Running rigging specs are largely a matter of personal preference and the layout of your particular boat, so I wouldn't worry about finding a one-size-fits-all list of materials. The masthead sheaves on older M17s were sized for wire/rope halyards. These days, I think most people do what I do, which is use an all-rope halyard made of low-stretch line, typically 1/4". Ideally, you would change the sheaves, but I didn't and they work reasonably well with the 1/4" line. I have been using Stay-Set X, but there are newer alternatives, some of which might let you go down to 3/16", which, among other advantages, would fit the sheaves even better. I'm sure others will weigh in with suggestions along those lines. For the mainsheet, I think most people use their preferred brand of 3/8" line. I use 3/8" for the jib/genoa sheets too, but the more race oriented types prefer a lighter line for that application. If your boat still uses the o.e. clam cleats for the reefing lines, the lines need to be sized to match; can't remember right now if that is 1/8" or 3/16". I do not have a boom vang or a line control traveler, but if I did I probably would use 1/4" line there. -----Original Message----- From: montgomery_boats <montgomery_boats-bounces@mailman.xmission.com> On Behalf Of Gerry Lempicki via montgomery_boats Sent: Tuesday, March 19, 2019 8:57 AM To: montgomery_boats@mailman.xmission.com Subject: M_Boats: M-17 Rigging Instructions? Hi everyone, I bought a 1974 M17 over the winter. It needs some work to be ready to go. I’m figuring some things out, but I am confused about how the running rigging was originally run and set up. And actually what size/material was used too. The sheaves in the masthead have fairly small grooves. It doesn’t appear that I got any halyards or lines with the boat. I see the rigging instructions for the M-15; is there anything similar out there for the M-17? I’ve had no luck searching. Or a list of materials needed to replace all running rigging? Thanks for any input on this. Gerry