Is there such a thing as a captive turning block?

[Otter]

Is there such a thing as a captive turning block? I want a sheet to travel up from the deck and over the aft cabin roof. For that a simple turning block mounted on the aft deck will take the sheet from vertical to horizontal. But the sheet will fall off the top of the block when it's not loaded up and I'll have to keep going round and putting it back on. I've googled it to bits but keep getting results for people captured by pirates for some reason. Does this device exist?

Thanks.

 

[micha571]

Harken over-the-top blocks:
http://www.harken.com/productcategory.aspx?taxid=1532

 

[Otter]

Harken over-the-top blocks:
http://www.harken.com/productcategory.aspx?taxid=1532

That's great thanks. Just got to find if someone makes them for less than £150! At least I know the search term now, thanks

 

[sailorman]

04-170 + a s/s strip for the ext change of angle

 

[xeitosaphil]

That's great thanks. Just got to find if someone makes them for less than £150! At least I know the search term now, thanks

Here's one for a start:


http://www.pinbax.com/index.asp?selection=detailed&uid=42130&cg=7&mc=65&cct=4&sc=1153 just £20

Philip


Pip ed at the post by sailorman by just 19 seconds - must learn to type faster!!

 

[AngusMcDoon]

Here's one for a start:


http://www.pinbax.com/index.asp?selection=detailed&uid=42130&cg=7&mc=65&cct=4&sc=1153 just £20

Philip

It looks like the becket might flop around on that one, in which case the line may come off the pulley, or is the becket at a fixed angle?

 

[xeitosaphil]

It looks like the becket might flop around on that one, in which case the line may come off the pulley, or is the becket at a fixed angle?

Not sure about that as it might be a friction adjustable or fixed shroud? might be possible to fix it in correct position with maybe a Loctite product though, as it is only to keep the sheet on the block when not loaded?

As long as it didn't let the sheet fall of the block it may not be a problem anyway?

Op would need to explore suitability for location etc , just though it may be a cheaper option than the one he found.

Philip

 

[AngusMcDoon]

As long as it didn't let the sheet fall of the block it may not be a problem anyway?

You're right, it may not be a problem. Certainly a lot cheaper. Barton stuff always seems to be the price you'd expect to pay for a bit of bent stainless and a pulley.

 

[prv]

04-170 + a s/s strip for the ext change of angle

170?!?

No way, that's a spring standup block, you can't run a line over the top of it and expect it to stay there.

150 or 151, possibly with an additional strip over the top, look like the right thing though.

Pete

 

[sailorman]

I was referring to the lower block

 

[wilkinsonsails]

What you need is a foot block ,maybe mounted on a canted pad.It will take the angle up from the genoa car and then if tipped, it can aim at the winch drum too.Bartons do them in their synchro range.
Will be in touch via pm re the light genny .
Cindy

 

[Len Ingalls]

View attachment 48047

Current issue of GoodOldBoat magazine has article showing homemade "over the top" blocks.For leading halyards,etc back & over top of pilothouse.
I scanned 4 pgs & tried to attach 1pg to this.If it doesn't work & if you want copies,PM me. Cheers/ Len

 

[Otter]

Thanks for that Len. It's for a Genoa sheet so the loads are pretty high - maybe too much for home made.

 

[Len Ingalls]

View attachment 48048View attachment 48049View attachment 48050

Guess it worked.Here are other 3 pgs. Hope it's helpful. / Len

 

[Poecheng]

Would a high quality, low friction bullseye do it?

 

[Poignard]

Is there such a thing as a captive turning block? I want a sheet to travel up from the deck and over the aft cabin roof. For that a simple turning block mounted on the aft deck will take the sheet from vertical to horizontal. But the sheet will fall off the top of the block when it's not loaded up and I'll have to keep going round and putting it back on. I've googled it to bits but keep getting results for people captured by pirates for some reason. Does this device exist?

Thanks.

There's an article in Good Old Boat magazine that might help:

http://goodoldboat.com/promo_pdfs/Jan15_Promo.pdf

 

[Thistle]

I'm curious: why do you want to lead a genoa sheet like that? The loads on a genoa sheet can be very high and I'd be concerned that this might be applied to a bit of the boat not designed for such loads.

 

[cliff]

I'm curious: why do you want to lead a genoa sheet like that? The loads on a genoa sheet can be very high and I'd be concerned that this might be applied to a bit of the boat not designed for such loads.

Maybe someone's a little confused over sheets and halyards/uplifts/downhauls

 

[Otter]

I'm curious: why do you want to lead a genoa sheet like that? The loads on a genoa sheet can be very high and I'd be concerned that this might be applied to a bit of the boat not designed for such loads.

The design of a Colvic Watson 34 aft cabin model puts the Genoa/spinnaker winches on the side of the wheelhouse. It's a poor design, it's tricky to winch, you bash into them and you're limited on winch size. You can easily mount them on the aft cabin roof, but I'm experimenting bringing the starboard sheet over the cabin roof to a single winch so that both sheets and main sheet are all controlled from one point. We enjoy sailing the Kipper, she's very rewarding in a F4 and above but the present arrangement suits someone who motorsails rather than sails.

 

[Len Ingalls]

Nice video! That's what it's all about!