>From what I know, the RivNuts are better for shear load (rather than for pull).
Also, be careful how long the bolts you use. You don't want the bolts sticking inside the boom (if you have any lines going there). Just a few cents Marek 1994 #122 "Legato" Ottawa, ON -----Original Message----- From: Jeff Nelson via CnC-List Sent: Monday, October 31, 2022 10:43 AM To: cnc-list@cnc-list.com Cc: Jeff Nelson <jhnelso...@gmail.com> Subject: Stus-List Re: Vang repair For Option 3: Could use a RivNut, which may increase the load bearing on the thin walled boom. https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.boellhoff.com%2Fca-en%2Fproducts-and-services%2Fspecial-fasteners%2Fblind-rivet-nuts-rivnut.php&data=05%7C01%7C%7C88ca27064e7f4b40805108dabb4e4202%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638028242028510337%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=oZb5RJBhWFQnbLkE%2BaeaAmf4MMFL%2FjPxZErtZ3ChsL0%3D&reserved=0 These are commonly available at hardware stores. You don't need the special tool, you can install them with 2 wrenches. I'm not sure what the load capabilities are on these. I used them to install my Vang, but my bolts go in horizontally through the boom, so most of the load is on the boom material not pulling out the threading....and of course, I'm a lot smaller boat. Cheers, Jeff Nelson Muir Caileag C&C 30 - 549 Armdale Y.C. On 2022-10-31 10:48, Barry McKee via CnC-List wrote: > Option 1 seems to be the best solution. Boom material may not be thick > enough to support the helicoil solution. > > Good luck!! > > Barry McKee > C&C 29 Mk I > > > > My options are: 1) move the vang fitting and drill/tap new holes; 2) > drill/tap the existing holes with larger bolts (which may be too large to fit > in the vang fitting); or 3) install helicoil inserts in the existing holes > (which I've never used before). Thoughts? > > Matt > C&C 42 Custom
