Stus-List Keel bolt torque with antisieze

I am finally about to rebed the keel on Freya (35MK3). The Torque table indicates a value of 300 ft lbs for a 1" bolt. I have read a variation of adjustments to that value if using antisieze "lubricant". I have Tufgel, so I plan on using that. The values I have read regarding the torque for wet bol

Re: Stus-List Keel bolt torque

I'll just surprise her with that one! On Mon, Jan 22, 2018, 3:32 PM Joel Aronson via CnC-List < cnc-list@cnc-list.com> wrote: > Just don't tell her about greasing the winch! > > > > V

Re: Stus-List Keel bolt torque

Just don't tell her about greasing the winch! Virus-free. www.avg.com <#

Re: Stus-List Keel bolt torque

I've been getting some good feedback on the torqing video I posted on YouTube, so I told my wife. She stopped dead in her tracks and I had to quickly clarify torque-ing not twerking! Haha 😂 On Jan 2, 2018 3:18 PM, "Josh Muckley via CnC-List" wrote: > Ok Guys, > Since I have the mast out, this

Re: Stus-List Keel bolt torque

Nice! Thanks... /J > On Jan 20, 2018, at 8:46 PM, Josh Muckley wrote: > > 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 wrote: >> Hi Josh, >> >> Were you

Re: Stus-List Keel bolt torque

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 wrote: > Hi Josh, > > Were you able to video the process? If so will you upload to YouTube (I’m > one of your subs) :)? > > > > /J > > O

Re: Stus-List Keel bolt torque

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 wrote: > > > I had pretty decent luck torqueing the keel bolts today. A few of the studs > were damaged/corroded on the threads extending

Re: Stus-List Keel bolt torque

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 enou

Re: Stus-List Keel bolt torque

As best I can remember, that was my experience the first time I retourqued mine. But that was a number of years ago. At that point it had likely been many years since anyone had checked the torque on the keel bolts. They seem to hold their torque better as I check them every few years. I should

Re: Stus-List Keel bolt torque

Ok so tomorrow is the short haul for keel bolt torque. Tonight I collected all of my tools at the boat and did a dry run by taking a few turns off of each nut and then retorquing to about 75%. I wanted to make sure that any issues with tools and access were ironed out early. Everything worked fin

Re: Stus-List Keel bolt torque

Josh, Depends on the material used (i.e., Snap-on vs. Harbor Freight). Assuming the extension is made from a quality alloy steel such as 4130, the shear stress at 350 ft-lb would be about 32 ksi (help stamp out metric in my lifetime).  This assumes the extension diameter is 7/8 so that they c

Re: Stus-List Keel bolt torque

"Anybody wanna venture what the typical torque limits are on a 3/4 drive extension?" I don't know that for sure but the micrometer adjustable torque wrench I borrow from the Heavy Equipment Mechanics is 3/4" drive and it goes a lot higher than 600lbs. torque. Ken H. On Monday, 15 January 2018, J

Re: Stus-List Keel bolt torque

I thought about that too Bill, but a 3/4 output drive is going to be limited to the given socket and quality there of. That's why I assume the input is always smaller than the output (1/2 to 3/4) or (3/4 to 1). Anybody wanna venture what the typical torque limits are on a 3/4 drive extension? It

Re: Stus-List Keel bolt torque

Could it be that manufacturer of multiplier fears that the extension will not be of sufficient quality/strength to transfer the torque developed by multiplier? Bill Walker Sent from AOL Mobile Mail___ Thanks everyone for supporting this list with

Re: Stus-List Keel bolt torque

Josh, I agree with your assessment of why they recommend against extensions.  I used to use a 4:1 multiplier to torque fuse bolts on bomb bodies (650 foot-lb).  It is a true challenge to support the multiplier without an extension.  With an extension, I strongly agree with using a support.  T

Re: Stus-List Keel bolt torque

less Leamington, Ontario *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Josh Muckley via CnC-List *Sent:* January-15-18 09:51 *To:* C&C List *Cc:* Josh Muckley *Subject:* Re: Stus-List Keel bolt torque Dennis, I'm totally in agreement with your thinking and

Re: Stus-List Keel bolt torque

an extension on the output. Rick Taillieu Boatless Leamington, Ontario From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Josh Muckley via CnC-List Sent: January-15-18 09:51 To: C&C List Cc: Josh Muckley Subject: Re: Stus-List Keel bolt torque Dennis, I'

