H27 main sheet length?

[Jimboyyy]

Do any of you other H 27 Cherubini owners happens to know the length of your main sheet? (I do not have a traveler just the standard block set up)Also from what I can tell my H27 appears to have all 8mm sheets (main and jib) as well as 8mm halyards does anyone know if this was standard at the time? What diameter is recommended?

 

[tomgrigsby]

Don't know about the main, but I bought my jib sheets off this web site and they are fine specimens. The order page has a calculator that tells you what length sheets you need. Line technology has come a long way since our Cherubinis were built. I bought 3/8" line and am delighted with it. It fits the winches & cleats nicely, is light and far stronger than anything available 30 years ago

 

[TDudley]

I also think the calculator is a cool tool. I have a 27 with a tall rig. The main sheet was about 60 feet. I thought it was a little over kill figuring that the existing one was about 33 feet. But then I thought about being able to push the boom all the way out to nearly perpendicular to the boat to maybe bring someone back into the boat after going overboard. 60 feet would make that possible.

Use the calculator and buy it from the site. That is my plan.

 

[DianaOfBurlington]

Mainsheet lengths

Jimboyy, you do not say if you have mid-boom or end-boom sheeting. Try this formula. Take the length of the boom from the gooseneck to the sheet point, multiply by 1.4, multiply by the amount of tackle purchase, and add in any other length from the sheet point to the actual cleat. And leave enough to knot or drop on the cockpit floor! So on Diana, an H25, the attachment point is about 8 ft aft, I have 4:1 purchase (two fiddle blocks), so I made the sheet about 46 ft.

This isn't exactly perfect, so err long by a foot or two. (Though my dad did, I don't know trig well.) But assuming the boom is athwartships when downwind, the sheetline would be the hypotenuse of a right triangle; so that's where 1.4 comes in.

BTW all my running rigging is Yale UULS and I love it. It's soft, as low-stretch as Sampson XLS (less stretch than Sta-Set X), and I got it very cheap at a West Marine closeout! The sheets and halyards are all 3/8", about the smallest rope anyone would ever want to hold in a fist. Regardless of load requirements nothing smaller makes sense. (I.e., my Robin dinghy mainsheet is 5/16" though 1/8" would probably hold it. Who wants to hold 1/8"?)