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HGER2012

Block with carbon sheave

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Hi,

 

this is my home made full carbon block. sheave diameter is 45 mm. The sheave has only 7 g.

I haven't tested the breaking load yet.

It is made in a mould, pay attention for the fiber orientation.

 

 

block2.JPG

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Carbon fiber is sharp when it self destructs, so don't use any high $ sheets with that thing. BTW, did the idea come from the CF clew rings on TP 52's?

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Ropeye makes some neat looking stuff. Which I hope to try out soon!

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3 hours ago, HGER2012 said:

i 've checked the the breaking load : 630 kg.

Interesting!  But you should define what breaking load - how did carry out the test? (I guess the 630 refers to breaking the ring with eg two ropes attached, each side of the ring. If so, you have done a good job when making the ring. Another, maybe more relevant, test would be ....)

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@Thibault: how about the patent you mention?

The dynamic (i.e. “rotating) use of low friction rings (LFR’s) is existing as long as they are available as far as I know. Also Ropeye -now with worldwide distribution through Harken’s sales organization- is selling this kind of use with LFR’s as in below pictures:

u_block.jpg

ROPEYE-ROU-CBN-5__11226.1496831883.1280.

 

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Another picture, published by Colligo Marine in their catalogues from 2012 and still on their website: clearly and at least suggesting a low friction ring being used dynamically (rotating):

New2to1blcok.jpg

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I see a difference, and a big one, at least in your ropeye photos.

Getting through safety tests and development stages is costly, and being able to back up your product if one explodes and hurts someone, makes a patent valuable.

How many years is a patent nowadays ? 20 years ?

In Europe its 20 yrs, says wikipedia etc.

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On 9/26/2017 at 4:26 PM, Thibault Ino-Rope said:

Hello HGER2012,
Yep that should work really well but you are using a patented concept ;) SO i hope it is just for your personal use :)

 

Please post the patent on your website or here so that we can see what your patent covers. Or a patent number so that it can be looked up easily.

BTW going after a happy DIY guy with patent infringement claims on the SA forums is an awesome marketing strategy...

 

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Come on, you take it to seriously, do you not see the smileys :):):)

He did not claim, just informed, that is his right. He even encouraged him by telling he is on the right track.

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Hey, did miss that manufacturer, though I know him from the past, good young Nico. Smart cookie to use existing blocks and an add on.

Funny that page you link to sells Ino, Ropeye and this Morf one.

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10 minutes ago, SySunday said:

 Can you elaborate on that?

...oOoOoOoOoOo... LFR rules & DIY rules ...oOoOoOoOoOo... 

 

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