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WillemSix

Light weight traveller block - is this new?

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Sailing a laser, had this idea for a traveller block using a low friction ring. Attached image was hashed up quickly around an Antal 14x10 ring, 3d printable, all up weight 20grs.

 Has this been done before?

If not, would you want one if it were class legal?

You’d have to print one or have made to order for a few $.

 

 

 

 

 

3028EFA3-4679-4A24-8BD1-0AC06267C952.jpeg

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So the traveller line is like an axel through the ring? 

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8 hours ago, SCARECROW said:

Basically a karver

Karvers have a ball bearing, axle for this is a single braid dyneema line through the ring.

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After some thought, version 2.

black: Antal 14x10 low friction ring

green: traveller line

yellow: sheet

gray: outer shell of the block

blue: inner core of the block, rides on top of the traveller line, snaps into the shell, and keeps the outer shell concentric to the ring

open source, attribution only

 

 

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62EF1F45-08AF-4EF3-AED9-83F893F599B0.jpeg

35BA7B45-DDAB-415A-A7CC-F077C3C0F6C3.jpeg

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Suggest you submit a request for a class rule change to allow this block. 

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Definitely cool, but it addresses a problem that doesn’t really exist. 

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44 minutes ago, bill4 said:

Definitely cool, but it addresses a problem that doesn’t really exist. 

Cooler and lighter is always better. Let the members vote.

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Its very neat, but if class rules are followed its illegal, and if they aren't then a fundamentally different sheeting setup is probably better, so it may be a bit of a solution looking for a problem.

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1 hour ago, JimC said:

Its very neat, but if class rules are followed its illegal, and if they aren't then a fundamentally different sheeting setup is probably better, so it may be a bit of a solution looking for a problem.

Fundamental change is not consistent with the Laser strict one design ethos. Baby steps only please.

What next? Carbon rigs with see-thru sails?

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3 hours ago, tillerman said:

Fundamental change is not consistent with the Laser strict one design ethos. Baby steps only please.

What next? Carbon rigs with see-thru sails?

Yes!

Skip the trick traveler block. Introduce the carbon rig and Square top fully battened sail. Paint the blades orange as we make the transition to this century. 

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12 hours ago, CaptainAhab said:

 

Yes!

Skip the trick traveler block. Introduce the carbon rig and Square top fully battened sail. Paint the blades orange as we make the transition to this century. 

You've still got a shite hull.  Doesn't seem worth the effort.

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2 hours ago, European Bloke said:

You've still got a shite hull.  Doesn't seem worth the effort.

Well, if you're going to introduce 5 totally new rigs you might as well have a new hull too.

Something half the weight with an open transom perhaps?

1308666491_ScreenShot2019-09-23at10_41_59AM.thumb.png.b72b84718adbba44557d2e688ba4a794.png

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1 hour ago, tillerman said:

Well, if you're going to introduce 5 totally new rigs you might as well have a new hull too.

Something half the weight with an open transom perhaps?

1308666491_ScreenShot2019-09-23at10_41_59AM.thumb.png.b72b84718adbba44557d2e688ba4a794.png

I've seen this pic before, but couldn't get past the skipper to realize the boat similarities to our current Laser.

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2 hours ago, tillerman said:

Something half the weight with an open transom perhaps?

Think big, add foils.Lol

buuuut to get back on track: have we seen this before?

 

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53 minutes ago, WillemSix said:

Think big, add foils.Lol

buuuut to get back on track: have we seen this before?

 

The picture of the APS buoy is quite popular. It's all over the Internet.

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Pretty sure there are carbon fibre blocks somewhere, if big fat carbon tiller/tiller extensions are the norm... I've seen people at the club who have fucked around with bigger traveller blocks though.

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On 9/22/2019 at 7:29 PM, bill4 said:

Definitely cool, but it addresses a problem that doesn’t really exist. 

Block-to-block is nearly 2" lower than using class-legal hardware.

So you could run less sheet, or less traveller (even without a wafer-thin tiller), or break more masts with even more luff tension.

I'll eagerly await the rule change.

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21 hours ago, OneGoat said:

Block-to-block is nearly 2" lower than using class-legal hardware.

So you could run less sheet, or less traveller (even without a wafer-thin tiller), or break more masts with even more luff tension.

I'll eagerly await the rule change.

Changing rules may take a while... and wouldn’t help in keeping a level playfield. 

Whilst the idea came when looking at a laser traveller, it may have wider applications. Flip the block upside down and tie it to the boom and you have a low profile mainsheet block. Ideal for skiffs and foilers.

Thank you for all the replies!

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On 9/23/2019 at 3:29 AM, bill4 said:

Definitely cool, but it addresses a problem that doesn’t really exist. 

Indeed. I can't see what the plastic bits do to improve on a plain ring. There are similar blocks that are more versatile, and why is it only suitable for Lasers (sorry, ILCA dinghies):

2149_d94deedf-e789-4c4e-b54b-d8c6ce94744

The high-strength composite T2™ is the first block with no metal shackles or rivets. It is used for traveler controls, mainsheets and vangs, cascades, bridles, and other systems where small, lightweight blocks are called for.

The T2 can be tied, spliced, or lashed to almost anything. A length of Spectra® line is included.

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On 9/26/2019 at 5:00 AM, RobG said:

I can't see what the plastic bits do to improve on a plain ring

Fair question. A couple of good reasons actually

- high safe weight loads, no more grinding ball bearings

- more money for beer after sailing, T2’s are eye watering expensive after all

 

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While I like the idea, there are a couple of small negatives:

  • More leach tension
  • More expense

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Great thinking!   I'd imagine it would be quite a challenge to get it class approved, but it does indeed appear to be a better technical solution.  Lower profile, lighter, fewer moving parts.   Thanks for sharing!

 

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Looks light, neat and simple. If I'm seeing it right the friction/load point is between the sheave and the traveler line. Is it important in a gust on a laser to let out main quickly to avoid swimming? If so, its hard to beat ball bearings and a large sheave.

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