I only had to get about 200 ft-lbs on my 3:1 torque multiplier for a total of 600 ft-lbs. It was a pretty good struggle to get there.
Josh On Thu, Feb 21, 2019, 8:55 PM Josh Muckley <muckl...@gmail.com wrote: > Charlie, > > You're very welcome. I got my torque wrench from home depot about 15 > years ago. It's the one you see in the video. > > > https://m.lowes.com/pd/Kobalt-1-2-in-Drive-Click-Torque-Wrench-50-ft-lb-to-250-ft-lb/1000259431 > > > https://www.homedepot.com/p/Husky-50-250-ft-lbs-1-2-in-Drive-Torque-Wrench-H2DTWA/205914009 > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > > > > > > On Thu, Feb 21, 2019, 5:47 PM Charlie Nelson via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Thanks for chiming in Josh. I like not buying a multiplier! >> >> Will have a look for a 250 ft-lb wrench etc. and review your video. >> >> Good catch on the the stud size—my msmt was with a ruler across the stud >> but was likely across the inside of the thread groove—plus 7/8” seems a >> little strange for such a large stud. The flats on the nut were much easier >> to measure. >> >> I like your ft-lb numbers since they are consistent with what I found for >> SS and reachable without a multiplier. >> >> Thanks again, >> >> Charlie >> >> Sent from AOL Mobile Mail >> Get the new AOL app: mail.mobile.aol.com >> >> On Thursday, February 21, 2019, Josh Muckley via CnC-List < >> cnc-list@cnc-list.com> wrote: >> >> Look in the description section of the video for useful links. >> >> https://youtu.be/n6B0IPKQERc >> >> If the flats of the nut are at 1-1/2 inch then the studs are 1 inch and >> you're looking at roughly 230 to 250 ft-lbs lubricated torque value. A >> large torque wrench from Home Depot or Lowes should max out at 250. It >> will almost certainly be 1/2 inch drive. Operating any torque wrench at >> its high limit is always difficult... But doable. I would probably try to >> save myself the money on a torque multiplier and just get the biggest >> torque wrench and 1/2" drive extensions and a 1/2 inch drive, deep, 6 >> point, 1-1/2" socket. >> >> Josh Muckley >> S/V Sea Hawk >> 1989 C&C 37+ >> Solomons, MD >> >> >> >> >> On Thu, Feb 21, 2019, 1:41 PM Charlie Nelson via CnC-List < >> cnc-list@cnc-list.com wrote: >> >> >> It appears per list comments that it is OK to tighten my keel/centerboard >> 'trunk' without putting her on the hard. Since I can reach most of the nuts >> by removing the cabin sole, I figure its worth a try. I cannot reach the >> bolts under the mast this way but I can probably get to most of the others. >> My keel/cb trunk is pretty wide so there are 2 rows of bolts/nuts holding >> it to the hull. >> >> My guess is that I have 8-12 pairs of bolts and those that I can see are >> 7/8" diameter with nuts that are 1 1/2" across and appear to be stainless >> steel. BTW, my keel/cb trunk and board weigh-in at about 5600 lbs per the >> original specs. >> >> A quick internet search on torque wrenches, multipliers and torque values >> with my bilge depth in mind indicates that I will need a 1 1/2" socket with >> an extension of ~ 12 inches and maybe a torque multiplier, depending on the >> torque required. >> >> List sources suggest torques of over 200 ft-lbs are required and most >> common torque wrenches top out at 150 ft-lbs thus the multiplier. My quick >> look at recommended torques vs. SS (18-8) bolt sizes indicates 193-195 >> ft-lbs is recommended for my bolts which is consistent with values I have >> seen on the list and the C&C photo album, although a little on the low end. >> >> OTOH, I might be able to use a bigger/longer torque wrench without the >> multiplier. >> >> Either way, I am not certain of what drive size to either rent/borrow or >> buy--and the cost is substantial if you go from the 'standard' 1/2" drive >> to 3/4" or higher. >> >> Questions for the list: >> >> 1. Are my torque values ~ 200 ft-lbs within the ballpark? I seem to >> remember some list recommendations at ~ 350 ft-lbs! >> >> 2. Also, what is a reasonable drive size to use? >> >> 3. Should I just go with a larger torque wrench (which will reach the >> ft-lbs required without the multiplier)? >> >> 4. Any likely issues with not tightening the bolts under the mast until >> my haul-out this summer? >> >> TIA >> >> Charlie Nelson >> Water Phantom >> 1995 C&C 36 XL/kcb >> >> >> >> >> >> >> >> >> _______________________________________________ >> >> 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 >> >> _______________________________________________ >> >> 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 >> >>
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