Re: Stus-List Keel bolt torque

Josh, A quick Google search for "using extension with torque multiplier" shows the most common use of "extension" as an extension of the handle of a torque wrench, not an extension between the multiplier and socket. Most of the hits were how to calculate the added torque from extending the handle

Re: Stus-List Keel bolt torque

Yeah Johh, my thinking is that that is the biggest concern anytime an extension or adapter is being used. The further off axis the head of the wrench the more inaccurate the torque being applied. A more purposeful statement to that effect in the multiplier instructions would have been nice. With

Re: Stus-List Keel bolt torque

On the 27- mik III I just make sure the extension stays vertical. Not dealing with that much torque. Sent from my iPhone On Jan 15, 2018, at 10:44 AM, Dennis C. via CnC-List mailto:cnc-list@cnc-list.com>> wrote: Hopefully, I'm visualizing the situation correctly. The configuration I see is t

Re: Stus-List Keel bolt torque

Dennis, I'm totally in agreement with your thinking and think you are envisioning it correctly but I just wanted to check with the collective wisdom. I wish the multiplier had expounded on their "do not use extensions" warning. Josh On Jan 15, 2018 9:44 AM, "Dennis C. via CnC-List" wrote: Hope

Re: Stus-List Keel bolt torque

Hopefully, I'm visualizing the situation correctly. The configuration I see is the socket on the nut, an extension of X inches held by a bushing several inches above the socket, then the multiplier on top of the extension. I just don't see a difference for the multiplier if the extension is held

Re: Stus-List Keel bolt torque

That's a pretty good idea Dennis. So I take it that you prefer getting the multiplier out of the hole and using the handle? Josh On Jan 14, 2018 8:16 PM, "Dennis C. via CnC-List" wrote: > Get some PVC pipe, PVC fittings or some wood pieces and make a bushing for > the hole in the sole to stead

Re: Stus-List Keel bolt torque

Get some PVC pipe, PVC fittings or some wood pieces and make a bushing for the hole in the sole to steady the top of the extension and keep it aligned. Torque away! Dennis C. On Sun, Jan 14, 2018 at 6:09 PM, Josh Muckley via CnC-List < cnc-list@cnc-list.com> wrote: > So now I have a new problem

Re: Stus-List Keel bolt torque

So now I have a new problem. Keel bolt #4 is down a deep hole and is constrained to a narrow channel. The immediate thought is to simply use an extension. Problem is that the torque multiplier specifically states to not use an extension... I assume on the output shaft. I also assume that the re

Re: Stus-List Keel bolt torque

It looks like I should have checked my standard nut/bolt sizes. See the attached chart. Josh On Jan 13, 2018 7:54 PM, "Josh Muckley" wrote: The only thing I had close to 1-13/16 was 1-7/8 which seemed to fit the #5 bolt and it was only best measured as a 1-1/4" stud. #1 and #7 match, measu

Re: Stus-List Keel bolt torque

The only thing I had close to 1-13/16 was 1-7/8 which seemed to fit the #5 bolt and it was only best measured as a 1-1/4" stud. #1 and #7 match, measuring 1" and fit 1-1/2 socket. Here's the latest chart (* denotes unchecked) Keel bolts (fwd to aft): Nut stud 1 - 1

Re: Stus-List Keel bolt torque

Hi Josh, So what size was bolt #7 on Sea Hawk? Mine (I think) is actually a 1-13/16" nut, 1-1/8" stud, torqued to 400 lbs. Curious minds... Ken H. On 13 January 2018 at 20:00, Josh Muckley via CnC-List < cnc-list@cnc-list.com> wrote: > So two (#2&4) of the largest bolts fit the 2-3/16ths sock

Re: Stus-List Keel bolt torque

So two (#2&4) of the largest bolts fit the 2-3/16ths socket (tight) and two (#3&6) don't. I remeasured and sure enough the ones I can reach are 56mm and 57mm. Looks like I'll be buying an additional socket... 2-1/4! I should have heeded Ken's advice more closely. What are the chances they used

Re: Stus-List Keel bolt torque

I am the one that created the table on the C&C Photo Album.  It has been so long ago that I don't remember where I got the raw data.  I agree that the 1/2 nut values seem high.  I originally created the table when I bought Corsair in 1996.  One of the survey items was that the keel bolt backing

Re: Stus-List Keel bolt torque

I also use tef-gel to protect against galling however I never have backed off when redoing the torque on my bolts. I always go 10% less on the accepted engineering values. Its been 10 years since I redid my keel, backing plates are 5/16 stainless perhaps this year I will back off bolts and add m

