Ask and you shall receive. https://youtu.be/n6B0IPKQERc
Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Sat, Jan 20, 2018, 12:47 PM John Christopher <phygi...@gmail.com> wrote: > Hi Josh, > > Were you able to video the process? If so will you upload to YouTube (I’m > one of your subs) :)? > > > > /J > > On Jan 19, 2018, at 7:51 PM, Josh Muckley <muckl...@gmail.com> wrote: > > > I had pretty decent luck torqueing the keel bolts today. A few of the > studs were damaged/corroded on the threads extending past the nut but not > on the threads protected by the nut when fully tightened. I lubed the > rough threads with extra thick tef-gel and things seemed to go together > smooth enough. The 3:1 multiplier was effective but I think a 4:1 or 5:1 > would have made the job a little easier. I was definitely glad I brought a > 3 foot pipe to help stabilize the reaction bar. It was extremely helpful > to have a second person present to monitor and stabilize the whole > apparatus. I stand by my statement from last night that keeping the > operating wrench as close to the multiplier as possible minimizes the > creation of odd twisting motions. My concerns of using an output drive > extension were unfounded and I would encourage anyone who is hesitating, to > use one. > > We were out of the water and set on a block around 9:30am and done with > the torque by 12:30. This included removing each nut, cleaning the nut and > stud, and then reinstalling each one at a time. Overall a very smooth > process but the preparation was a very important part. > > I used the torque values from the link below as a guide. 316 SS > lubricated. > > > https://www.fastenal.com/content/feds/pdf/Torque%20of%20Stainless%20Steel,%20Non%20ferrous%20Torque.pdf > > Keel bolts (fwd to aft): > Nut stud torque 3:1 > multiplier > 1 - 1 1/2 (38mm) 1 (25mm) 255 = 85 x 3 > 2 - 2 3/16 (56mm) 1 1/2 (38mm) 615 = 205 x 3 > 3 - 2 3/16 (56mm) 1 1/2 (38mm) 615 = 205 x 3 > 4 - 2 3/16 (56mm) 1 1/2 (38mm) 615 = 205 x 3 > 5 - 1 7/8 (47.5mm)1 1/4 (32mm) 465 = 155 x 3 > 6 - 2 3/16 (56mm) 1 1/2 (38mm) 615 = 205 x 3 > 7 - 1 1/2 (38mm) 1 (25mm) 255 = 85 x 3 > 8 - 3/4 (19.5mm) 1/2 (13mm) 38 > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > > > On Jan 2, 2018 3:18 PM, "Josh Muckley via CnC-List" <cnc-list@cnc-list.com> > wrote: > > Ok Guys, > Since I have the mast out, this provides the rare opportunity to access > ALL of the keel bolts. I've measured each of the bolt and nut diameters > and checked the archives for torque specs. I intend to buy a toque > multiplier and the appropriate sized sockets. I think I can do it for less > than the yard is going to charge and I'll come out of it with some tools. > I'll also be able to tell myself that it was done correctly. > > That being said it sounds like the best practices are are follows: > - be on the hard > - loosen the bolts one at a time, clean, and lubricate with tef-gel > - reinstall and torque at progressively higher levels. > > I was unable to find the torque spec for my 1.5" bolt in the website but > Ken Heaton cited 600lbs in one of his past responses. > > Keel bolts (fwd to aft): > Nut stud torque > 1 - 1 1/2 (38mm) 1 (25mm) 350 > 2 - 2 3/16 (56mm) 1 1/2 (38mm) 600? > 3 - 2 3/16 (56mm) 1 1/2 (38mm) 600? > 4 - 2 3/16 (56mm) 1 1/2 (38mm) 600? > 5 - 1 7/8 (47.5mm)1 1/4 (32mm) 450 > 6 - 2 3/16 (56mm) 1 1/2 (38mm) 600? > 7 - 1 1/2 (38mm) 1 (25mm) 350 > 8 - 3/4 (19.5mm) 1/2 (13mm) 80 > > > *Anything I'm missing?* > > > Thanks, > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > > >
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
