Block and Heart sizes question

[Kevin-the-lubber]

I'm starting to work my way through making all of the rigging fittings listed in McKay's AOTS HMS Victory, and I have a simple query. On his drawings on pages 114 and 115, McKay typically gives basic dimensions and, underneath the height dimension, adds, in brackets other sizes. In the example here, a closed heart, he says "(also 14", 17" & 26")". My query is this - should all the other dimensions be scaled to suit? I suspect it is very obviously 'yes, of course', but thought I'd check anyway.

 

While here, can I also sense check hole sizes. On this drawing, the implication is a rope diameter of about 1 1/2", whereas in his tables on pages 116 - 118, McKay says a 16" closed heart would be used for ropes of around 3 1/2" diameter (11 1/2" circumference). Which is true? There actually isn't anywhere near enough room for  4 x 3 1/2" rope holes, but equally, 1 1/2" ropes seem a bit on the skinny side. Or am I missing something?

[Kevin-the-lubber]

I'm going to partially answer my own question with respect to rope diameters; the 3 1/2" rope must go around the heart (slaps forehead), doesn't it. So what about the 4 through holes, does 0.4mm dia at 1:100 seem right??

[popeye2sea]

I think I read somewhere that the diameter of the lanyard for deadeyes and hearts is 1/2 (or slightly less) than the diameter of the stay or shroud.

 

Regards,

Henry

[Kevin-the-lubber]

Thanks Henry, that would more or less correspond with the drawings so I’ll stick with that. In passing, I had no idea thee were so many different fittings and sizes, and wonder does anyone stick to these when modelling. The typical plastic kit just gives four or five variants, versus the dozens in McKays tables.

[popeye2sea]

A lot of modelers go the extra effort to approximate the correct size and style of blocks. Although there are far too many, in reality, to ever model correctly.  Many modelers I see on MSW toss out the kit blocks in favor of making or purchasing more convincingly real versions.

 

Regards,

Henry

[Kevin-the-lubber]

I'm finding it worthwhile to create them in CAD anyway, as I'm learning a few things about their design that I hadn't realised were the case i.e. that the pulley wheels are not central in the block, but slightly offset, and that the blocks are recessed to allow the ropes to run cleanly from the wheel. All obvious stuff really, from an engineering perspective, but not usually represented on plastic kit parts. How well these will print I have yet to find out - some of the sizes are extremely small at 1:100, but previous runs with generic, less carefully designed blocks have been broadly fine.