Are you sure you havn't got too many zero's or should they be inch pounds at those values? They seem incredibly high. These are bridge bolt numbers.
At 15:58 12/11/99 , you wrote: >According to the Standard Aircraft Handbook, 4th Edition, the torque for a >5/8-18 Standard, Fine Thread bolt and nut (AN310, AN 315) is >1,100-1,300(ft.lbs.). The 5/8-18 Fine Thread, Shear Nut (AN320, 316, AN23 >thru AN31) is 660-740. >The 5/8-11 Coarse Thread Standard is 700-900, and Coarse Thread Shear is >425-540. The "AN" numbers is the same for coarse and fine thread. > >Rick > > >----- Original Message ----- >From: <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]> >Cc: <[EMAIL PROTECTED]> >Sent: Thursday, November 11, 1999 9:30 PM >Subject: Re: Torque Values for Wing Bolts on Mooney M-10 > > >> Tom, >> >> According to an A&P friend of mine who takes the wings off his plane every >> winter, there are no torque values published by Erco or Alon for these >bolts >> (He didn't mention Mooney. Maybe they published a value.) According to >him >> you use the specs for the size bolt as published in the standard aircraft >> hardware manuals. I THINK (as in - don't bet your life on it!!) that the >> torque for the big 5/8 inch bolts is about 100 ft lbs. Not sure about the >> smaller ones. >> >> I had a discussion about these bolts with a mechanical engineer friend of >> mine, and he explained to me that the strength in the wing attach joint on >> the Coupe comes from the friction developed between the spar attach >fittings >> when the wing bolts are torqued. According to him (and his text books), >the >> wing attach bolts are actually loaded in tension, not in shear. (I would >> have bet money that those bolts were loaded in shear!! Shows what >happens >> when I bet money on something that I really don't know anything about!!) >> >> That's more than you asked, I know. Point is, make sure you get the >correct >> value and torque them properly. They're not supposed to be loose at all. >> You should be able to borrow a handbook from any A&P and look up the >values >> in it. >> >> As always, this info is offered for entertainment purposes only... I'm not >an >> aeronautical engineer and am not offering professional advice. Consult an >> aviation professional. Your mileage may vary. Rates subject to change. >> One size probably won't fit all. Etc... >> >> Wayne DelRossi >> Alon N5618F >> > Regards, Brian Garrett ************************************************************************** **** Manager-Projects & Systems Environmental Systems & Services Pty Ltd e-mail: [EMAIL PROTECTED] 405 Tooronga Rd Ph +61 3 9864 5300 Hawthorn East 3123 Fax +61 3 9822 8028 Australia ************************************************************************** ****
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