Just slightly lower torque and only if the dry torque was compensated for running torque. I don't know if it was but I can tell you that you can measure it by measuring the torque it takes to spin the nut before it seats dry vs wet--very little indeed!!! This also assumes only the threads were lubed... FL Kev
--- John Laurenson <[EMAIL PROTECTED]> wrote: > Good information on the coefficient of friction, but > I don't see how it > addresses anything; other than if you use the copper > anti-seize and the > torque numbers in the manual are based on non-plated > fasteners you have a > problem. You will probably have the bolt fail in > tension because you are > apply nearly three times the tension load and the > bolt will shear fail. > > The question still is "if the torque numbers in the > manual are based on dry" > is there a reduced torque number you need to use for > lubricated because of > the increased loading on the bolt? > > hawke > > > > On 7/3/02 10:38 AM, "Walt Garcen" > <[EMAIL PROTECTED]> wrote: > > > The best torque wrench in the world doesn't know > anything about coefficients > > of friction or stress vs strain curves. Torque is > torque and the issue here > > isn't whether the tool is accurate within 10%, 1%, > or 0.1%. > > > > -----Original Message----- > > From: GTS-1000 Owners List > [mailto:[EMAIL PROTECTED]]On Behalf > > Of tom &jean > > Sent: Wednesday, July 03, 2002 7:50 AM > > To: [EMAIL PROTECTED] > > Subject: Re: dry vs. wet torque readings ??? > > > > > > Since I use the best torque wrench available ( > made by the German mfg > > Stahlwille) I do not have these > > insignificant problems. > > > > Tom Beasley > > > > > > ----- Original Message ----- > > From: "Henry S. Winokur" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Tuesday, July 02, 2002 10:31 PM > > Subject: Re: dry vs. wet torque readings ??? > > > > > >>> Since dry vs wet can vary greatly, any > structural bolts that would be > >>> torqued under my supervision must be done per > the AISC Calibrated torque > >>> wrench method to verify proper tension. But > since you people are mere > >>> peons, not able to fully appreciate a > Wilhelm-Skidmore bolt tensioner, I > >>> would go off the following rule of thumb torque > formula: > >>> > >>> T=(KDW)/12=foot-pounds > >>> > >>> where T= torque > >>> K=friction factor > >>> D= Nominal bolt diameter in decimal inches > >>> W=clamp load in pounds > >>> K=0.30 for nonplated fasteners, black finish > >>> K=0.20 for electrodeposited zinc coatings > >>> K=0.15-0.18 for oils > >>> K=0.16 for cadmium electrodeposited coatings > >>> K=0.12 for copper anti-seize compound > >>> > >>> Standard practice is to tighten a bolt to 70-75% > of the proof load. > > Proof > >>> load is the point where a bolt will permanently > deform more than 2%. > >>> > >>> Let me know if you need any more schooling. > >> > >> What we need is ENGLISH not ENGINEERING-EZE. > >> > >> Regards, > >> > >> Henry S. Winokur > >> 94 GTS1000, AMA, MRF, > >> Nationally Certified Riding Instructor > >> Columbia, MD Ride for Kids Task Force > >> West Bethesda, MD USA > >> > > __________________________________________________ Do You Yahoo!? Sign up for SBC Yahoo! Dial - First Month Free http://sbc.yahoo.com
