'92 37.5 rig tuning

Status
Not open for further replies.
D

Dan Arsenault

Hi, We have had our boat for a few years and I still cannot tune our rig so that the intermediate and lower shrouds don't loosen up a bunch on a beat. If I tension them more the mast trys to inverte. Any one got any ideas or help?
 
R

Ron Hughes

37.5 rig tuning nailed!

Dan, the master rigger Brion Toss from Port Townsend Wash. has a video available called "Tuning your rig". In it he shows video of, and walks you thru a tuning of the 37.5! Order it on the web at: briontoss.com or phone:1-800-232-8902. Brion is great! The video is truly an excellent teaching tool. Brion came to Portland, Oregon and tuned our 40.5 himself. It now points 5-10 degrees higher, while allowing us to reef much later, as the boat now stands up much straighter in a stiff breeze! One tip: When sailing in YOUR most average wind to weather, tighten the shrouds on the leeward side just to where you can't turn the turnbuckle any more by hand. Tack. Do the same on the other side. There should be no slack at all in the leeward shrouds when sailing to weather. BUT, there should be no extra tension added to them either, meaning that you truly just draw up the shrouds to where there is no slack. Brion has many books and videos. You can't go wrong if you follow his advice. It is truly great to find a true expert in our world of posers, isn't it? Ron Hughes s/v Best Revenge.
 
J

Jim Ewing

Procedure in manual

Hi Dan, Did you follow the procedure in the manual? It's a bit vague as to specifics (like tension) but worked well for us. We got our 37.5 (a 93) last April and the rigging was sloppy as you described. I think the key is getting the lateral column nailed and the "prebend" set. The intermediates and lowers then just support the middle section of the mast. Also when you say the mast tries to invert what do you mean? Ours ends up with about 4-5" of bend (as opposed to the 1" the manual says. Also when sailing do you loosen the topping lift? If not that can induce some additional stress that might change your mast band at the top and let your shrouds wobble about. Jim "Prospect"
 
Status
Not open for further replies.