think it would work??

HI Valo,
When you say it's getting caught, do you mean this sorta thing?

Nope this.

When I winch it in, it catches on 2 Stanchions every time.

I like your concept! I have the same problem.
Windage and weight maybe an issue?
Is it free to run, or fixed in place somehow?

Sorry to go off thread, but how do you guys do the cool sketch's
cheers Richard

Valo,
When you get to final design, let me know if you want 'em 3d printed. I bought one of those Aldi cheapy ones an I need a project or two!

I could make it from 10-15mm HDPE and drill holes to lighten it and round the edges. Just need to fix a lead sinker into it at a point where it will hang right. Then work out a way to fit it without it coming off. I am thinking a cut at an angle as shown. I am thinking run free. However I can see that it would twist it it wasn't against the stanchion. I thought of fixing it to the stanchion so that it doesn't move. However i think it would still get caught. It needs to roll.

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shaggybaxter said..
Valo,
When you get to final design, let me know if you want 'em 3d printed. I bought one of those Aldi cheapy ones an I need a project or two!

Excellent. Will do. Thanks.

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Stockie said..
Sorry to go off thread, but how do you guys do the cool sketch's
cheers Richard

Hi Richard. I am a Landscape Designer. So I use a CAD program. There are plenty of free ones to download that are good for this type of stuff also.

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Stockie said..
Sorry to go off thread, but how do you guys do the cool sketch's
cheers Richard

HI Stockie,
There should be no such thing as going off thread I reckon, tangents are interesting!
Nothing too techo on my side I'm afraid. I do rough ones in powerpoint, then use that as a background image to lay out any 3d stuff.
3d is DesignSpark, cool for drawing in 3d to print to 3d printers,
If I need to do detailed measurement stuff I use Autocad lite, mainly because I'm too cheap to buy the real Autocad.
I like tech drawing, but nothing to do with my work, just a homething.
Cheers,
SB

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valo said..
I could make it from 10-15mm HDPE and drill holes to lighten it and round the edges. Just need to fix a lead sinker into it at a point where it will hang right. Then work out a way to fit it without it coming off. I am thinking a cut at an angle as shown. I am thinking run free. However I can see that it would twist it it wasn't against the stanchion. I thought of fixing it to the stanchion so that it doesn't move. However i think it would still get caught. It needs to roll.

You could make 2 x external bump stops that would fasten to the lifeline ( via: grub screw or rubber or cable tie or something) and then make the free running Valo component radiused to suit bump stops. Leave a 2mm clearance and it should spin without skewing or jamming?

The bit in the middle in the lower pics represents your component Valo, so please excuse the woefully out of kilter scale and crap representation, I'm just thinking of the mounting, how to leave it free runnning but pinned in place on the lifeline. Not intended to show any of the detail of your mockup.
This would make a larger surface area to stop a sideways skew/jam happening.

I thought of something like that. However i would have to cut my lifeline to slide them on. I was hoping to cut a slit in it and slide it over the lifeline. Like in my pic above.
If it was 3D printed, and i know nothing about this, can you print it so the stoppers were an extension of the hole? So one piece.

Here you go-

. However i would have to cut my lifeline
Sorry, I didn't explain. You can make each stopper as a two piece, so they interlock or screw together over your lifeline without disturbing your lifeline.

can you print it so the stoppers were an extension of the hole
Yep.
Can do.

Nice render btw!

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Stockie said..
Sorry to go off thread, but how do you guys do the cool sketch's
cheers Richard

another (free) option is SketchUp Free:

www.sketchup.com/plans-and-pricing/sketchup-free

I will do up a design with same amount of plastic either side of the wire hole. So should sit straight. Maybe
What file format do you need it in for printing?

OK, try the following:

ECAD Files ( *.idf,*.idb, *.emni)
OBJ Files (*.obj)
Sketchup files (*.skp)
STEP files (*.stp, *.step, ) (Read Only)
STL files (*.stl)

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shaggybaxter said..
OK, try the following:

ECAD Files ( *.idf,*.idb, *.emni)
OBJ Files (*.obj)
Sketchup files (*.skp)
STEP files (*.stp, *.step, ) (Read Only)
STL files (*.stl)

Ok. I have OBJ, STL & Step file options. I will draw it up and message you the Dropbox link to the files. Will try to get it done tomorrow.

This should be interesting!

Thanks for this.

No worries .
FYR, I just checked the maximum size I can print.
The virtual box is:
Width: 120mm
Depth: 135mm.
Height: 100mm

As I think you had a 200mm?? length, we may have to use a plane , or create an edge and cut it into two.
Then we'll look at what option's on how to connectorise, snap, tie screw glue etc.

Being an engineer I'm a big fan of the 3d print option but on the race boat, a well timed tap or two on the top lifeline, just adjacent to the winch, will usually flick it off the stanchion ;)

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Jethrow said..
Being an engineer I'm a big fan of the 3d print option but on the race boat, a well timed tap or two on the top lifeline, just adjacent to the winch, will usually flick it off the stanchion ;)

Hi Jethrow,
Me too! But Vola suckered me nicely, I'm enjoying the innovation and engineering aspect of it.

Just wait till we get to the color choices!

Heh.....I'm just reading on how you can monogram your xxx name on it.
Bling!

If we join it in two halves on a plane, you could design in a cut out to house the sinker.
When you close it, you enclose the sinker.
Open to replace/resize.
Edit: First pass may have to rely on sticking weights on it in different places till we work out where to scallop it.

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Jethrow said..
Being an engineer I'm a big fan of the 3d print option but on the race boat, a well timed tap or two on the top lifeline, just adjacent to the winch, will usually flick it off the stanchion ;)

Yeah. It works on the post side. But not on the Starboard side. I spent too much time yesterday running up and skirting. I had to pull it over. No amount of banging, easing off on the sheet or swearing was working!
So I either reduce the height of the stanchions, or I have some fun doing this.

Here you go.
Nice blue colour, and both about the same volume. I reckon a couple of cable ties should hold them together to see if they work.

Hi Valo

What size boat are you talking? Racing or cruising light handed?

Could be just a matter of trimming, there is a moment the heady will drop over the stanchions, quick trim right then?

Not a new problem, but I like your ideas.

Just asking, but are your sheets run outside your standing rigging?

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valo said..
Here you go.
Nice blue colour, and both about the same volume. I reckon a couple of cable ties should hold them together to see if they work.

Roger that.
They be up on Dropbox?

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shoodbegood said..
Hi Valo

What size boat are you talking? Racing or cruising light handed?

Could be just a matter of trimming, there is a moment the heady will drop over the stanchions, quick trim right then?

Not a new problem, but I like your ideas.

Hi Sbg
Endeavour 26.
Tried everything I can think of.
The stanchions are just too high above the top wire.
I suppose I could just drill higher holes!

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nswsailor said..
Just asking, but are your sheets run outside your standing rigging?

Outside for no. 1 and 2 inside for no.3