Re: Stus-List Keel bolt torque

Most of us who have been on the list a while are pretty well versed in torquing the keel bolts. In my opinion, it's one of the more technical tasks on our boats. However, there have been a bunch of pearls of wisdom in this thread. Someone mentioned the dry vs lubed adjustment. 10% less for lube

Re: Stus-List Keel bolt torque

Don't think you did. I was just offering some clarification for anyone who might be technically challenged. I be an engineer. It's what I do, er, did. That's what's great about this list, with our combined intellect and experience, we stand a good chance of doing something right. :) Then agai

Re: Stus-List Keel bolt torque

Well, I wish I had known that 9 months ago. I went through considerable gymnastics to get mine even close to the C&C spec pages and now I'm concerned I've overtightened them. I did stop a bit shy of the values, but I noticed that the washers deformed considerably when I tightened them. I did sail m

Re: Stus-List Keel bolt torque

Follow my links and tell me if I'm missing something. I assumed 316 stainless, Course thread, and lubed with tef-gel. Josh On Wed, Jan 3, 2018, 10:44 AM Dennis C. via CnC-List wrote: > Torque specs are affected by, as a minimum, the following: > > Bolt size > Grade of bolt > Material, SS or st

Re: Stus-List Keel bolt torque

Torque specs are affected by, as a minimum, the following: Bolt size Grade of bolt Material, SS or steel Thread pitch Lubed vs dry Make sure you're comparing apples to apples. Dennis C. ___ Thanks everyone for supporting this list with your contributi

Re: Stus-List Keel bolt torque

When I tightened my keel bolts 3 years ago, I also found this discrepancy in torque values and went with the lower numbers rather than the C&C numbers. I figured it would do little harm having them lower than too high and also went with dry as opposed to lubricated. I haven’t checked them since

Re: Stus-List Keel bolt torque

Hi Josh, I tried a number of sources to try to find torque values for the largest bolts, including exchanging a few emails with Mars Keel to no avail. Then I just did some internet research to come up with a torque value I could live with, keeping in mind there was some fibreglass laminate that i

Re: Stus-List Keel bolt torque

Ok so now I'm confused and concerned. Neil Schiller got me thinking about the science and standardization of the torque specs. Wet, dry, tension, yield strength... So I did some investigating. I expected that the specs on the c&c photo album would loosely correlate to those in a standard enginee

Re: Stus-List Keel bolt torque

List Cc: Josh Muckley Subject: Stus-List Keel bolt torque   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

Re: Stus-List Keel bolt torque

-list.com] On Behalf Of Josh Muckley via CnC-List Sent: Tuesday, January 2, 2018 3:18 PM To: C&C List Cc: Josh Muckley Subject: Stus-List Keel bolt torque 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

Re: Stus-List Keel bolt torque

Correct, clean and dry threads. Galling of the threads affects the values as well. An example, extremely critical torque values (also clean and dry) extend to engine head bolts and if studs and nuts are used. Lube of any kind could cause values to change either a little or a lot. Bill Dakin S/V T

Re: Stus-List Keel bolt torque

The torques listed are for clean, dry threads. If you lubricate the threads, reduce the torque by 10%. 1983 C&C 35-3, #028 "Grace" Whitehall, Michigan On 1/2/2018 3:18 PM, Josh Muckley via CnC-List wrote: Ok Guys, Since I have the mast out, this provides the rare opportunity to access ALL of

Re: Stus-List Keel bolt torque

Hi Josh, I've continued to use 600 lbs for the 1.5" bolts as I've re-torqued them occasionally. I've used a 2-1/4" socket for those but the 2-3/16" you listed may be a better fit, I'm not sure. I think bolt #7 is actually a 1-13/16" nut, 1-1/8" stud, torqued to 400 lbs. Perhaps you should doubl

Stus-List Keel bolt torque

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 t

Re: Stus-List Keel bolt torque w/multiplier

I used a multiplier on a transmission bolt and literally twisted it off the truck. The torque it supplies is real, so treat it with respect. > On Sep 23, 2017, at 1:42 PM, ssjohnson via CnC-List > wrote: > > I was seeking a more efficient way to torque the keel bolts and found a > multip

Stus-List Keel bolt torque w/multiplier

I was seeking a more efficient way to torque the keel bolts and found a multiplier on Amazon for $60...I thought it might be worth a try.   It multiies 59:1.  So, for 300 ft lbs that MIGHT men about 5 gr8 lbs.  I did have to purchase some adapting sockets to match it's 1" drive,  but still c