double block that comes apart?

[ChattingLil]

Is there such a thing?
I have a continuous line on my furling gear and I'd like to add a double block to the set up. I know I could cut the line and resplice it, but that is not ideal. Much preferable would be to find a block that I could take apart and place around the lines. Does such a thing exist? I can't find them but maybe they have a special name?
thanks

 

[sailorman]

how about a snatch block

 

[lw395]

Is there such a thing?
I have a continuous line on my furling gear and I'd like to add a double block to the set up. I know I could cut the line and resplice it, but that is not ideal. Much preferable would be to find a block that I could take apart and place around the lines. Does such a thing exist? I can't find them but maybe they have a special name?
thanks

What size line?
There are some where the top loop is held on by a pin which goes right through the straps on the side of the block.
There are others where the pin is riveted over and can be replaced with a long bolt after drilling the end off and pushing it out.
Have a look at Barton and Seasure.
Selden do some single blocks which can be dismantled to re-assemble on a fixed fitting, my dinghy mainsheet has them. They may do doubles.
It might be worth a phone call to a good chandler like pinbax?
I assume the loads are not huge? hand-hauled not winched?

 

[tillergirl]

Barton make these - on a Sailspar system

 

[knuterikt]

I use this one from Wichard
Ball bearing - unscrew the bolts in the center - don't loos any balls

http://marine.wichard.com/rubrique-Double-0201050302000000-ME.html

The plain bearing ones seem to have the same basic design
http://marine.wichard.com/rubrique-Sheave_35-0201060400000000-ME.html

But remember that a block where the rope is not running straight on to the sheave will create more friction on the side of the housing.
I removed all blocks except in the end from my endless roller furling system.
If the run of the line is without sharp turns of the rope there are other options
I use the double fairlead from selden http://www.seldenmast.com/en/products/code_0_and_gennaker_furling.html (page 5 in the link) for my code 0 / asymmetric furler

Or from Facnor

 

[ChattingLil]

I use this one from Wichard
Ball bearing - unscrew the bolts in the center - don't loos any balls
The plain bearing ones seem to have the same basic design

But remember that a block where the rope is not running straight on to the sheave will create more friction on the side of the housing.
I removed all blocks except in the end from my endless roller furling system.
If the run of the line is without sharp turns of the rope there are other options
I use the double fairlead from selden
Or from Facnor

thank you! excellent ideas.